Physics Chemistry MCQs PT2

Which of the following sets of phenomenon would increase on raising the temperature?

• Diffusion, evaporation,compression of gases

• Evaporation,compression of gases, solubility

• Evaporation,diffusion,expansion of gases

• Evaporation,solubility,diffusion,compression of gases

The property to flow is unique to fluids.Which one of the following statements is correct:-

• Only gases behave like fluids

• Gases and solids behave like fluids

• Only liquids are fluids

• Gases and liquids behave like fluids

During summer, water kept in an earthen pot becomes cool because of the phenomenon of

• Diffusion

• transpiration

• osmosis

• evaporation

Which of the following are physical changes?

(i) Melting of iron metal (ii) Rusting of iron (iii) Bending of an iron rod (iv) Drawing a wire of iron metal

• (i), (ii) and (iii)

• (i), (ii) and (iv)

• (i), (iii) and (iv)

• (ii), (iii) and (iv)

Rusting of an article made up of iron is called:-

• corrosion and it is a physical as well as chemical change

• dissolution and it is a physical change

• corrosion and it is a chemical change

• dissolution and it is a chemical change

A few substances are arranged in the increasing order of 'forces of attraction' between their particles. Which one of the following represents a correct arrangement?

• Water, air, wind

• Air, sugar, oil

• Oxygen, water, sugar

• Salt, juice, air

Soap Solution is a type of:-

• True solution

• Colloids

• Suspension

• Homogeneous mixture

Motion of an object whose, Velocity -time graph is a straight line parallel to time axis indicates:-

• in uniform motion

• at rest

• in non-uniform motion

• moving with uniform acceleration

According to the third law of motion, action and reaction:-

• always act on the same body

• always act on different bodies in opposite directions

• have same magnitude and directions

• act on either body at normal to each other

Assertion (A): A gas can easily be compressed by applying pressure. Reason(R): Since the inter-particle spaces between gases are very large, they can be decreased by applying pressure.

• Both (A) and (R) are true and (R) is the correct explanation of (A).

• Both (A) and (R) are true but (R) is not the correct explanation of (A).

• (A) is true but (R) is false.

• (A) is false but (R) is true.