Chemistry - Some Important points and important questions on organic chemistry

Question - 1

The substance which has been asaigned octane number of -45 is

  • A n -octane
  • B n -heptane
  • C n -nonane
  • D None

Question - 2

Which branched chain isomer of the hydrocarbon with molecular mass 72 give only one isomer of mono substituted alky1 halide?

  • A neopentane
  • B isohexane
  • C neohexane
  • D tertiany buty1 chloride

Question - 3

For which of the following compounds the Lassaigne's test of nitrogen will fail?

  • A H2 NCONH.NH2 HCL
  • B H2N.NH2.2HCL
  • C NH2 CONH2
  • D None

Question - 4

The 1996 Nobel Prize in chemistry goes to

  • A F. Curl
  • B H.W. Kroto
  • C E.Smalley
  • D jointly to the above three persons

Question - 5

Which alkyl halide has maximum density?

  • A C3H7I
  • B C2H5I
  • C CH3 I
  • D CH3Br

Question - 6

On treating phenol with PC15 the main product is

  • A chlorobenzene
  • B triphenyl phosphate
  • C hexachlorobenzane
  • D BHC

Question - 7

Arrange the following compounds in order of increasing dipole moment : Toluene (1); m-dichlorobenzene (II); o-dichlorobenzene (III); and p-dichlorobenzene (IV).

  • A I < IV< II< III
  • B IV< I < II < III
  • C IV < I < III < II
  • D IV< II < I < III

Question - 8

Which of these following reagents will convert glycerol to acrolein?

  • A P2O5
  • B conc.H2SO4
  • C KHSO4
  • D All the three

Question - 9

Which of the following compounds does not react with metalic sodium?

  • A CH3CH(OH)Ch3
  • B CH3-O-CH3
  • C CH3COOH
  • D C2H5OH

Question - 10

Which of the following will react with water?

  • A CHCL3
  • B CCL3CHO
  • C CCL4
  • D CLCH2-CH2-Cl
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