Match the List-I and List-II using the correct code given below the list.

List-I	List-II
A. Hydrogenation of unsaturated vegetable oils	1. Rocket fuel
B. Calcium hydride	2. Welding of metals
C. Liquid hydrogen	3. Desiccant
D. Atomic hydrogen	4. Margarine

(a)

A	B	C	D
4	3	1	2

(b)

A	B	C	D
3	4	2	1

(c)

A	B	C	D
1	3	4	2

(d)

A	B	C	D
2	1	4	3

Which of the following causes temporary hardness of water?

(a)

MgCl₂

(b)

Na₂SO₄

(c)

Mg(HCO₃)₂

(d)

NaCl

Which of the following can oxidise Hydrogen peroxide?

(a)

acidified KMnO₄

(b)

Cu

(c)

dil. HNO₃

(d)

CrO₂Cl₂

Which of the following process is important in food industry?

(a)

Dehydration

(b)

Dehalogenation

(c)

Hydrogenation

(d)

Carboxylation

Which of the following is used as desiccants to remove moisture from organic solvents?

(a)

Calcium hydride

(b)

LiAIH₄

(c)

Sodium boro hydride

(d)

Sodium hydride