Solvation and Disollution

Q. How we will separate a mixture of salt and sugar?

Q.

(a) Name the purest form of water occurring in nature.

(b) Is the above form of water 100% pure? If not, name the impurities which are generally present in it.

(c) Name two more impurities which dissolve in the above form of water in industrial regions. How do these impurities harm?

Q.

Ionic solids are soluble in water because of the process of dissolution.

1. True

2. False

Q.

Which of the following is not present as dissolved gases in water?

1. Oxygen

2. Carbon dioxide

3. Nitrogen

4. Carbon monoxide

Q. Which of the following is not present as dissolved gases in water?

1. Oxygen
2. Nitrogen
3. Carbon monoxide
4. Carbon dioxide

Q.

Dissolution does not occur when covalent compounds are dissolved in covalent solvents like Benzene.

1. True

2. False

Q. Dissolution does not occur when covalent compounds are dissolved in covalent solvents like Benzene.

1. True
2. False

Q. Hydrophilic molecules are while hydrophobic molecules are .

1. acids
2. water repellants
3. water absorbents
4. bases

Q.

Dissolution does not occur when covalent compounds are dissolved in covalent solvents like Benzene.

1. True

2. False

Q. A solid gets converted to liquid by releasing heat to its surroundings.

1. True
2. False

Q.

Which of the following is not present as dissolved gases in water?

1. Nitrogen

2. Carbon monoxide

3. Carbon dioxide

4. Oxygen

Q. Dissolution of gases in liquids is

1. Exo-thermic
2. Endo-thermic

Q.

Ionic solids are soluble in water because of the process of dissolution.

1. True
2. False