Question

Assertion : A metal on reaction with acid releases a gas which turns lime water milky.
Reason : The gas released is hydrogen.
a) Both assertion and reason are correct statements and reason is the correct explanation of assertion
b) Both assertion and reason are correct statements but reason is not the correct explanation of assertion
c) Assertion is correct but reason is an incorrect statement
d) Both assertion and reason are incorrect statement

Answer 1

Explanation:

Given -

• Assertion and Reason

To Find -

• Which option is correct

Now,

As we know that :-

• carbon dioxide gas turns lime water milky.

And

Here, It is given that :-

A metal on reaction with acid releases a gas which turns lime water milky.

Here, I took the Metal Magnesium (Mg) and Hydrochloric acid (HCl)

Chemical equation :-

• 2Mg + 2HCl → MgCl2 + H2

Here, we see that the gas released is hydrogen gas (H2), and H2 doesn't turns lime water milky.

So,

Assertion is wrong.

And

In Reason It is Given that :-

• The gas released is hydrogen.

It is True.

Because here we see that when metal reacts with acid it realeses hydrogen gas.

Hence,

Assertion is wrong and Reason is true.

Now,

According to the question, Option 4 is correct.

Because Assertion is wrong.