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61
MCQ (Single Correct Answer)

Assertion (A) Addition reaction of water to but-1-ene in acidic medium yields butan-1-ol.

Reason (R) Addition of water in acidic medium proceeds through the formation of primary carbocation.

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.
62
MCQ (Single Correct Answer)

Assertion (A) p-nitrophenol is more acidic than phenol.

Reason (R) Nitro group helps in the stabilisation of the phenoxide ion by dispersal of negative charge due to resonance.

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.
63
MCQ (Single Correct Answer)

Assertion (A) IUPAC name of the compound

is 2-ethoxy-2-methylethane

Reason (R) In IUPAC nomenclature, ether is regarded as hydrocarbon derivative in which a hydrogen atom is replaced by - OR or - OAr group [where, $\mathrm{R}=$ alkyl group and $\mathrm{Ar}=$ aryl group].

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.
64
MCQ (Single Correct Answer)

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.
65
MCQ (Single Correct Answer)

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.
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