Subject

Chemistry

Class

JEE Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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41.

A compound 'A' having the molecular formula C5H12O, on oxidation gives a compound 'B' with molecular formula C5H10O. Compound 'B' gave a 2, 4-dinitrophenylhydrazine derivative but did not answer haloform test or silver mirror test. The structure of compound 'A' is 

  • CH3-CH2-CH2-CH2-CH2-OH

  • CH3-CH2-CH2C|OHH-CH3

  • CH3-CH2-C|OHH-CH2-CH3

  • CH3-CH2-C|CH3H-CH2-OH


C.

CH3-CH2-C|OHH-CH2-CH3

Since, compound B gave a 2, 4-dinitrophenylhydrazine derivative but did not answer halogen or silver mirror test, it must contain a -C=O group, but it is neither a methyl ketone nor an aldehyde.

Although compound B is obtained by the oxidation of compound A, having molecular formula C5H12O, so compound A must be a secondary alcohol.


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42.

Which of the following is a better reducing agent for the following reduction ?

RCOOH → RCH2OH

  • SnCl2/HCl

  • NaBH4/ ether

  • B2H6/ H3O+

  • H2/ Pd


43.

Choose the amide which on reduction with LiAlH4 yields a secondary amine

  • ethanamide

  • N-methylethanamide

  • N, N-dimethylethanamide

  • phenylmethanamide


44.

Arrange the following amines in the decreasing order of their basic strength. Aniline (I), Benzylamine (II), p-toluidine (III)

  • I > II > III

  • II > III > I

  • III > II > I

  • II > I > III


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45.

Which one among the following is not an analgesic?

  • Ibuprofen

  • Naproxen

  • Aspirin

  • Valium


46.

Match the vitamin of column I with deficiency disease given in column II

Column -I Column - II
1. Vitamin A A. Scurvy
2. Vitamin B12 B. Hemorrhagic condition
3. Vitamin C C. Sterility
4. Vitamin E D. Xerophthalmia
5. Vitamin K  E. Pernicious anaemia

  • A - 3; B - 4; C - 5; D - 2; E - 1

  • A - 3; B - 4; C - 5; D - 1; E - 2

  • A - 3; B - 5; C - 4; D - 1; E - 2

  • A - 3; B - 5; C - 4; D - 2; E - 1


47.

Which of the following is a double base propellant ?

  • Methyl nitrate and nitromethane

  • Nitroglycerine and nitrocellulose

  • Kerosine and alcohol

  • Acrylic rubber and liquid N2O4


48.

Bithional is added to soap as an additive to function as a/an

  • hardener

  • dryer

  • antiseptic

  • buffering agent


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