Important Questions of Organic Chemistry – Some Basic Principles and Techniques Chemistry | Zigya

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421.

Acyclic stereoisomer having the molecular formula C4H7Cl are classified and tabulated. Find out the correct set of numbers

  • Geometrical  optical
    6 2
  • Geometrical optical
    4 2
  • Geometrical optical
    6 0
  • Geometrical optical
    6 0

422.

Compare List-I and List-II and choose the correct matching codes from the choices given.
List - I List - II
A. Glycerol i. Sublimation
B. o-nitrophenol ii. Beilstein's test
C. Anthracene iii. Victor- Meyer's method
D. Halogens iv. Steam distillation
E. Molecular weight

v. Vaccum distillation

vi. Eudiometry

  • A - v; B - iv; C - i; D - ii; E - iii

  • A - iv; B - v; C - i; D - vi; E - ii

  • A - vi; B - iv; C - i; D - iii; E - ii

  • A - v; B - iv; C - vi; D - ii; E - iii


423.

Pick out the wrong statement.

  • Toluene shows resonance

  •  is non-aromatic

  • The hybrid state of carbon in carbonyl group is sp2 

  • The hyper-conjugative effect is known as no bond resonance


424.

The number of isomers for the compound with the molecular formula C2BrClFI is

  • 3

  • 4

  • 5

  • 6


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425.

Which among the following statements is correct with respect to the optical isomers?

  • Enantiomers are non-superimposable mirror images

  • Diastereomers are superimposable mirror images

  • Enantiomers are superimposable mirror images

  • Meso foms have no plane of symmetry


426.

In Lassaigne's test, a blue colour is obtained if the organic compound contains nitrogen. The blue colour is due to

  • K4[Fe(CN)6]

  • Fe4[Fe(CN)6]3

  • Na3[Fe(CN)6]

  • Cu2[Fe(CN)6]


427.

Which of the following Fischer's projection formula is identical to D-glyceraldehyde?


428.

A molecule of urea can show :

  • chain isomerism

  • position isomerism

  • geometrical isomerism

  • tautomerism


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429.

Which of the following compounds will exhibit cis-trans isomerism ?

  • 2-butene

  • 2-butyne

  • 2-butanol

  • Butanone


430.

When 32.25 g of ethyl chloride is subjected to dehydrohalogenation reaction the yield of the alkene formed is 50%. The mass of the product formed is (atomic mass of chlorine is 35.5).

  • 14 g

  • 28 g

  • 64.5 g

  • 7 g


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