NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 621 - 624 of 1258

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Question number: 621

» Organic Compounds with Oxygen » Aldehyde and Ketones » Nucleophilic Addition to >C=O Group

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MCQ▾

Question

In the following sequence of reaction the end-product is?

 Condensation of aldehyde with mild alkali and then dehydration

Condensation of Aldehyde with Mild Alkali and then Dehydration

Find the end-product produced by the condensation of aldehyde with mild alkali and then dehydration middle product

Choices

Choice (4) Response

a.

Aldol

b.

Paraldehyde

c.

Crotonaldehyde

d.

Metaldehyde

Question number: 622

» Organic Compounds with Oxygen » Aldehyde and Ketones » Cannizzaro Reaction

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MCQ▾

Question

The below reaction is an example of?

Equation of reaction of aldehyde with NaOH

Equation of Reaction of Aldehyde with NaOH

Showing equation of reaction of aldehyde with NaOH which gives alcohol and sodium formate or formic acid

Choices

Choice (4) Response

a.

Rosenmund reaction

b.

Wurtz reaction

c.

Cannizaro’s reaction

d.

Frankland reaction

Question number: 623

» Organic Compounds with Oxygen » Aldehyde and Ketones » Relative Reactivities of Aldehydes and Ketones

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MCQ▾

Question

Aldehydes are first oxidation products of?

Choices

Choice (4) Response

a.

Secondary alcohols

b.

Tertiary alcohols

c.

Primary alcohols

d.

Monohydric alcohols

Question number: 624

» Organic Compounds with Oxygen » Aldehyde and Ketones » Grignard Reagent Oxidation Reduction

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MCQ▾

Question

For the given reaction product Y is?

Reaction of 1-bromo-4-fluorobenzene with magnesium & dry ether

Reaction of 1-Bromo-4-Fluorobenzene with Magnesium & Dry Ether

Find the end-product produce by reaction of 1-bromo-4-fluorobenzene with magnesium and dry ether

Choices

Choice (4) Response

a.

End produced by reaction of 1-bromo-4-fluorobenzene -Choice - A

End Produced by Reaction of 1-Bromo-4-Fluorobenzene -Choice - A

Find the right end-product produce by reaction of 1-bromo-4-fluorobenzene with magnesium and dry ether

b.

End produced by reaction of 1-bromo-4-fluorobenzene -Choice - B

End Produced by Reaction of 1-Bromo-4-Fluorobenzene -Choice - B

Find the right end-product produce by reaction of 1-bromo-4-fluorobenzene with magnesium and dry ether

c.

End produced by reaction of 1-bromo-4-fluorobenzene -Choice - C

End Produced by Reaction of 1-Bromo-4-Fluorobenzene -Choice - C

Find the right end-product produce by reaction of 1-bromo-4-fluorobenzene with magnesium and dry ether

d.

End produced by reaction of 1-bromo-4-fluorobenzene -Choice - D

End Produced by Reaction of 1-Bromo-4-Fluorobenzene -Choice - D

Find the right end-product produce by reaction of 1-bromo-4-fluorobenzene with magnesium and dry ether