Chemistry Multiple Choice Questions Set – 29

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.

Froth floatation process to concentrate the minerals is applicable to

A. Calamine
B. Chalcopyrites
C. Bauxite
D. Haematite

Ans: B. Chalcopyrites

Question 2.

Which one of the following is not a characteristic feature of alloys?

A. Compounds
B. Mixtures
C. Solutions
D. Homogeneous systems

Ans: D. Homogeneous systems

Question 3.

The purest form of Iron is :

A. Cast iron
B. Steel
C. Pig iron
D. Wrought iron

Ans: D. Wrought iron

Question 4.

Which one of the following mineral does not contain oxygen ?

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

Ans: C. Cryolite

Question 5.

Chemical name of Gammaxane is

A. Toluene
B. Chloro benzene
C. Aniline
D. Benzene hexachloride

Ans: B. Chloro benzene

Question 6.

Galena is a mineral of

A. Iron
B. Gold
C. Lead
D. Calcium

Ans: C. Lead

Question 7.

Which one of the following contains maximum percentage of carbon ?

A. Cast iron
B. Stainless steel
C. Wrought iron
D. High speed steel

Ans: A. Cast iron

Question 8.

Which mineral is the ore of aluminium ?

A. Haematite
B. Bauxite
C. Magnetite
D. Siderite

Ans: B. Bauxite

Question 9.

Epsom salt is used

A.As purgative
B. In softening water
C. In paper industry
D. In making tooth paste

Ans: A.As purgative

Question 10.

The iron ore which contains 72% of iron is :

A. Magnetite
B. Limonite
C. Haematite
D. Siderite

Ans: A. Magnetite

Question 11.

Stainless steel is an alloy of

A. Chromium and carbon
B. Chromium, carbon and iron
C. Chromium and iron
D. Carbon and iron

Ans: B. Chromium, carbon and iron

Question 12.

Which of the following is a metallic ore ?

A. Mica
B. Quartz
C. Feldspar
D. Galena

Ans: D. Galena

Question 13.

The metal extracted from Bauxite is :

A. Silver
B. Copper
C. Manganese
D. Aluminium. Galena

Ans: D. Aluminium. Galena[

Question 14.

Bauxite is an alloy of which of the following metals ?

A. Aluminium
B. Silver
C. Tin
D. Iron

Ans: A. Aluminium

Question 15.

Iron is extracted from

A. Cinnabar
B. Haematite
C. Bauxite
D. Dolomite[

Ans: B. Haematite

Question 16.

Magnalium is an alloy of

A. Aluminium and Magnesium
B. Magnesium and Tin
C. Aluminium and Zinc
D. Manganese and Magnesium

Ans: A. Aluminium and Magnesium

Question 17.

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

A. Haemetite
B. Magnetite
C. Limnonite
D. None of these

Ans: A. Haemetite

Question 18.

Hard steel contains

A. 2 to 5 per cent carbon
B. 0.5 to 1.5 per cent carbon
C. 0.1 to 0.4 per cent carbon
D. 0.01 to 0.04 per cent carbon

Ans: B. 0.5 to 1.5 per cent carbon

Question 19.

Which is the purest form of iron?

A. Steel
B. Cast iron
C. Pig iron
D. Wrought iron

Ans: D. Wrought iron

Question 20.

Magnetite is

A. Fe2O3
B. Fe3O4
C. FeCO3
D. 2Fe2O3. 3H2O

Ans: B. Fe3O4

Chemistry GK MCQs all set

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