States of matter

Below are the example of crystalline solid except for

• Diamond

• Salt (NaCl)

• Na

• Glass

Choose the correct type for Diamond

• Metalic

• Ionic

• molecular covalent

• giant covalent

Choose the false statement for phase diagram of water

• The boundary between solid and liquid is negative slope

• The triple point is above 1 atm

• The triple point is below 1 atm

• The boiling point of water at 1 atm is

  $100\ \degree C$

According to the kinetic theory, particles of different gases at the same temperature

have the same

• volume

• pressure

• average kinetic energy

The intermolecular forces between particles in a solid are

• weaker than those in a gas.

• stronger than those in a liquid.

• of different types than those in a liquid.

• too weak to hold the particles in fixed positions.

A liquid boils when its

• temperature is equal to 273 K.

• vapour pressure is equal to, or greater than the external pressure.

• vapour pressure is exactly 1 atm.

• temperature is greater than room temperature.

Based on the phase diagram of pure substance X, choose the correct statement.

• S is the critical point of X.

• Solid X and vapour X exist in equilibrium at point T.

• At point Q, x exist as solid, liquid and vapour in equilibrium

• The melting point and boiling point decrease with the increase in pressure

Choose the false statement

• Held by ionic bond

• It is example of metallic solid

• Held by metallic bond

• molecules are in orderly arrangement

Which of these is the correct properties of liquid

• vibrate and rotate at fixed position

• Highly compressible

• no definite shape or volume

• has very strong IMF between particles

Which of these is the correct properties of solid

• move randomly

• highly compressible

• no definite shape or volume

• has high density