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    CBSE

    Subject

    Chemistry
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    NEET Chemistry : Aldehydes, Ketones and Carboxylic Acids

    Multiple Choice Questions

    151.

    Oxidation product of 1,2-cyclopentanediol with HIO4 gives

    • OHC-(CH2)3-CHO

    • COOH-CH-CH2-CH2-COOH

    • None of these

    Answer
    • 152.

    Two moles of acetic acid are heated with P2O5 .The product formed is :

    • 2 moles of ethyl alcohol

    • formic anhydride

    • acetic anhydride

    • 2 moles of methyl cyanide

    Answer
    • 153.

    The reaction , ROH + H2CN2 in the presence of HBF4 , gives the following product :

    • ROCH3

    • RCH2OH

    • ROHCN2N2

    • RCH2CH3

    Answer
    • 154.

    CH3CHI2 →KCN →H2O , ∆ ?

    Here the end product would be :

    • 2 - cyano propionic acid

    • ethane - l , 1 - dicarboxylic acid

    • 2 - methyl ethanoic acid

    • propionic acid

    Answer
    • 155.

    Assertion : (CH3)3CCOC(CH3)3 and acetone can be distinguished by the reaction with NaHSO3.

    Reason : HSO3- is the nucleophile in bisulphite addition.

    • 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.

    Answer
    • 156.

    Which will give chiral molecule ?

    • CH3COCl →LiAlH4

    • C2H5CHO →H+/H2OCH3MgBr

    • (CH3)2CHC2H5 →Cu

    • CH3-CH=C(CH3)2 →Cl2

    Answer
    • 157.

    If the enolate ion combines with carbonyl group of ester , we get :

    • aldol

    • α , β - unsaturated ester

    • β - keto aldehyde

    • acid

    Answer
    • 158.

    Assertion : p-N,N-dimethylaminobenzaldehyde undergoes benzoin condensation.

    Reason : The aldehydic (-CHO) group is meta directing.

    • 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

    Answer
    • 159.

    Identify the product Y in the sequence :

    CH3CHO + CH3MgI →Ether X →H2O/H+ Y , is

    • CH3OH

    • CH3CH2OH

    • (CH3)2CHOH

    • (CH3)3COH

    Answer
    • 160.

    Which of the following compounds will react with NaHCO3  solution to give sodium salt and carbon dioxide ?

    • Acetic acid

    • n - hexanol

    • Phenol

    • Both (b) and (c)

    Answer
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