Study Materials: ncert solutions

Our ncert solutions for Solutions 1. Matter in Our Surroundings - Additional -Questions 2 | Class 9 Science - Toppers Study is the best material for English Medium students cbse board and other state boards students.

Solutions ⇒ Class 9th ⇒ Science ⇒ 1. Matter in Our Surroundings

# Solutions 1. Matter in Our Surroundings - Additional -Questions 2 | Class 9 Science - Toppers Study

Topper Study classes prepares ncert solutions on practical base problems and comes out with the best result that helps the students and teachers as well as tutors and so many ecademic coaching classes that they need in practical life. Our ncert solutions for Solutions 1. Matter in Our Surroundings - Additional -Questions 2 | Class 9 Science - Toppers Study is the best material for English Medium students cbse board and other state boards students.

## Solutions 1. Matter in Our Surroundings - Additional -Questions 2 | Class 9 Science - Toppers Study

CBSE board students who preparing for class 9 ncert solutions maths and Science solved exercise chapter 1. Matter in Our Surroundings available and this helps in upcoming exams 2023-2024.

### You can Find Science solution Class 9 Chapter 1. Matter in Our Surroundings

• All Chapter review quick revision notes for chapter 1. Matter in Our Surroundings Class 9
• NCERT Solutions And Textual questions Answers Class 9 Science
• Extra NCERT Book questions Answers Class 9 Science
• Importatnt key points with additional Assignment and questions bank solved.

Chapter 1 Science class 9

### Additional -Questions 2 class 9 Science Chapter 1. Matter in Our Surroundings

• Solutions 1. Matter In Our Surroundings - Additional -Questions 2 | Class 9 Science - Toppers Study
• Class 9 Ncert Solutions
• Solution Chapter 1. Matter In Our Surroundings Class 9
• Solutions Class 9
• Chapter 1. Matter In Our Surroundings Additional -Questions 2 Class 9

## Solutions 1. Matter in Our Surroundings - Additional -Questions 2 | Class 9 Science - Toppers Study

### 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

##### Other Pages of this Chapter: 1. Matter in Our Surroundings

Important Study materials for classes 06, 07, 08,09,10, 11 and 12. Like CBSE Notes, Notes for Science, Notes for maths, Notes for Social Science, Notes for Accountancy, Notes for Economics, Notes for political Science, Noes for History, Notes For Bussiness Study, Physical Educations, Sample Papers, Test Papers, Mock Test Papers, Support Materials and Books.

Mathematics Class - 11th

NCERT Maths book for CBSE Students.

books

## Study Materials List:

##### Solutions ⇒ Class 9th ⇒ Science
1. Matter in Our Surroundings
2. Is Matter around us Pure
3. Atoms and Molecules
4. Structure of The Atom
5. The Fundamental Unit of Life
6. Tissues
7. Diversity in Living Organisms
8. Motion
9. Force and Laws of Motion
10. Gravitation
11. Work and Energy
12. Sound
13. Why Do We Fall ill
14. Natural Resources
15. Improvement in Food Resources

New Books