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 Multiple Choice QuestionsMultiple Choice Questions

101.

The chemical name of anisole is :

  • ethanoic acid

  • methoxy benzene

  • propanone

  • acetone


102.

Waxes are esters of :

  • glycerol

  • long chain alcohols

  • glycerol and fatty acid

  • long chain alcohols and long chain fatty acids


103.

Which of the following organic compounds answers to both iodoform test and Fehling's test ?

  • Ethanol

  • Methanal

  • Ethanal

  • Propanone


104.

In Clemmensen reduction, compound is treated with

  • zinc amalgam + HCI

  • sodium amalgam+ HCI

  • zinc amalgam + HNO4

  • sodium amalgam + HNO3


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105.

The following conversion is known as

CH3-CH=O + H-CH2CHO Dilute NaOH CH3-CHOH-CH2CHO

  • Cannizzaro reaction

  • aldol condensation

  • polymerisation

  • benzoin condensation


106.

The yellow colour in NaCl crystals is due to

  • excitation of electrons in F-centres

  • reflection of light from Cl ions on the surface

  • refraction of light from Na+ ions

  • all of the above


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107.

Assertion: Formic acid reduces mercuric chloride to mercurous chloride on heating, while acetic acid does not.

Reason: Formic acid is a stronger acid than acetic acid.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


B.

If both assertion and reason are true but reason is not the correct explanation of assertion.

Formic acid behaves as reducing agent as it is oxidised to an unstable acid, carbonic acid, which decomposes into CO2 and H2O.

HCOOH + 2HgCl2  Hg2Cl2 + CO2 + 2HCl

HCOOH + Hg2Cl2  CO2 + 2HCl + 2Hg (Black)

Acetic acid remains unaffected by mercuric chloride, as it does not show reducing properties.


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108.

The IUPAC name of the following compound is 

  • propionic anhydride

  • dipropanoic anhydride

  • ethoxy propanoic acid

  • propanoic anhydride


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109.

Acetaldehyde cannot show :

  • iodoform test

  • Lucas test

  • Benedict's test

  • Tollen's test


110.

Which of the following will be most readily dehydrated under acidic conditions ?


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