Question

Assertion: Quicklime reacts vigorously with water releasing a large amount of heat.
Reason: The above chemical reaction is an exothermic reaction,
a) Both assertion and reason are
b) Both assertion and reason are
CORRECT and reason is the
CORRECT but, reason is NOT THE
CORRECT explanation of the
CORRECT explanation of the
assertion
assertion
c) Assertion is CORRECT but, reason is d) Assertion is INCORRECT but, reason
INCORRECT.
is CORRECT.​

Answer 1

Answer:

Both assertion and reason are correct and reason is the correct explanation of the assertion.

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Answer 2

Quicklime reacts vigorously with water releasing a large amount of heat. The above chemical reaction is an exothermic reaction. Both the assertion and reason are correct statements and the reason is the correct explanation of the assertion.

Explanation:

• When quicklime (calcium oxide) is treated with water, slaked lime (Calcium hydroxide) is formed with the evolution of a large amount of heat.
• The reaction is given as:

        $\[CaO + {H_2}O \to Ca{(OH)_2}\]$

• As the heat energy is evolved during the reaction, the reaction is known as an exothermic reaction.
• Therefore, both the assertion and the reason are correct and the reason is the correct explanation of the assertion.