Class 10 Chemistry Certification MCQs – Practice Test 11 (Chapter 5)

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Chemical Industries Quiz PDF Download – Practice Test 11

MCQ 51: The process of smelting involves the:

reduction of metal oxides
oxidation of minerals
oxidation of metals
melting of metals

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

Liquefied petroleum gas (LPG)
petrol
naphtha
kerosene

MCQ 53: Third step of metallurgy is:

crushing, grinding or pulverizing of the ore
concentration of the ore
extraction of metal
refining of metal

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

Liquid Petroleum Gas (LPG)
petrol
naphtha
kerosene

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

1 to 4
5 to 10
8 to 12
10 to 16

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