Chemical Properties

Q. Choose the correct options regarding homologous series-

1. Chemical properties remain similar in a homologous series.
2. As the size of carbon chain in any homologous series increases, a gradation in physical properties is seen.
3. All of the above.
4. Melting and boiling point increase with molecular mass.

Q.

Name the enzyme which converts: [3 MARKS]
1. Milk into curd (yogurt)
2. Cane sugar into glucose and fructose
3. Glucose into ethanol.

Q.

Gas A, which is the major cause of global warming, combines with hydrogen oxide B in nature in the precence of an environmental factor C and a green material D to form a six carbon organic compound E and a gas F. The gas F in necessary for breathing.

(a) What is gas A ?

(b) What is the common name of B ?

(c) What do you think could be C ?

(d) What is material D ? Where is it found ?

(e) Name the organic compound E.

(f) What is gas F ? Name the natural process during which it is released.

Q.

What happens when concentrated sulphuric acid is added to glucose?

1. Water is removed from glucose

2. $O_2$ gas is evolved

3. $S{O}_3$ gas is evolved

Q.

Which of the following acids is prepared by sulphuric acid industrially?

1. Nitric acid

2. Hydrochloric acid

3. Phosphoric acid

4. Acetic acid

Q.

Sulphuric acid is not reacted with sodium chloride above a temperature of 200 degrees celcius as the glass apparatus gets damaged due to :

1. Sodium bisulphate

2. High heat

3. High pressure

4. Sodium sulphate

Q.

The property due to which a substance abosrbs moisture and dissolves in it is called

1. hygroscpoic

2. deliquescent

3. efflorescence

4. flouroscence

Q.

Metals get oxidised to their respective sulphates when they are reacted with conc. sulphuric acid.

Q.

Select the option which is a property of sulphuric acid?

1. The strong affinity of sulphuric acid for water

2. The non-affinity of sulphuric acid for water

3. The geometry of the sulphuric acid molecule

4. The hydrophobic nature of sulphuric acid

Q.

The gas released when conc. sulphuric acid reacts with formic acid is :

1. Sulphur dioxide

2. Sulphur trioxide

3. Carbon monoxide

4. Carbon dioxide