Practice MCQ Questions and answers on Chemistry-GK Page-1 section-6

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

1.
The most pure form of Carbon among the options is

A. Anthracite

B. Lampblack

C. Graphite

D. Wood Charcoal

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2.
Carbon footprint can be reduced by

A. All of these

B. Recycling waste materials

C. Using energy efficient appliances

D. Commuting by public transport

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3.
Which of the following gases is most toxic ?

A. Carbon dioxide

B. Carbon monoxide

C. Sulphur dioxide

D. Chlorine

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4.
Why is water not suitable for putting out a petrol fire ?

A. The oxygen content of water is isolated by petrol and thus it helps in burning

B. Petrol is too inflammable to be extinguished by water

C. The heat required for combustion of petrol is very low

D. Water, being heavy, slips below petrol which thus remains in contact with air and burns

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5.
Which of the following is used as a lubricant in heavy machines?

A. Bauxite

B. Sulphur

C. Phosphorus

D. Graphite

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6.
Which of the following is used in making smoke bombs?

A. Sulphur

B. Phosphorus

C. Hydrogen

D. Carbon

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7.
Water gas is the mixture of

A. Carbon dioxide and hydrogen

B. Carbon monoxide and nitrogen

C. Carbon monoxide and hydrogen

D. Carbon dioxide and nitrogen

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8.
In electro-refining, the pure metal is deposited on

A. Vessel

B. Electrolyte

C. Cathode

D. Anode

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9.
Which of the following electrodes is used in strongly alkaline solution?

A. Mercury - mercuric oxide electrode

B. Mercury - mercurous sulphate electrode

C. Mercury - mercurous chloride electrode

D. Silver - silver chloride electrode

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10.
The laws of electrolysis are given by

A. Ostwald

B. Faraday

C. Arrhenius

D. Lewis

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Practice MCQ Questions and answers on Chemistry-GK

1. The most pure form of Carbon among the options is

Answer & Solution

2. Carbon footprint can be reduced by

Answer & Solution

3. Which of the following gases is most toxic ?

Answer & Solution

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

Answer & Solution

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

Answer & Solution

6. Which of the following is used in making smoke bombs?

Answer & Solution

7. Water gas is the mixture of

Answer & Solution

8. In electro-refining, the pure metal is deposited on

Answer & Solution

9. Which of the following electrodes is used in strongly alkaline solution?

Answer & Solution

10. The laws of electrolysis are given by

Answer & Solution

Read More Section(Chemistry)

1.
The most pure form of Carbon among the options is

2.
Carbon footprint can be reduced by

3.
Which of the following gases is most toxic ?

4.
Why is water not suitable for putting out a petrol fire ?

5.
Which of the following is used as a lubricant in heavy machines?

6.
Which of the following is used in making smoke bombs?

7.
Water gas is the mixture of

8.
In electro-refining, the pure metal is deposited on

9.
Which of the following electrodes is used in strongly alkaline solution?

10.
The laws of electrolysis are given by