case study questions for science class 9

myCBSEguide

• Class 9 Science Case...

Class 9 Science Case Study Questions

Table of Contents

myCBSEguide App

Download the app to get CBSE Sample Papers 2023-24, NCERT Solutions (Revised), Most Important Questions, Previous Year Question Bank, Mock Tests, and Detailed Notes.

If you are wondering how to solve class 9 science case study questions, then myCBSEguide is the best platform to choose. With the help of our well-trained and experienced faculty, we provide solved examples and detailed explanations for the recently added Class 9 Science case study questions.

You can find a wide range of solved case studies on myCBSEguide, covering various topics and concepts. Class 9 Science case studies are designed to help you understand the application of various concepts in real-life situations.

The rationale behind Science

Science is crucial for Class 9 students’ cognitive, emotional, and psychomotor development. It encourages curiosity, inventiveness, objectivity, and aesthetic sense.

In the upper primary stage, students should be given a variety of opportunities to engage with scientific processes such as observing, recording observations, drawing, tabulating, plotting graphs, and so on, whereas in the secondary stage, abstraction and quantitative reasoning should take a more prominent role in science teaching and learning. As a result, the concept of atoms and molecules as matter’s building units, as well as Newton’s law of gravitation, emerges.

Science is important because it allows Class 9 Science students to understand the world around us. It helps to find out how things work and to find solutions to problems at the Class 9 Science level. Science is also a source of enjoyment for many people. It can be a hobby, a career, or a source of intellectual stimulation.

Case study questions in Class 9 Science

The inclusion of case study questions in Class 9 science CBSE is a great way to engage students in critical thinking and problem-solving. By working through real-world scenarios, Class 9 Science students will be better prepared to tackle challenges they may face in their future studies and careers. Class 9 Science Case study questions also promote higher-order thinking skills, such as analysis and synthesis. In addition, case study questions can help to foster creativity and innovation in students. As per the recent pattern of the Class 9 Science examination, a few questions based on case studies/passages will be included in the CBSE Class 9 Science Paper. There will be a paragraph presented, followed by questions based on it.

Examples of Class 9 science class case study questions

Class 9 science case study questions have been prepared by myCBSEguide’s qualified teachers. Class 9 case study questions are meant to evaluate students’ knowledge and comprehension of the material. They are not intended to be difficult, but they will require you to think critically about the material. We hope you find Class 9 science case study questions beneficial and that they assist you in your exam preparation.

The following are a few examples of Class 9 science case study questions.

Class 9 science case study question 1

• due to its high compressibility
• large volumes of a gas can be compressed into a small cylinder
• transported easily
• all of these
• shape, volume
• volume, shape
• shape, size
• size, shape
• the presence of dissolved carbon dioxide in water
• the presence of dissolved oxygen in the water
• the presence of dissolved Nitrogen in the water
• liquid particles move freely
• liquid have greater space between each other
• both (a) and (b)
• none of these
• Only gases behave like fluids
• Gases and solids behave like fluids
• Gases and liquids behave like fluids
• Only liquids are fluids

Answer Key:

• (d) all of these
• (a) shape, volume
• (b) the presence of dissolved oxygen in the water
• (c) both (a) and (b)
• (c) Gases and liquids behave like fluids

Class 9 science case study question 2

• 12/32 times
• 18 g of O 2
• 18 g of CO 2
• 18 g of CH 4
• 1 g of CO 2
• 1 g of CH 4 CH 4
• 2 moles of H2O
• 20 moles of water
• 6.022  ×  1023 molecules of water
• 1.2044  ×  1025 molecules of water
• (I) and (IV)
• (II) and (III)
• (II) and (IV)
• Sulphate molecule
• Ozone molecule
• Phosphorus molecule
• Methane molecule
• (c) 8/3 times
• (d) 18g of CH ​​​​​4
• (c) 1g of H ​​​​​​2
• (d) (II) and (IV)
• (c) phosphorus molecule

Class 9 science case study question 3

• collenchyma
• chlorenchyma
• It performs photosynthesis
• It helps the aquatic plant to float
• It provides mechanical support
• Sclerenchyma
• Collenchyma
• Epithelial tissue
• Parenchyma tissues have intercellular spaces.
• Collenchymatous tissues are irregularly thickened at corners.
• Apical and intercalary meristems are permanent tissues.
• Meristematic tissues, in its early stage, lack vacuoles, muscles
• (I) and (II)
• (III) and (I)
• Transpiration
• Provides mechanical support
• Provides strength to the plant parts
• None of these
• (a) Collenchyma
• (b) help aquatic plant to float
• (b) Sclerenchyma
• (d) Only (III)
• (c) provide strength to plant parts

Cracking Class 9 Science Case Study Questions

There is no one definitive answer to Class 9 Science case study questions. Every case study is unique and will necessitate a unique strategy. There are, nevertheless, certain general guidelines to follow while answering case study questions.

• To begin, double-check that you understand the Class 9 science case study questions. Make sure you understand what is being asked by reading it carefully. If you’re unclear, seek clarification from your teacher or tutor.
• It’s critical to read the Class 9 Science case study material thoroughly once you’ve grasped the question. This will provide you with a thorough understanding of the problem as well as the various potential solutions.
• Brainstorming potential solutions with classmates or other students might also be beneficial. This might provide you with multiple viewpoints on the situation and assist you in determining the best solution.
• Finally, make sure your answer is presented simply and concisely. Make sure you clarify your rationale and back up your claim with evidence.

A look at the Class 9 Science Syllabus

The CBSE class 9 science syllabus provides a strong foundation for students who want to pursue a career in science. The topics are chosen in such a way that they build on the concepts learned in the previous classes and provide a strong foundation for further studies in science. The table below lists the topics covered in the Class 9 Science syllabus of the Central Board of Secondary Education (CBSE). As can be seen, the Class 9 science syllabus is divided into three sections: Physics, Chemistry and Biology. Each section contains a number of topics that Class 9 science students must study during the course.

CBSE Class 9 Science (Code No. 086)

Theme: Materials Unit I: Matter-Nature and Behaviour Definition of matter; solid, liquid and gas; characteristics – shape, volume, density; change of state-melting (absorption of heat), freezing, evaporation (cooling by evaporation), condensation, sublimation. Nature of matter:  Elements, compounds and mixtures. Heterogeneous and homogenous mixtures, colloids and suspensions. Particle nature and their basic units:  Atoms and molecules, Law of constant proportions, Atomic and molecular masses. Mole concept: Relationship of mole to mass of the particles and numbers. Structure of atoms:  Electrons, protons and neutrons, valency, the chemical formula of common compounds. Isotopes and Isobars.

Theme: The World of the Living Unit II: Organization in the Living World Cell – Basic Unit of life:  Cell as a basic unit of life; prokaryotic and eukaryotic cells, multicellular organisms; cell membrane and cell wall, cell organelles and cell inclusions; chloroplast, mitochondria, vacuoles, endoplasmic reticulum, Golgi apparatus; nucleus, chromosomes – basic structure, number. Tissues, Organs, Organ System, Organism: Structure and functions of animal and plant tissues (only four types of tissues in animals; Meristematic and Permanent tissues in plants).

Theme: Moving Things, People and Ideas Unit III: Motion, Force and Work Motion:  Distance and displacement, velocity; uniform and non-uniform motion along a straight line; acceleration, distance-time and velocity-time graphs for uniform motion and uniformly accelerated motion, derivation of equations of motion by graphical method; elementary idea of uniform circular motion. Force and Newton’s laws:  Force and Motion, Newton’s Laws of Motion, Action and Reaction forces, Inertia of a body, Inertia and mass, Momentum, Force and Acceleration. Elementary idea of conservation of Momentum. Gravitation:  Gravitation; Universal Law of Gravitation, Force of Gravitation of the earth (gravity), Acceleration due to Gravity; Mass and Weight; Free fall. Floatation:  Thrust and Pressure. Archimedes’ Principle; Buoyancy. Work, energy and power:  Work done by a Force, Energy, power; Kinetic and Potential energy; Law of conservation of energy. Sound:  Nature of sound and its propagation in various media, speed of sound, range of hearing in humans; ultrasound; reflection of sound; echo.

Theme: Food Unit IV: Food Production Plant and animal breeding and selection for quality improvement and management; Use of fertilizers and manures; Protection from pests and diseases; Organic farming.

PRESCRIBED BOOKS:

• Science-Textbook for class IX-NCERT Publication
• Assessment of Practical Skills in Science-Class IX – CBSE Publication
• Laboratory Manual-Science-Class IX, NCERT Publication
• Exemplar Problems Class IX – NCERT Publication

myCBSEguide: A true helper

There are numerous advantages to using myCBSEguide to achieve the highest results in Class 9 Science.

• myCBSEguide offers high-quality study materials that cover all of the topics in the Class 9 Science curriculum.
• myCBSEguide provides practice questions and mock examinations to assist students in the best possible preparation for their exams.
• On our myCBSEguide app, you’ll find a variety of solved Class 9 Science case study questions covering a variety of topics and concepts. These case studies are intended to help you understand how certain principles are applied in real-world settings
• myCBSEguide is that the study material and practice problems are developed by a team of specialists who are always accessible to assist students with any questions they may have. As a result, students may be confident that they will receive the finest possible assistance and support when studying for their exams.

So, if you’re seeking the most effective strategy to study for your Class 9 Science examinations, myCBSEguide is the place to go!

Test Generator

Create question paper PDF and online tests with your own name & logo in minutes.

Question Bank, Mock Tests, Exam Papers, NCERT Solutions, Sample Papers, Notes

Related Posts

• Competency Based Learning in CBSE Schools
• Class 11 Physical Education Case Study Questions
• Class 11 Sociology Case Study Questions
• Class 12 Applied Mathematics Case Study Questions
• Class 11 Applied Mathematics Case Study Questions
• Class 11 Mathematics Case Study Questions
• Class 11 Biology Case Study Questions
• Class 12 Physical Education Case Study Questions

Leave a Comment

Save my name, email, and website in this browser for the next time I comment.

Class 9 Science Case Study Questions Chapter 4 Structure of Atom

• Post author: studyrate
• Post published:
• Post category: class 9th
• Post comments: 0 Comments

Case study Questions on Class 9 Science Chapter 4  are very important to solve for your exam. Class 9 Science Chapter 4 Class 9 Science Case Study Questions have been prepared for the latest exam pattern. You can check your knowledge by solving  case study-based questions for Class 9 Science  Chapter 4 Structure of Atom

Join our Telegram Channel, there you will get various e-books for CBSE 2024 Boards exams for Class 9th, 10th, 11th, and 12th.

In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage-based as well. In that, a paragraph will be given, and then the MCQ questions based on it will be asked.

Structure of Atom Case Study Questions With Answers

Here, we have provided case-based/passage-based questions for Class 9 Science  Chapter 4 Structure of Atom

Case Study/Passage-Based Questions

Case Study 1: The maximum number of electrons that are permitted to be assigned to an energy shell of an atom is called the electron capacity of that shell. The distribution of electrons in different orbits or shells is governed by a scheme known as the Bohr-Bury scheme. According to this scheme : (i) The maximum number of electrons that can be present in any shell is given by the formula 2n2 where n is the number of energy levels. (ii) The maximum number of electrons that can be accommodated in the outermost shell is 8. Electrons are filled in the shells in a stepwise manner in increasing the order of energy of the energy shell.

What is the maximum electron capacity of the N shell? (a) 24 (b) 8 (c) 18 (d) 32

Answer: (d) 32

Identify the element with the configuration K-2, L-8, M-3. (a) Aluminium (b) Magnesium (c) Sodium (d) Beryllium

Answer: (a) Aluminium

Which of the following configuration represent sodium? (a) 2, 8, 4 (b) 2, 8, 5 (c) 2, 3 (d) 2, 8, 1

Answer: (d) 2, 8, 1

Case Study/Passage Based Questions

The given diagrams show the atomic structures of elements X and Y.

Element X and Y could be _ and _ respectively. (a) Be and B (b) C and O (c) F and N (d) C and N

Answer: (d) C and N

Valency of elements X and Y are respectively, (a) 4 and 3 (b) 2 and 5 (c) 1 and 4 (d) 3 and 4

Answer: (a) 4 and 3

Elements X and Y are (a) isotopes (b) isoelectronic (c) isobars (d) isomers.

Answer: (c) isobars

Case Study 2: The mass of an atom is due to the masses of protons and neutrons in the nucleus. The relative masses of protons and neutrons are almost equal to one. Therefore, the atomic mass of an element should be nearly a whole number. But in many cases the atomic masses are fractional. The main reason for these fractional atomic masses is that these elements occur in nature as a mixture of several isotopes. The atomic mass of an element is the average of the atomic masses of these isotopes in the ratio of their proportion of occurrence.

Chlorine occurs in nature in the form of two isotopes with atomic masses 35 u and 37 u in the ratio of 3 : 1 respectively. The atomic mass of chlorine is (a) 35.5 u (b) 34.5 u (c) 35 u (d) 36 u

Answer: (a) 35.5 u

An element occurs in two isotopic forms with atomic masses 10 and 11. What is the percentage abundance of two isotopes in the sample having an atomic mass of 10.80? (a) 20, 80 (b) 50, 50 (c) 25, 70 (d) 60, 40

Answer: (a) 20, 80

The fractional atomic masses of elements are due to the existence of (a) isotopes having different masses (b) diagonal relationship (c) equal number of electrons and protons (d) none of these.

Answer: (a) isotopes having different masses

Case Study 3: The structure of an atom consists of subatomic particles, mainly protons, neutrons, and electrons. Protons and neutrons are located in the nucleus, which is the central region of an atom. Protons carry a positive charge, while neutrons are electrically neutral. Electrons, on the other hand, are negatively charged particles that orbit around the nucleus in energy levels or shells. The number of protons in an atom determines its atomic number, which is unique to each element. The mass number of an atom is the sum of its protons and neutrons. The atomic mass of an element is the weighted average mass of all its naturally occurring isotopes. Isotopes are atoms of the same element that have different numbers of neutrons. The arrangement and distribution of these subatomic particles determine the overall stability and properties of an atom.

Which subatomic particles are mainly located in the nucleus of an atom? a) Protons and electrons b) Neutrons and electrons c) Protons and neutrons d) Protons, neutrons, and electrons Answer: c) Protons and neutrons

What is the charge of protons? a) Positive b) Negative c) Neutral d) Variable Answer: a) Positive

Where are electrons located in an atom? a) Nucleus b) Energy levels or shells c) Protons d) Neutrons Answer: b) Energy levels or shells

What determines the atomic number of an atom? a) Number of electrons b) Number of protons c) Number of neutrons d) Sum of protons and neutrons Answer: b) Number of protons

What are atoms of the same element with different numbers of neutrons called? a) Isotopes b) Ions c) Elements d) Electrons Answer: a) Isotopes

Hope the information shed above regarding Case Study and Passage Based Questions for Class 9 Science Chapter 4 Structure of Atom with Answers Pdf free download has been useful to an extent. If you have any other queries about CBSE Class 9 Science Structure of Atom Case Study and Passage Based Questions with Answers, feel free to comment below so that we can revert back to us at the earliest possible By Team Study Rate

You Might Also Like

Mcq class 9 social science geography physical features of india quiz with answers, mcq questions of class 9 maths chapter 13 surface areas and volumes with answers, class 9 social science case study questions pdf download, leave a reply cancel reply.

Save my name, email, and website in this browser for the next time I comment.

CBSE Expert

Case Study Questions of Chapter 2 Is Matter Around Us Pure? PDF Download

Case study Questions on Class 9 Science Chapter 2 are very important to solve for your exam. Class 9 Science Chapter 2 Case Study Questions have been prepared for the latest exam pattern. You can check your knowledge by solving case study-based questions for Class 9 Science Chapter 2 Is Matter Around Us Pure?

In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage-based as well. In that, a paragraph will be given, and then the MCQ questions based on it will be asked.

Is Matter Around Us Pure? Case Study Questions With answers

Here, we have provided case-based/passage-based questions for Class 9 Science  Chapter 2 Is Matter Around Us Pure?

Case Study/Passage-Based Questions

Question 1:

Akshita wants to separate the mixture of dyes constituting a sample of ink. She marked a line by the ink on the filter paper and placed the filter paper in a glass containing water as shown in the figure. The filter paper was removed when the water moved near the top of the filter paper.

(i) Identify the technique used by the Akshita. (a) Sedimentation (b) Filtration (c) Chromatography (d) Distillation

Answer: (c) Chromatography.

(ii) What would you expect to see, if the ink contains three different coloured components? (a) We will not see any band on the filter paper. (b) We would see three bands on the filter paper at various lengths. (c) We would see infinite bands on the filter paper. (d) We would see the single band on the filter paper.

Answer: (b) The components of the ink will travel with water and we would see three bands on the filter paper at various lengths.

(iii) An application where you can use this technique is: (a) To separate salt from sand (b) To separate the wheat from the husk (c) To separate oil from water (d) To separate drugs from the blood.

Answer: (d) To separate drugs from blood.

(iv) The above process is used for the separation of : (a) insoluble substances (b) single solute that dissolves in the soluble solvent. (c) solutes that dissolve in the same solvent. (d) solutes that dissolve in the different solvents.

Answer: (c) For the separation of those solutes that dissolve in the same solvent.

(v) What is chromatography? (a) It is an agricultural method to separate grains (b) A method to separate magnetic impurities from non-magnetic impurities

(c) The process of separating the suspended particles of an insoluble substance (d) Method of separating and identifying various components in a mixture, which are present in small trace quantities.

Answer: (d) Method of separating and identifying various components in a mixture, which are present in small trace quantities.

Question 2:

A homogeneous mixture of two or more substances is called a true solution. it consists of solute and solvent. The particle size of the true solution is less than 1 nanometer. A suspension is a heterogeneous mixture in which the solute particle does not dissolve but remains suspended throughout the bulk of the medium. A colloid is a mixture that is actually heterogeneous but appears to be homogeneous as the particles are uniformly spread throughout the solution.

(i) which one of the following is most stable? 

A)True solution

B)Suspensions

D) both A and B

Answer: A)True solution

ii) which type of mixture can be separated by filtration? 

D)All of these

Answer: B)Suspensions

iii) which statement is incorrect about the Tyndall effect. *

A)True solution shows Tyndall effect

B)Suspensions show the Tyndall effect

C)Colloid show Tyndall effect

D)Both B and C show the Tyndall effect

Answer: A)True solution shows Tyndall effect

iv) Which is the correct order of stability of solution *

A) True < Colloid<Suspension

B)Colloid<Suspension<True

C)Colloid<True<Suspension

D)Suspension<Colloid<True

Answer: D)Suspension

Hope the information shed above regarding Case Study and Passage Based Questions for Class 9 Science Chapter 2 Is Matter Around Us Pure? with Answers Pdf free download has been useful to an extent. If you have any other queries about CBSE Class 9 Science Is Matter Around Us Pure? Case Study and Passage Based Questions with Answers, feel free to comment below so that we can revert back to us at the earliest possible

Leave a Comment Cancel reply

Save my name, email, and website in this browser for the next time I comment.

Download India's best Exam Preparation App Now.

Key Features

• Revision Notes
• Important Questions
• Previous Years Questions
• Case-Based Questions
• Assertion and Reason Questions

No thanks, I’m not interested!

• Polynomials Class 9 Case Study Questions Maths Chapter 2

Last Updated on August 9, 2024 by XAM CONTENT

Hello students, we are providing case study questions for class 9 maths. Case study questions are the new question format that is introduced in CBSE board. The resources for case study questions are very less. So, to help students we have created chapterwise case study questions for class 9 maths. In this article, you will find case study questions for CBSE Class 9 Maths Chapter 2 Polynomials. It is a part of Case Study Questions for CBSE Class 9 Maths Series.

Table of Contents

Case Study Questions on Polynomials

In the current scenario, people use such door whose top half part is made of glass and bottom half part is wooden.

The glass portion of the door is having length and width in the ratio of 5 : 3. The wooden frame around the glass portion adds 11 inches to the total width and 14 inches to the total length. Consider the length of the glass portion as 5 x  inches:

On the basis of the above information, solve the following questions:

Q. 1. Find the total length of the glass portion of the door (in inches) is represented in terms of x .

Q. 2. Find the total width of the glass portion of the door (in inches).

Q. 3. Write the polynomial representation of the area top half part of the door.

Q. 4. Find the zeroes of the polynomial representing the area.

1. The total length of the glass portion in the door is represented by $(5 x+14)$ inches. 2. The total width of the glass portion in the door is $(3 x+11)$ inches. 3. The area of top half part of the door $$ \begin{aligned} & =\text { length } \times \text { width } \\ & =(5 x+14)(3 x+11) \\ =& 15 x^2+55 x+42 x+154 \\ & =15 x^2+97 x+154 \end{aligned} $$ 4. We have area, $p(x)=(5 x+14)(3 x+11)$ For finding zeroes, put $p(x)=0$ \begin{array}{ll} \therefore(5 x+14) (3 x+11)=0 \\ \Rightarrow (5 x+14)=0 \text { or }(3 x+11)=0 \\ \Rightarrow x=\frac{-14}{5} \text { or } x=\frac{-11}{3} \end{array}

Algebraic Identities

Algebraic equations that are true for all values of variables occurring in it. Some useful algebraic identities are:

(i) $(x+y)^2=x^2+2 x y+y^2$ (ii) $(x-y)^2=x^2-2 x y+y^2$ (iii) $x^2-y^2=(x+y)(x-y)$ (iv) $(x+a)(x+b)=x^2+(a+b) x+a b$ (v) $(x+y+z)^2$ =$x^2+y^2+z^2+2 x y+2 y z+2 z x$ (vi) $(x+y)^3$ =$x^3+y^3+3 x y(x+y)$ =$x^3+y^3+3 x^2 y+3 x y^2$ (vii) $(x-y)^3$ =$x^3-y^3-3 x y(x-y)$ =$x^3-y^3-3 x^2 y+3 x y^2$ (viii) $x^3+y^3$ =$(x+y)\left(x^2-x y+y^2\right)$ =$(x+y)^3-3 x y(x+y)$ (ix) $x^3-y^3$ =$(x-y)\left(x^2+x y+y^2\right)$ =$(x-y)^3+3 x y(x-y)$ (x) $\left(x^3+y^3+z^3-3 x y z\right)$ $=\left(x+y+z)(x^2+y^2+z^2-x y-y z-z x\right)$ Note: If $x+y+z=0$, then $x^3+y^3+z^3=3 x y z$

Coordinate Geometry Class 9 Case Study Questions Maths Chapter 3

Number systems class 9 case study questions maths chapter 1, topics from which case study questions may be asked.

• Definition of a polynomial in one variable, with examples and counter examples.
• Coefficients of a polynomial
• Terms of a polynomial and zero polynomial.
• Degree of a polynomial.
• Constant, linear, quadratic and cubic polynomials.
• Monomials, binomials, trinomials.
• Factors and multiples.
• Zeros of a polynomial.
• Remainder Theorem with examples.

Linear polynomial can be monomial or binomial. Quadratic polynomial can be monomial, binomial or trinomial. The degree of a zero polynomial is not defined.

Case study questions from the above given topic may be asked.

Download Customised White Label Study Materials in MS Word Format

We are providing teaching resources to teachers and coaching institute looking for customised study materials in MS word format. Our High-quality editable study material which is prepared by the expert faculties are Highly useful for Teachers, Mentors, Tutors, Faculties, Coaching Institutes, Coaching Experts, Tuition Centers.

Frequently Asked Questions (FAQs) on Polynomials Case Study

Q1: what are polynomials in mathematics.

A1: Polynomials are algebraic expressions that consist of variables and coefficients, connected by addition, subtraction, and multiplication. They can have multiple terms, and the degree of a polynomial is determined by the highest power of the variable in the expression.

Q2: H ow many types of polynomials are there?

A2: Polynomials are classified based on the number of terms they have: Monomial: A polynomial with just one term. Binomial: A polynomial with two terms. Trinomial: A polynomial with three terms Multinomial: A polynomial with more than three terms

Q3: What is the degree of a polynomial?

A3: The degree of a polynomial is the highest power of the variable in the polynomial.

Q4: What are the key concepts covered in Chapter 1 of CBSE Class 9 Maths regarding polynomials?

A4: Chapter 2 of CBSE Class 9 Maths covers concepts such as understanding polynomials and its types. (i) Types of polynomials (ii) Terms and coefficient of polynomials (iii) Zeroes of a polynomial (iv) Division algorithm (v) Remainder theorem (vi) Factor theorem (vii) Factorisation of quadratic polynomial

Q5: What is the difference between a polynomial and a non-polynomial expression?

A5: A polynomial expression consists of variables with non-negative integer exponents and real coefficients, combined using addition, subtraction, and multiplication. Non-polynomial expressions may include variables with negative exponents, fractional exponents, or other operations like division by variables or roots

Q6: What are the common mistakes to avoid when working with polynomials?

A6: Common mistakes include: Misidentifying the degree of the polynomial. Incorrectly applying the distributive property when multiplying polynomials. Forgetting to arrange the polynomial terms in standard form (descending order of exponents). Overlooking the signs while combining like terms. Misapplying the rules of exponents.

Q7: Are there any online resources or tools available for practicing polynomials case study questions?

A7: We provide case study questions for CBSE Class 9 Maths on our website. Students can visit the website and practice sufficient case study questions and prepare for their exams. If you need more case study questions, then you can visit Physics Gurukul website. they are having a large collection of case study questions for all classes.

Q8: What are the important keywords for CBSE Class 9 Maths Polynomials?

A8: List of important keywords given below – Algebraic Expression: Any expression that contains constants and variables, connected by some or all of the operations +, -, x, ÷. Polynomials: An algebraic expression in which the variables involved have only non-negative integral powers. Polynomials in one Variable: An algebraic expression which consist of only one type of variables in the entire expression. Degree of Polynomial: Highest power of a variable in the polynomial. Constant Polynomial: Polynomial of zero degree. Zero Polynomials: A polynomial consisting of one term, namely zero. Zeroes of a Polynomial: Let p(x) be a polynomial in one variable and ‘a’ be a real number such that the value of polynomial at x=a is zero i.e., p(a) = 0, then ‘a’ is said to be a zero polynomial of p(x). Remainder Theorem: Let p(x) be a polynomial having degree 1 or more than 1 and let ‘a’ be any real number. If p(x) is divided by (x-a), then remainder is p(a).

Related Posts

• CBSE Class 9

CBSE Class 9 Science Deleted Syllabus for 2025 Exams: Check Full Details Here

Cbse class 9 science deleted syllabus 2025: this article gives insights into the topics from cbse class 9 science syllabus that are not required for the 2025 examinations. students also check the ncert deleted syllabus for class 9 science. .

  CBSE Class 9 Science Deleted Syllabus 2025: The Central Board of Secondary Education (CBSE) is a national level education board. The Board had revised its syllabus for various subjects after the pandemic. This was done to decrease the curriculum load on students. In this article we have provided the deleted syllabus for Class 9 Science that has been removed by the Board. 

CBSE Class 9 Science Deleted Syllabus 

  NCERT Deleted Syllabus Class 9 Science 

CBSE Class 9 students can also check and download the revised  syllabus of Science from the direct link given below. 

Tips To Prepare for CBSE Class 9 Science Examination

1. Check the syllabus thoroughly so that you can avoid preparing for the dropped topics. Next you should create a study plan and allot sufficient time for all the chapters. Don’t be biased towards chapters that you like. 

2. As you study, prepare chapter wise notes which will also help you at the time of revision. The notes can contain definitions of important terms, essential pointers, formulae etc. 

3. Before jumping to other books, finish the NCERT Class 9 Science textbook. NCERT Books help students to gain an understanding of concepts and strengthen their basics. These books are recommended due to their explanation of even difficult topics in simple and clear language. 

4. Solve the questions given at the end of the chapters in the textbook. Questions given in the NCERT books are always considered very important as not only do they help you to analyse your understanding of the concepts involved in a chapter but also in preparing for the examinations. 

5. Practice writing the answers as much as you can to improve your efficiency in writing. Write in a clear and presentable manner which will help you in the examination as well. 

6.S olve the previous year question papers. This will help you to learn how to manage time in the main examination and familiarize you with the common questions asked every year. 

CBSE Video Courses for All Subjects for Class 9 Students

Class 9 students can study effectively with the help of video courses prepared by the subject matter experts. These video courses will explain the concepts in a simple and interactive manner which will help learners to understand clearly. The videos are available for all major subjects.

Click on the below link:

CBSE Class 9 Video Courses 

Also, check

CBSE Class 9 Syllabus 2024-2025: Download Subject-Wise Syllabus PDFs Here

NCERT Books for Class 9 (Latest Edition)

Get here latest School , CBSE and Govt Jobs notification and articles in English and Hindi for Sarkari Naukari , Sarkari Result and Exam Preparation . Download the Jagran Josh Sarkari Naukri App .

• SSC MTS Exam Date 2024
• UGC NET Admit Card 2024
• Har Ghar Tiranga Campaign UPSC
• UGC NET City Intimation Slip 2024
• UP Police Constable Mock Test
• Independence Day Poems
• Independence Day Speech in Hindi
• Independence Day Drawing
• Independence Day Speech
• India Post GDS Cut Off

Latest Education News

Independence Day 2024 Modi’s Special Guests: लाल किले पर आमंत्रित विशेष मेहमानों की सूची यहां देखें

Picture Puzzle IQ Test: Find the mistake in the picture in 5 seconds!

Independence Day 2024: भारत की आजादी के लिए 1885 से 1947 तक की टाइमलाइन, कब क्या हुआ, जानें

Visual Skill Test: Find the odd blueberry in 3 seconds!

SBI का ATM लगवाने के नियम, प्रक्रिया और जरुरी डाक्यूमेंट्स के बारें में जानें यहां

Har Ghar Tiranga Campaign 2024: Key Details, Objectives, Significance, Date for UPSC Exam

Allahabad High Court Recruitment 2024 for Research Officer Posts, Apply Online

TS DSC Answer Key 2024 Out at tsdsc.aptonline.in: Download Teacher Response Sheet, Submit Objection

Brain Teaser: Think You Have a High IQ? Try Finding the 6 Hidden Words in 17 Seconds

IBPS Clerk Prelims Admit Card 2024 OUT at ibps.in: Download CRP Clerk IV Call Letter Here

Bastar University Result 2024 OUT at smkvbastar.ac.in, Direct Link to Download UG and PG Marksheet

SGBAU Result 2024 OUT at sgbau.ucanapply.com, Direct Link to Download UG and PG Marksheet

भारत में किन लोगों को है गाड़ी पर तिरंगा लगाने की अनुमति, जानें

IBPS Clerk Admit Card 2024 Released: Check Direct Download Link at ibps.in

Find 3 differences between the cleaning lady pictures in 12 seconds!

UP Police Constable Exam City Slip, Admit Card 2024: यूपी पुलिस एग्जाम सिटी जल्द होने वाली है जारी, यहाँ से करें Download

SDM Full Form: Sub-Divisional Magistrate Functions, Role, Responsibility

Independence Day 2024 Quiz: Do you know these basic questions about India?

What Leads to the Formation of the Northern Aurora Lights? When will they be visible?

India's Journey to Becoming a Space Power Since Independence

Case Study Based Questions: Light | Science Class 8 PDF Download

Case Study  

The retina of our eye is the back part of the eye. It contains certain special types of cells called photoreceptors. The photoreceptors are of two types - rod cells and cone cells. Rod cells are very sensitive to light changes, shape and movement. In dim light, we see with the help of rod cells. Thus, rod cells are almost entirely responsible for night vision. Nocturnal animals like bats, galago, etc. have their retina packed with rod cells. Hence, they can see in dark. There are about 120 million rod cells in our eyes. The cone cells are not as sensitive to light as the rod cells. They are most sensitive to one of the three different colours, i.e. red, green or blue. Signals from the cone cells are sent to the brain which then translate these messages into the perception of colour. Cone cells work only in bright light. That is why we cannot see different colour in dark. Human eye has about 6 million cone cells in its retina.

Q1: Which of the following cells is sensitive to colour? (a) Rod cells (b) Cone cells (c) Both of these (d) None of these Ans: (b) Sol: Cone cells in the retina are responsible for colour vision. They function in bright light and enable us to perceive different colours.

Q2: Which of the following statement is false? (a) Our retina contains photoreceptor cells (b) Nocturnal animals have more number of rod cells (c) Cone cells are colour sensitive (d) Only cone cells are photoreceptor cells Ans: (d) Sol: The statement is false because both rod cells and cone cells are photoreceptor cells. Rod cells are sensitive to light and are more numerous in nocturnal animals, while cone cells are responsible for colour vision.

Q3: We cannot see different colours in dark because (a) Rod cells do not work in dark (b) Rod cells and cone cells work only in light (c) Cone cells work only in bright light (d) All of these Ans: (c) Sol: Cone cells, which are responsible for detecting colour, require bright light to function. In the dark, rod cells are active but do not detect colour.

Q4: The amount of light entering the eye is controlled by (a) Eye-lens (b) Cornea (c) Iris (d) Ciliary muscle Ans: (c) Sol: The iris controls the size of the pupil and, consequently, the amount of light that enters the eye. It adjusts the pupil size in response to different lighting conditions.

Q5: A person gets out in the sunlight from a dark room. How does his pupil regulate and control the light entering the eye? (a) The size of the pupil will decrease, and less light will enter the eye (b) The size of the pupil will decrease, and more light will enter the eye (c) The size of the pupil will remain the same, but more light will enter the eye (d) The size of the pupil will remain the same, but less light will enter the eye Ans: (a) Sol: When transitioning from a dark room to bright sunlight, the pupil constricts (decreases in size) to limit the amount of light entering the eye and protect the retina from excessive brightness.

Top Courses for Class 8

mock tests for examination

Important questions, practice quizzes, case study based questions: light | science class 8, video lectures, semester notes, sample paper, extra questions, previous year questions with solutions, shortcuts and tricks, study material, viva questions, objective type questions, past year papers.

Case Study Based Questions: Light Free PDF Download

Importance of case study based questions: light, case study based questions: light notes, case study based questions: light class 8, study case study based questions: light on the app.

Welcome Back

Create your account for free.

Forgot Password

Unattempted tests, change country, practice & revise.

Gurukul of Excellence

Classes for Physics, Chemistry and Mathematics by IITians

Join our Telegram Channel for Free PDF Download

Case Study and Passage Based Questions for Class 9 Science Chapter 2 Is Matter Around Us Pure?

• Last modified on: 2 years ago
• Reading Time: 4 Minutes

Case Study Questions:

Question 1:

Akshita wants to separate the mixture of dyes constituting a sample of ink. She marked a line by the ink on the filter paper and placed the filter paper in a glass containing water as shown in figure. The filter paper was removed when the water moved near the top of the filter paper.

(i) Identify the technique used by the Akshita. (a) Sedimentation (b) Filtration (c) Chromatography (d) Distillation

(ii) What would you expect to see, if the ink contains three different coloured components? (a) We will not see any band on the filter paper. (b) We would see three bands on the filter paper at various lengths. (c) We would see infinite bands on the filter paper. (d) We would see single band on the filter paper.

(iii) An application where you can use this technique is: (a) To separate salt from sand (b) To separate wheat from husk (c) To separate oil from water (d) To separate drugs from blood.

(iv) The above process is used for the separation of : (a) insoluble substances (b) single solute that dissolves in soluble solvent. (c) solutes that dissolve in the same solvent. (d) solutes that dissolve in the different solvents.

(v) What is chromatography ? (a) It is an agricultural method to separate grains (b) A method to separate magnetic impurities from non-magnetic impurities (c) The process of separating the suspended particles of an insoluble substance (d) Method of separating and identifying various components in a mixture, which are present in small trace quantities.

You may also like:

Case Study and Passage Based Questions for Class 9 Science Chapter 3 Atoms and Molecules

Last modified on:3 years agoReading Time:5MinutesCase Study Questions for Class 9 Science Chapter 3 Atoms and Molecules In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage based as well. In that, a paragraph will be given, and then…

Case Study and Passage Based Questions for Class 9 Science Chapter 4 Structure of Atom

Last modified on:3 years agoReading Time:4MinutesCase Study Questions for Class 9 Science Chapter 4 Structure of Atom In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage based as well. In that, a paragraph will be given, and then…

Case Study and Passage Based Questions for Class 9 Science Chapter 10 Gravitation

Last modified on:3 years agoReading Time:4MinutesCase Study Questions for Class 9 Science Chapter 10 Gravitation In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage based as well. In that, a paragraph will be given, and then questions based…

Case Study and Passage Based Questions for Class 9 Science Chapter 11 Work and Energy

Last modified on:3 years agoReading Time:4MinutesCase Study Questions for Class 9 Science Chapter 11 Work and Energy In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage based as well. In that, a paragraph will be given, and then…

Case Study and Passage Based Questions for Class 9 Science Chapter 13 Why Do We Fall Ill

Last modified on:3 years agoReading Time:4MinutesCase Study Questions for Class 9 Science Chapter 13 Why Do We Fall Ill In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage based as well. In that, a paragraph will be given,…

Download CBSE Books

Exam Special Series:

• Sample Question Paper for CBSE Class 10 Science (for 2024)
• Sample Question Paper for CBSE Class 10 Maths (for 2024)
• CBSE Most Repeated Questions for Class 10 Science Board Exams
• CBSE Important Diagram Based Questions Class 10 Physics Board Exams
• CBSE Important Numericals Class 10 Physics Board Exams
• CBSE Practical Based Questions for Class 10 Science Board Exams
• CBSE Important “Differentiate Between” Based Questions Class 10 Social Science
• Sample Question Papers for CBSE Class 12 Physics (for 2024)
• Sample Question Papers for CBSE Class 12 Chemistry (for 2024)
• Sample Question Papers for CBSE Class 12 Maths (for 2024)
• Sample Question Papers for CBSE Class 12 Biology (for 2024)
• CBSE Important Diagrams & Graphs Asked in Board Exams Class 12 Physics
• Master Organic Conversions CBSE Class 12 Chemistry Board Exams
• CBSE Important Numericals Class 12 Physics Board Exams
• CBSE Important Definitions Class 12 Physics Board Exams
• CBSE Important Laws & Principles Class 12 Physics Board Exams
• 10 Years CBSE Class 12 Chemistry Previous Year-Wise Solved Papers (2023-2024)
• 10 Years CBSE Class 12 Physics Previous Year-Wise Solved Papers (2023-2024)
• 10 Years CBSE Class 12 Maths Previous Year-Wise Solved Papers (2023-2024)
• 10 Years CBSE Class 12 Biology Previous Year-Wise Solved Papers (2023-2024)
• ICSE Important Numericals Class 10 Physics BOARD Exams (215 Numericals)
• ICSE Important Figure Based Questions Class 10 Physics BOARD Exams (230 Questions)
• ICSE Mole Concept and Stoichiometry Numericals Class 10 Chemistry (65 Numericals)
• ICSE Reasoning Based Questions Class 10 Chemistry BOARD Exams (150 Qs)
• ICSE Important Functions and Locations Based Questions Class 10 Biology
• ICSE Reasoning Based Questions Class 10 Biology BOARD Exams (100 Qs)

✨ Join our Online NEET Test Series for 499/- Only for 1 Year

1 thought on “ Case Study and Passage Based Questions for Class 9 Science Chapter 2 Is Matter Around Us Pure? ”

• Pingback: Is Matter Around Us Pure Class 9 Case Study Questions Science Chapter 2 - XAM CONTENT

Leave a Reply Cancel reply

Editable Study Materials for Your Institute - CBSE, ICSE, State Boards (Maharashtra & Karnataka), JEE, NEET, FOUNDATION, OLYMPIADS, PPTs

Discover more from Gurukul of Excellence

Subscribe now to keep reading and get access to the full archive.

Type your email…

Continue reading