Subject

Chemistry

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

51.

Lauryl alcohol on treatment with H2SO4 followed by neutralisation forms a product which is

  • cationic detergent

  • anionic detergent

  • neutral detergent

  • antidepressant


52.

Consider the following reaction sequence

CH3OH HBr 'A' KCN 'B' H2/ Ni 'C' HNO2 'D'

Choose the correct option regarding the different products obtained in the above reaction sequence:

  • 'D' is an alcohol consisting one carbon more than the starting alcohol

  • Product 'B' is formed via SN2-pathway

  • 'C' is an amine

  • All of the above


53.

Which of the following is crossed aldol product in the reaction?

CH3CHO + CH3CH2CHO 25°COH- 'P'


54.

Consider the following compounds

Cl3C - COOH Br3C - COOH I3C - COOH

         (I)                   (II)          (III)

The decreasing order of decarboxylation is

  • I > II > III

  • III > II > I

  • III > I > II

  • II > I > III


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55.

Which of the following is an example of carbylamine reaction?

  • 2Ph NH2 + CS2  (ii) conc. HCl(i) KOH Ph- NCS

  • R - NH2 + HNO2 0 - 5°C R - OH + N2 + HCl

  • Ph - NH2 + CHCl3 + 3KOH (alc.)  ph - NC + 3KCl + 3H2O

  • Ph2 - NH + HONO  Ph2 - N - N= O + H2O


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56.

C3H9N reacts with Hinsberg reagent and the product is insoluble in alkali but soluble in ether. This nitrogen containing compound is

  • primary amine

  • secondary amine

  • tertiary amine

  • methyl isocyanide


B.

secondary amine

C3H9N is a secondary amine.


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57.

Which of the following statements is incorrect?

  • Polypropylene is a thermoplastic polymer

  • Melamine-formaldehyde is a thermosetting polymer

  • Mixture of styrene and methyl methacrylate can form ionic addition polymer

  • Low-density polythene is a poor conductor of electricity


58.

Sugars are seperated by using the solvent BAW (n-butanol acetic acid -HO) and detected by spraying the plate with

  • aniline hydrogen phthalate solution

  • hydrogen peroxide solution

  • crystals of I2

  • cupric oxide


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59.

Polypropylene can be obtained by polymerisation of

  • CH2 = CH - CH2 - Cl

  • CH2 = CH - Cl

  • CH3 - Cl

  • CH3 - CHCl2


60.

Product 'Q' is

  • an amide

  • an amine

  • nitro compound

  • nitrile compound


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