Subject

Chemistry

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

41.

Identify A and predict the type of reaction


A.

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42.

The IUPAC name of the compound

  • 3-keto-2-methylhex-4-enal

  • 5-formylhex-2-en-3-one

  • 5-methyl-4-oxohex-2-en-5-al

  • 5-methyl-4-oxohex-2-en-5-al


A.

3-keto-2-methylhex-4-enal



Aldehydes get higher priority over ketone and alkene in numbering of principal C-chain.
therefore 3-keto-2-methylhex-4-enal

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43.

Which of the following reactions is appropriate for converting acetamide to methanamine?

  • Carbylamine reaction

  • Hoffmann hypobromamide reaction

  • Stephens reaction

  • Stephens reaction


B.

Hoffmann hypobromamide reaction

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44.

The heating of phenyl-methyl ethers with HI produces.

  • Ethyl chlorides

  • Iodobenzene

  • Phenol

  • Phenol


C.

Phenol

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45.

The correct increasing order of basic strength for the following compounds is 

  • II < III < I 

  • III < I < II

  • III < II < I

  • III < II < I


D.

III < II < I

–NO2 has strong –R effect and –CH3 shows +R effect. Therefore, Order of basic strength is 

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