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1. Matter in Our Surroundings-Additional -Questions 2 Science Class 9 In English
Last Updated : 06 March 2026
Explore science Solutions for Class 9 Chapter 1. Matter in Our Surroundings Topic Additional -Questions 2 in English medium.
1. Matter in Our Surroundings-Additional -Questions 2 Science Class 9 In English
Last Updated : 06 March 2026
1. Matter in Our Surroundings-Additional -Questions 2 Science Class 9 In English
1. Matter in Our Surroundings
Additional -Questions 2
Questions-Answers (page 6) NCERT BOOK
Q1. The mass per unit volume of a substance is called density.
(density = mass/volume).
Arrange the following in order of increasing density –
air, exhaust from chimneys, honey, water, chalk, cotton and iron.
Q2. (a) Tabulate the differences in the characterisitcs of states of matter.
(b) Comment upon the following: rigidity, compressibility, fluidity, filling a gas container, shape, kinetic energy and density.
Q3. Give reasons
(a) A gas fills completely the vessel in which it is kept.
(b) A gas exerts pressure on the walls of the container.
(c) A wooden table should be called a solid.
(d) We can easily move our hand in air but to do the same through a solid block of wood we need a karate expert.
Q4. Liquids generally have lower density as compared to solids. But you must have observed that ice floats on water. Find out why?
Questions-Answers (page 9) NCERT BOOK
Q1. Convert the following temperature to celsius scale:
a. 300 K b. 573 K.
Q2. What is the physical state of water at:
a. 250ºC b. 100ºC
Q3. For any substance, why does the temperature remain constant during the change of state?
Q4. Suggest a method to liquefy atmospheric gases.
Questions-Answers (page 10) NCERT BOOK
Q1. Why does a desert cooler cool better on a hot dry day?
Q2. How does the water kept in an earthen pot (matka) become cool during summer?
Q3. Why does our palm feel cold when we put some acetone or petrol or perfume on it?
Q4. Why are we able to sip hot tea or milk faster from a saucer rather than a cup?
Q5. What type of clothes should we wear in summer?
Exercise:
Q1. Convert the following temperatures to the Celsius scale.
(a) 300 K (b) 573 K.
Q2. Convert the following temperatures to the Kelvin scale.
(a) 25°C (b) 373°C.
Q3. Give reason for the following observations.
(a) Naphthalene balls disappear with time without leaving any solid.
(b) We can get the smell of perfume sitting several metres away.
Q4. Arrange the following substances in increasing order of forces of attraction between the particles— water, sugar, oxygen.
Q5. What is the physical state of water at—
(a) 25°C (b) 0°C (c) 100°C ?
Q6. Give two reasons to justify—
(a) water at room temperature is a liquid.
(b) an iron almirah is a solid at room temperature.
Q7. Why is ice at 273 K more effective in cooling than water at the same temperature?
Q8. What produces more severe burns, boiling water or steam?
Q9. Name A,B,C,D,E and F in the following diagram showing change in its state
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NCERT Solutions for Class 9 science Chapter 1. Matter in Our Surroundings Topic Additional -Questions 2
NCERT Solutions for Class 9 science Chapter 1. Matter in Our Surroundings Topic Additional -Questions 2 are prepared to help students understand important concepts of the chapter in a simple and clear manner. These solutions are based on the latest CBSE syllabus and follow the official NCERT textbooks. Students who are searching for accurate answers and step-by-step explanations can use these solutions to improve their learning and prepare better for school exams as well as board examinations.
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About Chapter 1. Matter in Our Surroundings of Class 9 science
Chapter 1. Matter in Our Surroundings is an important part of the Class 9 science syllabus. This chapter explains several key concepts which are essential for understanding the subject in detail. Students often face difficulties while solving textbook questions related to this chapter. That is why NCERT Solutions for Chapter 1. Matter in Our Surroundings are provided to explain every concept in a simple and structured way.
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Conclusion
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1. Matter in Our Surroundings-Additional -Questions 2 Science Class 9 In English
Hindi Medium Students/Teachers/Tutors:
All Chapters science Class 9
Class Wise NCERT Solutions
Students can find NCERT Solutions for Class 6, Class 7, Class 8, Class 9, Class 10, Class 11, and Class 12 on this page. Each class includes detailed solutions for important subjects such as Science, Mathematics, Social Science, English, and Hindi. These solutions are carefully prepared to ensure accuracy and clarity.
- NCERT Solutions for Classes 6 to 8 – Ideal for building strong basic concepts.
- NCERT Solutions for Classes 9 and 10 – Helpful for board exam preparation.
- NCERT Solutions for Classes 11 and 12 – Important for advanced concepts and competitive exams.
1. Matter in Our Surroundings-Additional -Questions 2 Science Class 9 In English Study Materials For Class 6 to 12
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