organic chemistry - Category wise Question and Answer Practice Test with Solutions

organic chemistry PRACTICE TEST [3 - EXERCISES]

objective questions set 1

set 2

set 3

Question : 6

On the basis of following features identify the correct option A. Drinks containing ethanol B. These drinks are major source of income to government

a) Soft drinks

b) Carbonated beverages

c) Alcoholic beverages

d) Rectified spirit

Answer: (c)

Question : 7 [IAS Prelim]

Which one of the following is the correct sequence in increasing order of molecular weights of the hydrocarbons?

a) Propane, butane, ethane and methane

b) Butane, ethane, propane and methane

c) Methane, ethane, propane and butane

d) Butane, propane, ethane and methane

Answer: (c)

Question : 8

The functional group present in CH3COOC2H5 is

a) ester

b) aldehydic

c) ketonic

d) carboxylic

Answer: (a)

Question : 9

Hydrogenation of oils involves

  1. saturation of unsaturated fatty acids
  2. reaction with hydrogen in presence of nickel
  3. conversion into saturated fatty acids
  4. driving off the impurities in oil by hydrogen gas

a) 2, 3 and 4

b) 1, 2 and 3

c) 1, 2 and 4

d) 1, 3 and 4

Answer: (b)

Oils (generally liquid) are glycerides with a larger proportion of unsaturated fatty acids than fats (generally solid or semisolid).

Hence oils, when treated with hydrogen in presence of finely divided nickel as a catalyst, add hydrogen across the carbon-carbon double bonds of the unsaturated acid components to form saturated glycerides which are solid at room temperature.

Question : 10

General formula of alkyne is

a) CnH2n–2

b) CnH2n

c) CnH2n+2

d) CnHn

Answer: (a)

IMPORTANT general science mcq EXERCISES

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1704 organic chemistry based general science mcq set 3 question answer with explanation pdf
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