Matter in Our Surroundings Class IX- Chemistry Questions Banks-1

Chemistry Adda Class IX, Chemistry Questions Banks

Chapter 1: Matter in Our Surroundings

1.      What is the normal room temperature? [1]

2.      Are the melting point of the solid state and the freezing point of the liquid state of a substance different? [1]

3.      A certain substance ‘A’ cannot be compressed but takes up the shape of any container in which it is placed. What is the physical state of 'A'? [1]

4.      A rubber band changes its shape when stretched. Can it be regarded as solid? [1]

5.      What are volatile liquids? [1]

6.      Which scale of measuring the temperature is the best? [1]

7.      Define diffusion [1]

8.      Is matter continuous or particulate? [1]

9.      What are the factors on which evaporation depends? [1]

10.  Define humidity. [1]

11.  Define evaporation. [1]

12.  Write the full form of L.P.G. & C.N.G. [1]

13.  Why do the states of matter differ? [1]

14.  Define melting point. [1]

15.  Inspite of being solid, a sponge is compressible. Comment. [1]

16.  What are the factors that determine the state of a substance? [2]

17.  Why does our palm feel cold when we put some acetone, petrol or perfume on it? [2]

18.  Liquids generally have lower density as compared to solids. But ice floats on water. Why?[2]

19.  Why do we sweat on a humid day? [2]

20.  Why do solids generally lack the property of diffusion? [2]

21.  How will you demonstrate that air contains water vapour ? [2]

22.  Can matter change its state? State the conditions under which it changes. [2]

23.  Why do we see water droplets on the outer surface of a glass containing ice-cold water? [2]

24.  Explain why there is no rise in temperature of water when it starts boiling although it is still being heated. [2]

25.  What is dry ice? Why it is known so? [2]