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CBSE

Subject

Chemistry
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NEET Chemistry : Aldehydes, Ketones and Carboxylic Acids

Multiple Choice Questions

201.

Keto - enol tautomerism is not observed in

  • C6H5COC6H5

  • C6H5COCH=CH2

  • C6H5COCH2COCH3

  • CH3COCH2COCH3



202.

For making distinction between 2-pentanone and 3-pentanone, the reagent to be employed is

  • K2Cr2O7/H2SO4

  • Zn-Hg/HCl

  • SeO2

  • Iodine/NaOH



203.

The reaction of formaldehyde and ammonia gives:

  • hexamethylene tetramine

  • bakelite

  • urea

  • triethylene tetramine



204.

Which of the following compounds has maximum volatility?



205.

Reaction by which benzaldehyde cannot be prepared?



206.

Which of the following compounds is not formed in iodoform reaction of acetone?

  • CH3COCH2I

  • ICH2COCH2I

  • CH3COCHI2

  • CH3COCl3



207.

The order of stability of the following tatutomeric compound is

           

  • I> II> III

  • III > II> I

  • II> I> III

  • II > III> I



208.

Structure of the compound whose IUPAC name is 3-ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid is



209.

Two aromatic compounds having formula C7H8O which are easily identifiable by FeCl3 solution test (violet colouration) are:

  • o-cresol and benzyl alcohol

  • m-cresol and p-cresol

  • o-cresol and p-cresol

  • methyl phenyl ether and benzyl alcohol



210.

Which one of the following produced when acetone is saturated with HCl gas?

  • Acetone alcohol

  • Phorone

  • Mesityl oxide

  • Benzene



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