Assertion :Bond energy for breaking up a bond is endothermic. Reason: Heat is required to overpower the attractions between two atoms.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Usually bond energy required for breaking up a bond is endothermic ( $Δ H > 0$ ). Heat is required to overpower the attractions between two atoms. Both assertion and reason are facts.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Q. Assertion : Two electrons of helium atom are placed in only one shell but three electrons of lithium need two shells.
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Statement-1 : In (cyclobutadiene) all C-C bond lengths are equal.

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The Assertion and Reason are given, you are required to choose any one of the following four responses.

A) Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

B) Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

C) The Assertion is correct but Reason is incorrect

D) Both Assertion and Reason are incorrect

Assertion (A) Bond angle in ethers is slightly less than the tetrahedral angle.
Reason (R) There is a repulsion between the two bulky (- R) groups.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

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