Chemistry Multiple Choice Questions Set – 30

Here you will find GK MCQ Questions for Chemistry GK with Answers PDF Free Download based on the important concepts and topics given in the textbook as per new exam pattern. This may assist you to understand and check your knowledge about the Chemistry GK. Students also can take a free test of the Multiple Choice Questions of Chemistry GK. Each question has four options followed by the right answer.

Question 1.

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

A. FeCO3
B. Fe2O3
C. Fe3O4
D. FeS2

Ans: B. Fe2O3

Question 2.

Which of the following is used in welding broken pieces of iron rails and machine parts?

A. Aluminium sulphate
B. Solder
C. Aluminium powder
D. None of the above

Ans: C. Aluminium powder

Question 3.

Which of the following elements is not present in stainless steel?

A. Iron
B. Tungsten
C. Chromium
D. Nickel

Ans: B. Tungsten

Question 4.

Food cans are coated with tin and not with zinc because

A. Zinc is costlier than tin
B. Zinc has a higher melting point than tin
C. Zinc is more reactive than tin
D. Zinc is less reactive than tin

Ans: C. Zinc is more reactive than tin

Question 5.

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

A. Steel
B. Brass
C. Bronze
D. Copper

Ans: D. Copper

Question 6.

Which one of the following minerals is found in pure form?

A. Iron
B. Copper
C. Bauxite
D. Manganese

Ans: B. Copper

Ans: B. Copper

Question 7.

Cinnabar is an ore/mineral of

A. Lead
B. Manganese
C. Molybdenum
D. Mercury

Ans: D. Mercury

Question 8.

The manufacture of iron from iron ore involves the process of

A. Oxidation
B. Reduction
C. Fractional distillation
D. Electrolysis

Ans: B. Reduction

Question 9.

What is the principal ore of aluminium ?

A. Dolomite
B. Copper
C. Lignite
D. Bauxite

Ans: D. Bauxite

Question 10.

The percentage of carbon in cast iron is :

A. 0.01 to 0.25
B. 0.5 to 1.5
C. 6 to 8
D. 3 to 5

Ans: D. 3 to 5

Question 11.

A. Oxidation
B. Reduction
C. Electrolysis
D. Fractional distillation

Ans: B. Reduction

Question 12.

Burning pyrites ore gives out

A. Carbon dioxide gas
B. Sulphur dioxide gas
C. Nitrogen dioxide gas
D. Nitric oxide gas

Ans: B. Sulphur dioxide gas

Question 13.

Brass is a solution of molten copper in

A. Solid zinc
B. Molten zinc
C. Gaseous zinc
D. Molten tin

Ans: B. Molten zinc

Question 14.

The important ore of aluminium is

A. Bauxite
B. Cryolite
C. Fluorspar
D. Haematite

Ans: A. Bauxite

Question 15.

Which one of the following pairs is not correctly matched?

A. Haematite : Copper
B. Bauxite : Aluminium
C. Monazite : Thorium
D. Pitchblende : Uranium

Ans: A. Haematite : Copper

Chemistry GK MCQs all set

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