Question

Assertion (A): Zn, Mg react with acids and liberate hydrogen gas. Reason (R): More reactive metals react with acids and liberate hydrogen gas.

1 point

(1) A and R are correct, R is correct explanation of ‘A’

(2) A and R are correct, R is not correct explanation of ‘A’

(3)A is correct and ‘R’ is incorrect

(4)‘A’ is incorrect and R is correct.

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Answer 1

Answer:

(2) is correct option

Explanation:

Answer 2

Answer:

A and R are correct, and R is the correct explanation of ‘A’.i.e.option(1).

Explanation:

• In the periodic table, magnesium (Mg) is an s-block element, whereas zinc (Zn) is a metal belonging to the d-block. Let's use the reaction of zinc and magnesium with hydrochloric acid as an example. Which is as follows:-

$\mathrm{Zn+2HCl\rightarrow ZnCl_2+H_2}$              (1)

$\mathrm{Mg+2HCl\rightarrow MgCl_2+H_2}$             (2)

In both reactions, hydrogen gas is evolving(H₂).

• Salt is produced and hydrogen gas is released when an acid reacts with metals. Whatever the metal, hydrogen is constantly evolving.

Hence, the correct answer among the given options is (1)i.e.A and R are correct, and R is the correct explanation of ‘A’.

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