The unbalanced reactions given in List-I are to be matched with the properties of their products given in List-II. Which of the following options is a CORRECT combination? List-I List-II (P) M g 3 N

Question

The unbalanced reactions given in List-I are to be matched with the properties of their products given in List-II. Which of the following options is a CORRECT combination?

List-I	List-II
(P) $M g_{3} N_{2} + H_{2} O \to$	(i) One of the products is a diatomic gas at room temperature
(Q) $Ca H_{2} + H_{2} O \to$	(ii) One of the products is basic in nature
(R) $K O_{2} + H_{2} O \to$	(iii) One of the products contains a peroxy linkage
(S) $N a_{2} O_{2} + C O_{2} \to$	(iv) One of the products turns red litmus blue
	(v) One of the products is amphoteric in nature
	(vi) One of the products is a carbonate salt

The correct option is :

TestHub · Accepted Answer

P: Magnesium nitride hydrolyses to magnesium hydroxide and ammonia.

Both products are basic, so P-ii,iv.

Ammonia is not diatomic.

Q: Calcium hydride gives calcium hydroxide and diatomic hydrogen on hydrolysis.

Thus Q-i,ii,iv applies, but no peroxide forms.

R: $2K O_{2} + 2 H_{2} O \to 2KOH + H_{2} O_{2} + O_{2}$ gives a diatomic gas, a base and a peroxide.

Thus R-i,ii,iii,iv is correct.

S: $2N a_{2} O_{2} + 2C O_{2} \to 2N a_{2} C O_{3} + O_{2}$ gives S-i,ii,iv,vi, but no peroxide product.

None of the products is amphoteric.

Only option B has all its listed properties correct.

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Options:

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