MCQs of Chapter # 06 [Matter] Class IX

 

Chemistry IX

MCQs [Chapter# 06]

 

i.                    According to Kinetic molecular theory, the movement of particles increases with:

a.      Increase in temperature

b.      Decrease in temperature

c.       Increase in pressure

d.      Decrease in pressure

 

ii.                 It does not have particular shape:

a.       Solid

b.     Liquid

c.       Gas

d.      Plasma

 

iii.               They have strongest intermolecular forces:

a.      Solid

b.      Liquid

c.       Gas

d.      Plasma

 

iv.                They have highest intermolecular spaces:

a.       Solid

b.     Liquid

c.       Gas

d.      Plasma

 

v.                  Rate of diffusion of gas is inversely proportional to the:

a.      Square root of its density

b.      Square root of its mass only

c.       Cubic root of its density

d.      Cubic root of its mass only

 

vi.                The diffusion of hydrogen gas is:

a.       2 times faster than oxygen gas

b.      3 times faster than oxygen gas

c.      4 times faster than oxygen gas

d.      5 times faster than oxygen gas

 

vii.             Boiling point of water is:

a.       -4⁰C

b.      0⁰C

c.       50⁰C

d.     100⁰C

 

viii.           Camphor, dry ice, iodine are the examples of:

a.      Sublimation

b.      Evaporation

c.       Vaporization

d.      All of the above

 

ix.                The escape of liquid from the surface of the liquid is:

a.      Evaporation

b.      Sublimation

c.       Boiling point

d.      Fusion

 

x.                  The melting point of water is:

a.       -4⁰C

b.     0⁰C

c.       50⁰C

d.      100⁰C