Chemistry GK · all questions

Metal and Its Compounds
practice.

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Q121

Bauxite is an ore of which of the following metals?

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Q122

Gypsum contains . . . . . . . . . molecules of water in the form of crystalline water.

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Q123

The formula of Calcium hydroxide is . . . . . . . .

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Q124

In order to achieve higher temperatures, electric heating devices usually use . . . . . . . .

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Q125

What is the chemical formula for Sodium Chloride (Salt)?

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Q126

Which of the following metals does not react with oxygen even at high temperatures?

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Q127

Which of the following metals cannot be obtained by reducing property of carbon?

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Q128

Pearl is mainly constituted of

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Q129

Iron is obtained from

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Q130

'German silver' is used to make decorative articles, coinage metal, ornaments etc. The name is given because

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Q131

What is the percentage of oxygen in Al₂(SO₄)₃?

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Q132

What are the two chemicals used in black and white photography?

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Q133

Which compound is produced when magnesium ribbon is burn in air?

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Q134

Which of the following is used in making ointment for curing skin disease?

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Q135

Which process is used for the purification of impure metals such as oxide of metals?

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Q136

Which of the following metals is most malleable?

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Q137

If a metal of an alloy is mercury, it will be called a . . . . . . . .

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Q138

In which of the following processes, zinc oxide is formed, which acts as a protection layer and prevents corrosion?

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Q139

Which one of the following is used for water softening?

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Q140

Which one of the following pairs of metals constitutes the lightest metal and the heaviest densest metal, respectively?

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