Class 10 Chemistry MCQs - Chapter 5

Chemical Industries Quiz Questions and Answers PDF - 11

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Chemical Industries Questions & Answers PDF Download: MCQ Quiz 11

MCQ 51: The process of smelting involves the

A) reduction of metal oxides

B) oxidation of minerals

C) oxidation of metals

D) melting of metals

MCQ 52: Which of the following is used as cylinder gas for cooking?

A) Liquefied petroleum gas (LPG)

B) petrol

C) naphtha

D) kerosene

MCQ 53: Third step of metallurgy is

A) crushing, grinding or pulverizing of the ore

B) concentration of the ore

C) extraction of metal

D) refining of metal

MCQ 54: Which of the following is used as a chemical feedstock for making drugs, plastics, and other chemicals?

A) Liquid Petroleum Gas (LPG)

B) petrol

C) naphtha

D) kerosene

MCQ 55: Number of carbon atoms per molecule in Petrol is

A) 1 to 4

B) 5 to 10

C) 8 to 12

D) 10 to 16

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