Assertion :Ethylene $(C_{2} H_{4})$ has a higher carbon-carbon bond energy that acetylene. Reason: Ethylene contains a double bond and acetylene has only a single bond between the carbons.

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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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
$C H \equiv C H > C H_{2} = C H_{2}$
Triple bond have higher energy than double bond. Acetylene have three bonds between carbons. Both Assertion and Reason are incorrect.

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Similar questions

Q. Assertion : In the bonding molecular orbital (MO) of

H_{2}

, the electron density is increased between the nuclei.
Reason : The bonding MO is

ψ_{A} + ψ_{B}

, which shows destructive interference of the combining electron waves.

Assertion (A) Boiling points of alcohols and ethers are high.
Reason (R) They can form intermolecular hydrogen-bonding.
(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.

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.

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - $C H_{2}$ - group.

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Assertion :Ethylene (C2H4) has a higher carbon-carbon bond energy that acetylene. Reason: Ethylene contains a double bond and acetylene has only a single bond between the carbons.

The correct option is D Both Assertion and Reason are incorrectCH≡CH>CH2=CH2 Triple bond have higher energy than double bond. Acetylene have three bonds between carbons. Both Assertion and Reason are incorrect.

Assertion :Ethylene $(C_{2} H_{4})$ has a higher carbon-carbon bond energy that acetylene. Reason: Ethylene contains a double bond and acetylene has only a single bond between the carbons.

The correct option is D Both Assertion and Reason are incorrect
$C H \equiv C H > C H_{2} = C H_{2}$
Triple bond have higher energy than double bond. Acetylene have three bonds between carbons. Both Assertion and Reason are incorrect.