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CBSE

Chemistry

NEET Chemistry : Hydrocarbons

51.

CH $\equiv$ CH $\to_{H_{2} {SO}_{4}}^{{HgSO}_{4}}$ $\to_{H_{2} O}^{{CH}_{3} MgBr}$ $\overset{P / {Br}_{2}}{\to}$

52.

Assertion: Cis-2-butene gives meso-2, 3-butanediol with dilute alkaline KMnO₄ solution.

Reason : Dilute alkaline KMnO₄ solution gives trans addition with alkenes.

If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false

53.

Identify the final product.

54.

Which of the following is aromatic?

55.

Assertion : The presence of Ag⁺ enhances the solubility of alkenes in water.

Reason : Alkenes are weakly polar in nature.

If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false

56.

$C_{6} H_{6} \to_{H_{2} {SO}_{4}}^{{HNO}_{3}} X \to_{{FeCl}_{3}}^{{Cl}_{2}} Y$

In the above sequence Y can be

57.

Propene on hydroboration and oxidation produces

58.

Degree of unsaturation of A= 2 double or triple bond. Identify A.

59.

Assertion : Phenol is more reactive than benzene towards electrophilic substitution reaction.

Reason : In the case of phenol, the intermediate carbocation is more resonance stabilised.

If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.

60.

Number of bonds in benzene :

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