Chemistry GK · all questions

Metal and Its Compounds
practice.

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402

Questions

20/21

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Q381

Which of the following is used for water purification?

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Q382

In the foarth flotation method, the ore powder is kept in a tank filled with mixture . . . . . . . .

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Q383

When one molecule of lead nitrate is heated, then:

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Q384

Chemical composition of cement is

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Q385

Which of the following do not react with water at all?

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Q386

The element with atomic number . . . . . . . . will form alkaline oxide.

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Q387

Which of the following has the greatest malleability?

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Q388

The atomic mass of Calcium is:

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Q389

Galvanization is a process in which a layer of zinc is plated to protect iron objects from . . . . . . . .

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Q390

Aluminium metal is obtained from

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Q391

Bleaching powder is not used for:

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Q392

What is deposited on iron in the process of galvanisation?

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Q393

Which of the following metals, if kept in open, immediately ignites a fire?

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Q394

Which of the following metals is stored in kerosene oil?

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Q395

Who discovered stainless steel?

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Q396

. . . . . . . . reacts vigorously with water to form slaked lime.

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Q397

When electricity is passed through an aqueous (saline) solution of sodium chloride, it decomposes into which of the following:

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Q398

Match List I with List II.

List-I	List-II
a. Haematite	1. Aluminium
b. Cassiterite	2. Tin
c. Cryolite	3. Silver
d. Argentite	4. Iron

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Q399

Which one among the following chemicals is used as washing soda?

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Q400

The chemical formula of the Plaster of Paris is

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