Matter in Our Surroundings is the first chapter in the NCERT Class 9 Chemistry textbook. It introduces students to the basic concepts of matter, such as its states, phases, and changes. Students also learn about the different types of matter and their properties.
This blog post provides a comprehensive set of MCQs based on the NCERT Class 9 Chemistry Chapter 1, “Matter in Our Surroundings.” The MCQs cover all the important topics from the chapter, including:
- States of Matter
- Phases of Matter
- Changes in matter
- Types of matter
- Properties of Matter
The MCQs are designed to test students’ understanding of the chapter concepts and to prepare them for competitive exams.
In this blog post, we have prepared a set of multiple-choice questions (MCQs) that will not only test your knowledge but also help you grasp the key concepts covered in this chapter.
Whether you’re a student preparing for exams or someone simply curious about the properties of different states of matter, these MCQs will serve as a valuable resource.
Note: Please leave a comment below if you discover any errors or inaccuracies in the following 65 MCQs on "Matter in Our Surroundings."
So, Get ready to test your knowledge and deepen your understanding of the world of chemistry! We hope you find this guide helpful and informative. Good luck with your studies!
Matter in Our Surroundings Class 9 MCQ With Answers Set-1
Q1: Which of the following is NOT a characteristic of matter?
Answer – C. Energy
Explanation-Energy is not a characteristic of matter. Matter is defined as anything that has mass and occupies space. Energy is a form of work that can be transferred from one object to another, but it does not have mass or occupy space.
Q2: Which of the following is NOT one of the five basic elements of matter according to the ancient Indian philosophers?
Answer – E. Metal
Explanation-The five basic elements of matter according to the ancient Indian philosophers are air, earth, fire, sky, and water. Metal is not one of the five basic elements.
Q3: Which of the following is NOT a type of classification of matter based on its physical properties?
A. State of matter
D. Chemical composition
Answer – D. Chemical composition
Explanation-Chemical composition is a type of classification of matter based on its chemical nature, not its physical properties. The other three options are all types of classification of matter based on its physical properties.
Q4: Which of the following is NOT a property of matter?
Answer – D. Weight
Explanation-Weight is a force, not a property of matter. Mass is a property of matter. The other three options are all properties of matter.
Q5. Which of the following is NOT a factor that affects the rate of diffusion?
B. Concentration gradient
C. Surface area
D. Size of the particles
Answer – C. Surface area
Explanation-Surface area does not affect the rate of diffusion. The other three options are all factors that affect the rate of diffusion.
Q6. Which of the following is an example of diffusion?
A. Smoke from a cigarette rising in the air
B. A drop of food coloring spreading out in a glass of water
C. The smell of coffee wafting through the room
D. All of the above
Answer – D. All of the above
Explanation-Smoke from a cigarette rising in the air, a drop of food coloring spreading out in a glass of water, and the smell of coffee wafting through the room are all examples of diffusion.
Q7. Why does diffusion occur?
A. Because particles of matter are constantly moving
B. Because of the concentration gradient
C. Both A and B
D. None of the above
Answer – C. Both A. and (B)
Explanation-Diffusion occurs because particles of matter are constantly moving and because of the concentration gradient. The concentration gradient is the difference in concentration of a substance between two areas. Particles of matter diffuse from an area of high concentration to an area of low concentration.
Q8. Which of the following is NOT true about diffusion?
A. Diffusion is a physical process.
B. Diffusion is a spontaneous process.
C. Diffusion can be reversed.
D. Diffusion is affected by temperature.
Answer – C. Diffusion can be reversed.
Explanation- Diffusion is a physical process that is irreversible. The other three options are all true about diffusion.
Q9. Which of the following is NOT a property of solids?
A. Definite shape
B. Definite volume
Answer – D. Compressible
Explanation-Solids are not compressible, meaning they cannot be easily squeezed into a smaller space. The other three options are all properties of solids.
Q10. Which of the following is NOT a property of liquids?
A. No definite shape
B. Definite volume
Answer – D. Rigid
Explanation- Liquids are not rigid, meaning they can flow and change shape. The other three options are all properties of liquids.