general science

Chemistry MCQ Questions and Answers page - 2

1.

In a reaction, what is the loss of hydrogen by substance called as ?

Answer/ Hint      

Answer : B

Explanation :

2.

Which of the following is an example of colloidal solution of liquid in solid ?

Answer/ Hint      

Answer : C

Explanation :

3.

Which of the following is a heterogeneous mixture ?

Answer/ Hint      

Answer : B

Explanation :

4.

When a substance loses oxygen during a reaction, it is called  _________ .

Answer/ Hint      

Answer : B

Explanation :

5.

Which element is most electronegative among Arsenic, Nitrogen and Phosphorus ?

Answer/ Hint      

Answer : A

Explanation :

6.

Which of the following can be defined as the smallest particle of an element that is capable of an independent existence ?

Answer/ Hint      

Answer : D

Explanation :

7.

In which of the following states maximum iron ore is found ?

Answer/ Hint      

Answer : B

Explanation :

8.

Where does the oxygen that keeps us alive come from ?

Answer/ Hint      

Answer : D

Explanation :

9.

The three element most needed in common fertilisers are :

Answer/ Hint      

Answer : B

Explanation :

10.

Which of the following metals pollutes the air of a city having large number of automobiles ?

Answer/ Hint      

Answer : C

Explanation :

11.

The substance which does not expand on going from liquid state to solid state is

Answer/ Hint      

Answer : D

Explanation :

12.

Which of the following is used as a lubricant in heavy machines ?

Answer/ Hint      

Answer : D

Explanation :

13.

The anode in a dry cell consists of

Answer/ Hint      

Answer : B

Explanation :

14.

Galvanization is the :

Answer/ Hint      

Answer : A

Explanation :

15.

What is the most commonly used substance in fluorescent tubes ?

Answer/ Hint      

Answer : C

Explanation :

16.

Bronze is an alloy of

Answer/ Hint      

Answer : C

Explanation :

17.

Which one of the following metals is used to galvanise iron ?

Answer/ Hint      

Answer : C

Explanation :

18.

Which of the following is not a precious/semi-precious stone ?

Answer/ Hint      

Answer : C

Explanation :

19.

Which among the following metals provides amphoteric oxide ?

Answer/ Hint      

Answer : C

Explanation :

20.

Humburger effect is otherwise known as

Answer/ Hint      

Answer : C

Explanation :

21.

Which among the following elements is found in maximum percentage in the human body ?

Answer/ Hint      

Answer : D

Explanation :

22.

Which among the following is pure matter ?

Answer/ Hint      

Answer : A

Explanation :

23.

Which among the following coal contains 90 per cent of carbon ?

Answer/ Hint      

Answer : A

Explanation :

24.

Quartz is made of

Answer/ Hint      

Answer : D

Explanation :

25.

Which of the following is ozone depleting pesticide ?

Answer/ Hint      

Answer : C

Explanation :

26.

Global warming is mainly due to accumulation of

Answer/ Hint      

Answer : C

Explanation :

27.

The most suitable vessel for storing concentrated sulphuric acid is

Answer/ Hint      

Answer : C

Explanation :

28.

Formation of ozone hole is maximum over

Answer/ Hint      

Answer : C

Explanation :

29.

Which of the following gases will effuse out of football bladder most quickly ?

Answer/ Hint      

Answer : B

Explanation :

30.

Which of the following alkali metals has highest specific heat ?

Answer/ Hint      

Answer : D

Explanation :

31.

In which of the following substances all carbon atoms are quaternary in nature ?

Answer/ Hint      

Answer : B

Explanation :

32.

The ratio of pure gold in 18 carat gold is :

Answer/ Hint      

Answer : B

Explanation :

33.

Dimond is harder than graphite because of :

Answer/ Hint      

Answer : A

Explanation :

34.

What is the element required for solar energy conversion ?

Answer/ Hint      

Answer : C

Explanation :

35.

Which of the following type of coal has the lowest proportion of volatile matter ?

Answer/ Hint      

Answer : D

Explanation :

36.

Which of the following is used as filler in tyre of rubber ?

Answer/ Hint      

Answer : A

Explanation :

37.

Which of the following alloy is used in making magnet ?

Answer/ Hint      

Answer : C

Explanation :

38.

Cloud is a colloidal dispersion of

Answer/ Hint      

Answer : D

Explanation :

39.

Which of the purest form of iron ?

Answer/ Hint      

Answer : D

Explanation :

40.

Which of the following merals from an amalgam with other metals ?

Answer/ Hint      

Answer : D

Explanation :

41.

Which of the following is used in making smoke bombs ?

Answer/ Hint      

Answer : D

Explanation :

42.

German silver is an alloy of

Answer/ Hint      

Answer : C

Explanation :

43.

A metal is exposed to the atmosphere for sometime. It becomes coated with green carbonate. The metal must be

Answer/ Hint      

Answer : B

Explanation :

44.

Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ?

Answer/ Hint      

Answer : D

Explanation :

45.

Metal are good conductors, because

Answer/ Hint      

Answer : A

Explanation :

46.

The first metal used by a man was

Answer/ Hint      

Answer : A

Explanation :

47.

Drinking soda is

Answer/ Hint      

Answer : B

Explanation :

48.

The cathode of a lead storage battery is made up of

Answer/ Hint      

Answer : B

Explanation :

49.

Among the following iron ores, the highest percentage of iron content is found to

Answer/ Hint      

Answer : A

Explanation :

50.

Pasteurisation of milk means –

Answer/ Hint      

Answer : B

Explanation :

51.

Aluminium can be purified by

Answer/ Hint      

Answer : C

Explanation :

52.

Impure camphor is purified by

Answer/ Hint      

Answer : A

Explanation :

53.

Greenhouse effect is caused by

Answer/ Hint      

Answer : B

Explanation :

54.

Type metal used in printing press is an alloy of

Answer/ Hint      

Answer : B

Explanation :

55.

Diamonds are glittering and attractive because light incident on them undergoes

Answer/ Hint      

Answer : B

Explanation :

56.

Water can be separated from alcohol water mixture by

Answer/ Hint      

Answer : C

Explanation :

57.

The gas used for filling weather balloons is

Answer/ Hint      

Answer : A

Explanation :

58.

Hydrogen is not found in atmosphere because

Answer/ Hint      

Answer : B

Explanation :

59.

What material is used to make electric heater coil ?

Answer/ Hint      

Answer : D

Explanation :

60.

The major constituent of air is

Answer/ Hint      

Answer : A

Explanation :

61.

Rusting of iron takes place due to

Answer/ Hint      

Answer : A

Explanation :

62.

The purity of gold is expressed in carats. The purest form of gold is

Answer/ Hint      

Answer : A

Explanation :

63.

The lustre of the metals is be cause of

Answer/ Hint      

Answer : C

Explanation :

64.

One of the following is used to dissolve noble metals. That is

Answer/ Hint      

Answer : D

Explanation :

65.

Percentage of carbon in steel ranges from

Answer/ Hint      

Answer : A

Explanation :

66.

The most abundant inter gas in the atmosphere is

Answer/ Hint      

Answer : C

Explanation :

67.

Which metal is extracted from sea water ?

Answer/ Hint      

Answer : B

Explanation :

68.

Percentage of lead in lead pencils is

Answer/ Hint      

Answer : A

Explanation :

69.

The gas which turns into liquid at the lowest temperature among the following is

Answer/ Hint      

Answer : A

Explanation :

70.

Gunpowder consists of a mixture of

Answer/ Hint      

Answer : C

Explanation :

71.

Which gas does not form the part of atmosphere ?

Answer/ Hint      

Answer : C

Explanation :

72.

White coal is

Answer/ Hint      

Answer : A

Explanation :

73.

What is the maximum Water Vapour content in the atmosphere ?

Answer/ Hint      

Answer : B

Explanation :

74.

The amount of chlorine available in water after disinfection is called as

Answer/ Hint      

Answer : B

Explanation :

75.

Photooxidation process is initiated by

Answer/ Hint      

Answer : A

Explanation :

76.

Ultraviolet radiation striking the earth is due to the depletion of

Answer/ Hint      

Answer : C

Explanation :

77.

Major gaseous pollutant of the thermal power station is

Answer/ Hint      

Answer : D

Explanation :

78.

The tip of the match-stick contains

Answer/ Hint      

Answer : C

Explanation :

79.

Which of the following substance is highly plastic ?

Answer/ Hint      

Answer : D

Explanation :

80.

Carbon monoxide is an inflammable gas. Which one of the followings is also inflammable ?

Answer/ Hint      

Answer : D

Explanation :

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