Practice MCQ Questions and answers on Chemistry-GK Page-8 section-2

Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Section 8 Section 9 Section 10 Section 11 Section 12

71.
Sea water can be purified by the process of

A. Distillation

B. Evaporation

C. Filtration

D. Fractional distillation

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72.
A mixture of water and alcohol can be separated by

A. Filtration

B. Evaporation

C. Decantation

D. Distillation

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73.
Which one is a naturally occuring noble gas?

A. Sodium

B. Potassium

C. Argon

D. Boron

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74.
Total number of naturally occurring elements

A. 62

B. 92

C. 98

D. 110

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75.
The coloured discharge tubes for advertisement mainly contain

A. Xenon

B. Argon

C. Helium

D. Neon

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76.
Element 106 was discovered by

A. Rutherford

B. Seaborg

C. Lawrence

D. Kurchatove

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77.
The gas used for filling weather balloons is

A. Helium

B. Hydrogen

C. Air

D. Nitrogen

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78.
The most abundant element is

A. Calcium

B. Silicon

C. Oxygen

D. Nitrogen

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79.
A balloon filled with helium rises in air because

A. Air exerts an upward force on the balloon

B. The balloon is weightless

C. Helium is less dense than air

D. Helium pushes down on the air below the balloon

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80.
Which one of the following is also known as solution ?

A. A compound

B. A homogeneous mixture

C. A heterogeneous mixture

D. A suspension

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Practice MCQ Questions and answers on Chemistry-GK

71. Sea water can be purified by the process of

Answer & Solution

72. A mixture of water and alcohol can be separated by

Answer & Solution

73. Which one is a naturally occuring noble gas?

Answer & Solution

74. Total number of naturally occurring elements

Answer & Solution

75. The coloured discharge tubes for advertisement mainly contain

Answer & Solution

76. Element 106 was discovered by

Answer & Solution

77. The gas used for filling weather balloons is

Answer & Solution

78. The most abundant element is

Answer & Solution

79. A balloon filled with helium rises in air because

Answer & Solution

80. Which one of the following is also known as solution ?

Answer & Solution

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71.
Sea water can be purified by the process of

72.
A mixture of water and alcohol can be separated by

73.
Which one is a naturally occuring noble gas?

74.
Total number of naturally occurring elements

75.
The coloured discharge tubes for advertisement mainly contain

76.
Element 106 was discovered by

77.
The gas used for filling weather balloons is

78.
The most abundant element is

79.
A balloon filled with helium rises in air because

80.
Which one of the following is also known as solution ?