general science

Chemistry MCQ Questions and Answers page - 5

1.

Nitric acid does not react with

Answer/ Hint      

Answer : A

Explanation :

2.

In arc welding. Argon is used because of its

Answer/ Hint      

Answer : A

Explanation :

3.

Inert gases are

Answer/ Hint      

Answer : C

Explanation :

4.

The most pure form of Carbon among the options is

Answer/ Hint      

Answer : C

Explanation :

5.

Calcium salts used as fertilizer is :

Answer/ Hint      

Answer : D

Explanation :

6.

Which one of the following forms of phosphorus is most reactive ?

Answer/ Hint      

Answer : B

Explanation :

7.

The manufacturing of iron from iron-ore involves the process of

Answer/ Hint      

Answer : B

Explanation :

8.

Bridgmanite is

Answer/ Hint      

Answer : C

Explanation :

9.

Iron and manganese present as pollutants in water cannot be removed by  __________

Answer/ Hint      

Answer : B

Explanation :

10.

Of the following commonly used materials, the one that is not an alloy is

Answer/ Hint      

Answer : D

Explanation :

11.

Bronze is an alloy of

Answer/ Hint      

Answer : A

Explanation :

12.

Chemical composition of cement is

Answer/ Hint      

Answer : B

Explanation :

13.

Cinnabar is an ore/mineral of

Answer/ Hint      

Answer : D

Explanation :

14.

Which among the following is not a characteristic of transition metals ?

Answer/ Hint      

Answer : A

Explanation :

15.

Malachite is an ore/mineral of

Answer/ Hint      

Answer : D

Explanation :

16.

Sodium calcium silicate is called  _________ .

Answer/ Hint      

Answer : C

Explanation :

17.

Which of the following elements has the lowest melting point ?

Answer/ Hint      

Answer : C

Explanation :

18.

Atomic number of which of the following elements is greater than that of Fluorine ?

Answer/ Hint      

Answer : A

Explanation :

19.

Which of the following gas is used in bulb ?

Answer/ Hint      

Answer : D

Explanation :

20.

Chlorine gas is a major component of which of the following ?

Answer/ Hint      

Answer : B

Explanation :

21.

What is Brine solution ?

Answer/ Hint      

Answer : A

Explanation :

22.

pH scale ranges from  __________ .

Answer/ Hint      

Answer : C

Explanation :

23.

In which of the following silicon is not used ?

Answer/ Hint      

Answer : D

Explanation :

24.

Which among the following is added to commercial nitric acid to make it coloured ?

Answer/ Hint      

Answer : D

Explanation :

25.

Bleaching action of Chlorine is due to which reaction ?

Answer/ Hint      

Answer : A

Explanation :

26.

In Aqua Regia which two acids are mixed in radio of  1 : 3  ?

Answer : D

Explanation :

27.

Which of the following are the main components of stainless steel ?

Answer/ Hint      

Answer : C

Explanation :

28.

Which of the following metal has the lowest density ?

Answer/ Hint      

Answer : D

Explanation :

29.

Which among the following metal is used for galvanization ?

Answer/ Hint      

Answer : A

Explanation :

30.

What is dry ice ?

Answer/ Hint      

Answer : A

Explanation :

31.

Which of the following metal (shown by its symbol) is generally used for making filaments of bulb  ?

Answer/ Hint      

Answer : D

Explanation :

32.

Which of the following is an Inert Gas ?

Answer/ Hint      

Answer : D

Explanation :

33.

Ozone is an  ________  of oxygen.

Answer/ Hint      

Answer : A

Explanation :

34.

Which of the following is an ore of Aluminium ?

Answer/ Hint      

Answer : B

Explanation :

35.

What is the common characteristic of the elements of the same group in the periodic table ?

Answer/ Hint      

Answer : A

Explanation :

36.

Which of the following cannot be beaten into Sheets ?

Answer/ Hint      

Answer : C

Explanation :

37.

In an acid base reaction which product is produced along with a salt ?

Answer/ Hint      

Answer : D

Explanation :

38.

What is the process of melting also called ?

Answer/ Hint      

Answer : A

Explanation :

39.

Fire extinguishers emit which gas ?

Answer/ Hint      

Answer : C

Explanation :

40.

What is formed when Magnesium is burnt ?

Answer/ Hint      

Answer : C

Explanation :

41.

________  is obtained by evaporation of sea.

Answer/ Hint      

Answer : C

Explanation :

42.

A  ________  thread is actually stronger than a steel wire.

Answer/ Hint      

Answer : D

Explanation :

43.

The process of depositing a layer of any desired metal on another material by means of electricity is called  ________ .

Answer/ Hint      

Answer : A

Explanation :

44.

What is formed when Carbon Dioxide is passed through Lime Water ?

Answer/ Hint      

Answer : B

Explanation :

45.

The salt concentration (measured as salinity in parts per thousand), is greater than  ________ % in hypersaline lagoons.

Answer/ Hint      

Answer : B

Explanation :

46.

What is the reason for the use of Sodium thiosulphate in photography ?

Answer/ Hint      

Answer : B

Explanation :

47.

Heavy water is made by  ________ .

Answer/ Hint      

Answer : C

Explanation :

48.

Which of the following statements is true ?

Answer/ Hint      

Answer : D

Explanation :

49.

Which one of the following is not a Ferrous mineral ?

Answer/ Hint      

Answer : D

Explanation :

50.

An amalgam of metal has which other element ?

Answer/ Hint      

Answer : D

Explanation :

51.

Which of the following metal is the heaviest ?

Answer/ Hint      

Answer : D

Explanation :

52.

Which among the following acids is used in Lead storage batteries ?

Answer/ Hint      

Answer : C

Explanation :

53.

Which metal remains in liquid form at normal temperature ?

Answer/ Hint      

Answer : B

Explanation :

54.

Which of the following is not a noble gas ?

Answer/ Hint      

Answer : C

Explanation :

55.

Which element has maximum presence in the Sun ?

Answer/ Hint      

Answer : A

Explanation :

56.

Substances which are generally bitter in taste and feel soapy on touching are known as  ________ .

Answer/ Hint      

Answer : B

Explanation :

57.

A substance acquired in the form of brownish film on a piece of iron left in the open for some time is  ________ .

Answer/ Hint      

Answer : A

Explanation :

58.

Which among the following elements comes under metalloids ?

Answer/ Hint      

Answer : A

Explanation :

59.

Which of the following metal is most ductile in nature ?

Answer/ Hint      

Answer : C

Explanation :

60.

The unique ability of carbon to form bonds with other atoms of carbon is called as  ________ .

Answer/ Hint      

Answer : B

Explanation :

61.

During Galvanization, which metal is used for coasting iron and steel objects, preventing them from rusting ?

Answer/ Hint      

Answer : A

Explanation :

62.

In the modern periodic table metals, metalloids and non metals are found in which block ?

Answer/ Hint      

Answer : B

Explanation :

63.

Cinnabar is ore of which of the following ?

Answer/ Hint      

Answer : C

Explanation :

64.

Mass  of a hydrogen atom is how many time the mass of an electron ?

Answer/ Hint      

Answer : C

Explanation :

65.

In Modern Periodic Table, while moving left to right across a period, the metallic character  _________ .

Answer/ Hint      

Answer : B

Explanation :

66.

Which of the following metal remains in liquid form at room temperature ?

Answer/ Hint      

Answer : B

Explanation :

67.

Which is a base metal of amalgam alloy ?

Answer/ Hint      

Answer : B

Explanation :

68.

Which of the following is the structure of graphite ?

Answer/ Hint      

Answer : B

Explanation :

69.

Which is NOT an inorganic gas ?

Answer/ Hint      

Answer : C

Explanation :

70.

Which of the following shows exception to the Octet rule ?

Answer/ Hint      

Answer : B

Explanation :

71.

Filament of electric bulbs are generally made of  _________ .

Answer/ Hint      

Answer : B

Explanation :

72.

Which method is used to protect iron rusting ?

Answer/ Hint      

Answer : B

Explanation :

73.

Brass is an alloy of which of the following metals ?

Answer/ Hint      

Answer : B

Explanation :

74.

Solder is an alloy of which of the following metals ?

Answer/ Hint      

Answer : D

Explanation :

75.

Iron rusts because of  ________  reaction.

Answer/ Hint      

Answer : D

Explanation :

76.

Which alloy is made of essentially copper and tin ?

Answer/ Hint      

Answer : B

Explanation :

77.

Incomplete combustion of a fuel gives poisonous  ________  gas.

Answer/ Hint      

Answer : C

Explanation :

78.

What is the value of pH of a neutral solution ?

Answer/ Hint      

Answer : A

Explanation :

79.

Which base is generally found in soaps ?

Answer/ Hint      

Answer : C

Explanation :

80.

Which of the following metal is most reactive ?

Answer/ Hint      

Answer : A

Explanation :

<< Previous
Chemistry MCQ Questions and Answers page - 5
Next >>