Properties of Liquids

The following are correct about descriptions of water EXCEPT:

• Living cells are composed of 70-95 % water

• Life absolutely depends on the properties of water.

• Life probably evolved in water.

• water covers 1/2 of the earth

The following are Properties of Water EXCEPT:

• Polar

• Low specific heat

• Universal Solvent

• Liquid in Nature

The amount of energy required to raise the temperature of unit mass of a substance 1^oC is called?

• specific heat

• polarity

• latent heat of fusion

• heat of vaporization

Water is the composition of water?

(a)  

Why specific heat of water is high as compare to  other substances?

• Water molecule form  weak intermolecular  hydrogen bonds with  each other, so to break  those bonds high  amount of energy is  required.

• Water molecule form  strong intermolecular  hydrogen bonds with  each other, so to break  those bonds high  amount of energy is  required.

• Water molecule form  strong intermolecular  hydrogen bonds with  each other, so to break  those bonds low  amount of energy is  required.

• Water molecule form  weak intermolecular  hydrogen bonds with  each other, so to break  those bonds low  amount of energy is  required.

The energy required to convert liquid  in to gas (vapour) phase at  constant temperature is known as ?

• specific heat

• latent heat of fusion

• latent heat of vaporization

• polarity

The amount of energy required to  converted unit mass of a solid to a  liquid at the same temperature is  called?

• specific heat

• latent heat of fusion

• polarity

• latent heat of vaporization

What causes the formation water drops when it rains?

• adhesion

• cohesion

• capillary action

• polarity

What causes the drop to cling to other surfaces?

• adhesion

• cohesion

• capillary action

• polarity

Spiders can walk on waters because of:

• adhesion

• cohesion

• capillary action

• surface tension