Question

please answer the question !!!!!
​

Answer 1

Answer:

D. ii and iv

Explanation:

i. Cu + HCl ----> No reaction (beacuse Cu is less reactive than H, so no gas is evolved)

Option i is incorrect

ii. Fe + HCl ----> FeCl2 + H2 (gas is evolved)

Option ii is correct

iii. Mg + HCl ----> MgCl2 + H2 (gas is evolved)

Option iii is incorrect

iv. Zn + HCl ----> ZnCl + H2 (gas is evolved)

Option iv is correct

So correct options are ii & iv

Correct answer is D. ii and iv

Mark me as Brainliest

Answer 2

Correct two combinations are D. ii and iv​. Metal gas evolved Iron and Zinc.

Explanation:

• Almost all metals include trace quantities of oxygen, hydrogen, and nitrogen, which are commonly referred to as "gases in metals" if they occur as oxides, hydrides, or nitrides or are in some configuration.
• The majority of metals react with acids to produce gas. Metals, on the other hand, are far too inert.

1. Copper is not reactive to acids.

2. When iron reacts with acids, hydrogen gas is produced.

3. Magnesium reacts with acids to produce hydrogen gas.

4. When zinc reacts with acids, hydrogen gas is produced.