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Thursday, May 19, 2011

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] 

4 comments:

Unknown said...

Really this is a very useful site for student

Unknown said...

will i be able to know the answers of these questions? sir please.

Unknown said...

Could you please include value-based questions and their answers? It would be really helpful for Summatives and activity projects for CBSE.

Unknown said...

Could you please include value-based questions and their answers? It would be really helpful for Summatives and activity projects for CBSE.

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