Assertion (A): Carbon monoxide will not produce an acid when made to react with water?

Reason (R): Carbon monoxide is a neutral oxide.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

In the given equation, identify the role played by concentrated sulphuric acid.

S + 2H₂SO₄ ⟶ 3SO₂ + 2H₂O

1. Non-volatile acid
2. Oxidising agent
3. Dehydrating agent
4. None of the above

Which of the following figures correctly describes electrorefining ?

1.

2.

3.

4.

Assertion (A): The RMM of a gas is 64, then its vapour density is 32.

Reason (R): RMM is twice the vapour density.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.