Solids

Q.

What is the main reason behind solid's definite shape?

1. Molecules of solid can interchange their positions.

2. Strong intermolecular force of attraction, and molecules of solid cannot interchange their positions.

3. Weak intermolecular force of attraction.

4. Molecules of solid can change their volume.

Q. A stone retains its shape even when external pressure is applied. This property is called _____.

1. transparency
2. incompressibility
3. flowability
4. elasticity

Q. Explain why gold is a pure substance but the air is a mixture.

Q.

I want to know a brief description of what is capillarity..

Q.

Write the physical properties of nitrogen.

Q. A solid resists deformation.

1. False
2. True

Q.

The hardness of solids is due to the fact that their particles:

1. cannot be separated at all

2. remain in a fixed place

3. are held close to each other by strong forces of attraction

4. The hardness of solids is due to the fact that their particles are held close to each other by strong forces of attraction.

Q. Inner surface of a cylindrical shell of lenght L and material thermal conductivity K is kept at constant temprature T1 and outer surface with temprature T2 l, such that T1>T2. Radii of inner n outer surfaces are R and 2R respectivly. If cylinder is replaced by an another cylinder of lenght L/2 and radii of inner and outer surface is R/4 and R respectivly. Then the thermal conductivity becomes nK. If tempratures and heat current (dQ/dt) are same in both condition , then , find the value of n?

Q. Simple definition of equivalent cconductivity and molar conductivity .

Q. have the least interparticle distance between their particles.

1. Solids
2. Liquids
3. Gases

Q. Which amongst the following has the strongest interparticle force of attraction, at the room temperature?

1. Nitrogen
2. Mercury
3. Iron
4. Oxygen

Q. A solid resists deformation.

1. False
2. True

Q. A sponge is compressible and hence, its not a solid.

1. True
2. False

Q. ntderive d relation bw molar conductivity nd conductivityyn

Q. Gases are incompressible.

1. True
2. False

Q.

Which of the following is/are not compressible?

1. Solid

2. Liquid

3. Gas

4. Plasma

Q. Which amongst the following is not a property of solids?

1. Definite shape
2. Fluidity
3. Definite volume
4. Incompressibility

Q. Which of the following gas dissolves in water?

1. Helium and Argon
2. Carbon dioxide and Nitrogen
3. Oxygen and Carbon dioxide
4. Oxygen and Nitrogen

Q. A sponge can be compressed, so it is not an example of a solid.

1. True
2. False