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 Multiple Choice QuestionsMultiple Choice Questions

111.

Pentan-3-one is not obtained from

  • 2, 2-dichloro pentane

  • 3, 3-dichloro pentane

  • pentan-3-ol

  • pent-2-yne


112.

Iodoform test is not given by

  • 2-pentanone

  • ethanol

  • ethanal

  • 3-pentanone


113.

The IUPAC name of 

  • 4-propoxy pentane

  • pentyl-propyl ether

  • 2-propoxy pentane

  • 2-pentoxy propane


114.

Cannizaro's reaction is not given by

  • CCl3CHO

  • CH3CHO

  • HCHO

  • C6H5CHO


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115.

From which group the fats belong?

  • Carboxylic acids

  • Carbonyl

  • Ester

  • Fatty acids


116.

Among the following, the formula of saturated fatty acid is

  • C17H29COOH

  • C17H35COOH

  • C17H31COOH

  • C17H33COOH


117.

2, 2-dichloropropane Aq. KOH  A Clemmensen reduction B, B is

  • propanol

  • propene

  • propane

  • ethane


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118.

Ethyl methyl ketone is obtained by heating calcium salts of

  • formic acid + propionic acid

  • acetic acid + propionic acid

  • acetic acid only

  • acetic acid + methanoic acid


B.

acetic acid + propionic acid

Ethyl methyl ketone is an unsymmetric ketone, so two different acids (in the form of calcium salt) are used. The structure of ethyl methyl ketone is C2H5COCH3

The structure of ethyl methyl ketone shows the presence of 4 carbon atoms, thus the calcium salts must be of acetic acid and propionic acid in order to form C2H5COCH3.

(C2H5COO)2Ca + (CH3COO)2Ca Distill C2H5COCH3 + CaCO3


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119.

CH3COOH when reacts with C,HOH gives a product. The same product is obtained by which reaction?

  • Acetic acid + methanol

  • Acetic anhydride + water

  • Acetic anhydride + ethanol

  • Acetamide + methanol


120.

Glucose on reaction with Fehling solution gives

  • cupric oxide

  • cuprous oxide

  • saccharic acid

  • both (b) and (c)


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