general science

Chemistry MCQ Questions and Answers page - 10

1.

The temperature of oxy-acetylene flame is around

Answer/ Hint      

Answer : B

Explanation :

2.

The Refrigerant  ‘FREON’ is

Answer/ Hint      

Answer : B

Explanation :

3.

Which of the following produces highest amount of energy upon oxidation  ?

Answer/ Hint      

Answer : B

Explanation :

4.

Non-stick kitchen-wares are coated with

Answer/ Hint      

Answer : C

Explanation :

5.

The fiber least prone to catch fire is

Answer/ Hint      

Answer : C

Explanation :

6.

Which one of the following statements is not correct ?

Vulcanisation of rubber makes it

Answer/ Hint      

Answer : A

Explanation :

7.

The material known in commerce as Terylene is a

Answer/ Hint      

Answer : A

Explanation :

8.

The chemical used in embalming biological materials is

Answer/ Hint      

Answer : A

Explanation :

9.

Commercial Vaseline is derived from

Answer/ Hint      

Answer : D

Explanation :

10.

The common refrigerant in domestic refrigerator is

Answer/ Hint      

Answer : D

Explanation :

11.

Which of the following is used for refrigeration  ?

Answer/ Hint      

Answer : C

Explanation :

12.

Which of the following is used to denature ethanol  ?

Answer/ Hint      

Answer : A

Explanation :

13.

The main constituent of natural gas is

Answer/ Hint      

Answer : A

Explanation :

14.

Urea is a

Answer/ Hint      

Answer : C

Explanation :

15.

The basic chemical building block of natural rubber obtained from trees is

Answer/ Hint      

Answer : A

Explanation :

16.

The name of plastic polymer from which combs, toys, bowls etc., can be made, is

Answer/ Hint      

Answer : B

Explanation :

17.

Submarines move under water. They have engines that run on

Answer/ Hint      

Answer : B

Explanation :

18.

Molasses a by-product in the manufacture of sugar, is converted into

Answer/ Hint      

Answer : A

Explanation :

19.

Which of these acids is not organic in origin  ?

Answer/ Hint      

Answer : B

Explanation :

20.

The Fungus which is used in the alcohol industry is

Answer/ Hint      

Answer : C

Explanation :

21.

The main source of Naphthalene is

Answer/ Hint      

Answer : C

Explanation :

22.

The acid present in red ants is

Answer/ Hint      

Answer : D

Explanation :

23.

Muscle fatigue is caused by the accumulation of  :

Answer/ Hint      

Answer : B

Explanation :

24.

The natural resource, known as black gold is

Answer/ Hint      

Answer : A

Explanation :

25.

Spirit in contact with body gives cool sensation because it is  :

Answer/ Hint      

Answer : C

Explanation :

26.

Alcoholic (- OH) group can be identified by  :

Answer/ Hint      

Answer : C

Explanation :

27.

Natural rubber is the polymer of  :

Answer/ Hint      

Answer : A

Explanation :

28.

Which of the following is used to increase the anti-knocking property of petrol  ?

Answer/ Hint      

Answer : B

Explanation :

29.

Bakelite is a copolymer of phenol and

Answer/ Hint      

Answer : A

Explanation :

30.

Wood spirit is

Answer/ Hint      

Answer : A

Explanation :

31.

Which of the following processes is used for the production of Biodiesel   ?

Answer/ Hint      

Answer : C

Explanation :

32.

“Fire-fighting clothes”  are made from

Answer/ Hint      

Answer : B

Explanation :

33.

Which type of fire extinguisher is used for petroleum fire  ?

Answer/ Hint      

Answer : A

Explanation :

34.

Why is water not suitable for putting out a petrol fire  ?

Answer/ Hint      

Answer : D

Explanation :

35.

Heavy metal pollution of water is caused by   :

Answer/ Hint      

Answer : A

Explanation :

36.

The next higher homologue of  C6H14  is

Answer/ Hint      

Answer : D

Explanation :

37.

Substance used as an antifreeze in radiators of automobiles is  :

Answer/ Hint      

Answer : A

Explanation :

38.

Chloroform can be used as

Answer/ Hint      

Answer : B

Explanation :

39.

In its reaction with silver nitrate,  C2H2  shows

Answer/ Hint      

Answer : D

Explanation :

40.

Benzene cannot undergo  :

Answer/ Hint      

Answer : C

Explanation :

41.

The polymer obtained by the condensation of hexamethylene diamine and adipic acid is  :

Answer/ Hint      

Answer : A

Explanation :

42.

In organic compounds, nitrogen is estimated by

Answer/ Hint      

Answer : D

Explanation :

43.

What is the second largest component in milk  ?

Answer/ Hint      

Answer : A

Explanation :

44.

Bayer’s reagent is

Answer/ Hint      

Answer : A

Explanation :

45.

Choose the incorrect statement pertaining to organic compounds

Answer/ Hint      

Answer : C

Explanation :

46.

Iodine value is used to estimate

Answer/ Hint      

Answer : C

Explanation :

47.

The fat of a common mussel-secretes a sticky glue that can be used to make heart implants. The unique chemical compound present in the glue is  :

Answer/ Hint      

Answer : D

Explanation :

48.

Ethanol containing  5%  water is known as  :

Answer/ Hint      

Answer : C

Explanation :

49.

The antiseptic compound present in Dettol is

Answer/ Hint      

Answer : B

Explanation :

50.

An example of heterocyclic compound is

Answer/ Hint      

Answer : B

Explanation :

51.

Which is not an anaesthetic agent in surgical operations  ?

Answer/ Hint      

Answer : D

Explanation :

52.

Rectified spirit is  :

Answer/ Hint      

Answer : A

Explanation :

53.

Nylon is made up of  :

Answer/ Hint      

Answer : A

Explanation :

54.

Sweat contains water and  ____________ .

Answer/ Hint      

Answer : C

Explanation :

55.

Citric acid is present in free form in

Answer/ Hint      

Answer : D

Explanation :

56.

The quality of petrol is expressed in terms of

Answer/ Hint      

Answer : C

Explanation :

57.

Vulcanized rubber contains sulphur

Answer/ Hint      

Answer : B

Explanation :

58.

The first organic compound synthesised in the laboratory was

Answer/ Hint      

Answer : A

Explanation :

59.

Chemical name of Gammaxane is

Answer/ Hint      

Answer : D

Explanation :

60.

What happens when a drop of glycerol is added to crushed  KMnO4  spread on a paper  ?

Answer/ Hint      

Answer : B

Explanation :

61.

An important green-house gas other that methane being produced from the agricultural fields is

Answer/ Hint      

Answer : A

Explanation :

62.

Which of the following is the strongest base in aqueous solution  ?

Answer/ Hint      

Answer : A

Explanation :

63.

Which one of the following vegetable oils is used in the manufacture of paints  ?

Answer/ Hint      

Answer : C

Explanation :

64.

Which is known as carbolic acid ?

Answer/ Hint      

Answer : A

Explanation :

65.

What is a Bakelite  ?

Answer/ Hint      

Answer : D

Explanation :

66.

Adding  Cl2  to benzene in the presence of  AlCl3  is an example of  :

Answer/ Hint      

Answer : B

Explanation :

67.

Which of the following is used to make light weight, but strong plastic  ?

Answer/ Hint      

Answer : A

Explanation :

68.

Which of the following substance’s smell is similar to Ethanoic acid  ?

Answer/ Hint      

Answer : C

Explanation :

69.

Which of the following is not a natural source of hydrocarbon  ?

Answer/ Hint      

Answer : D

Explanation :

70.

Terylene is a condensation polymer of ethylene glycol and which acid  ?

Answer/ Hint      

Answer : D

Explanation :

71.

Trinitrotoluene is

Answer/ Hint      

Answer : D

Explanation :

72.

Which of the following is a natural polymer  ?

Answer/ Hint      

Answer : D

Explanation :

73.

Iodex, a pain relief balm, has the smell of  ___________ .

Answer/ Hint      

Answer : A

Explanation :

74.

Which of the following fuels causes minimum environmental pollution  ?

Answer/ Hint      

Answer : C

Explanation :

75.

Vinegar is  ____________ .

Answer/ Hint      

Answer : D

Explanation :

76.

Formic acid is produced by

Answer/ Hint      

Answer : C

Explanation :

77.

Nylon threads are made of

Answer/ Hint      

Answer : A

Explanation :

78.

Synthetic detergents are prepared from

Answer/ Hint      

Answer : C

Explanation :

79.

Glycol is used to manufacture which of the following  ?

Answer/ Hint      

Answer : C

Explanation :

80.

Which of the following is used as non-stick coating for cooking utensils  ?

Answer/ Hint      

Answer : D

Explanation :

81.

Malathion is  a/an

Answer/ Hint      

Answer : A

Explanation :

82.

Ethylene is a  ____________  molecule.

Answer/ Hint      

Answer : D

Explanation :

83.

LPG is a mixture of  __________  .

Answer/ Hint      

Answer : B

Explanation :

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Chemistry MCQ Questions and Answers page - 10