Question # 1

Blonde hair contains compound of.

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Iron

Copper

titanium

Molybdenum

Chalco-Pyrite is an ore of:

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Copper

Silver

Iron

Aluminium

Metallurgy involves which of the following steps?

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Mining and enrichment

Reduction

Refining and casting.

All of these

How many % age of nitrogen in urea fertilizers?

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40.6

45.6

46.6

50

The number of carbon atoms present in fuel oil.

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14-18

15-18

16-18

17-18

Ammonical brine is prepared by dissolving ammonia gas in.

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NaCl

CaCO₃

CaCl₂

Na₂SO₄

The impurities associated with the minerals are known as:

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Metallurgy

Ores

Gangue

Compounds

Process of heating the concentrated ore to high temperature in excess of air is called.

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Roasting

Smelting

Bessemerization

All

Blast furnace usually used for the metallurgy of.

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Iron

Copper

Aluminum

Both a and b

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Chemistry 10th Class English Medium Unit 16 Online Test MCQs With Answers

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