Metals, Non Metals, Minerals, Ores, Properties, Uses - Category Wise Question And Answer Practice Test With Solutions

Question : 6

Pure gold is –

a) 20 carats

b) 24 carats

c) 22 carats

d) 18 carats

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Question : 7

Which of the following have low melting and boiling points?

a) Iron

b) Phosphorus

c) Sodium

d) Both (b) and (c)

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Question : 8

Which of the following statement regarding non-metals is true?

a) Non-metals are non-lustrous with dull apppearence. Graphite, an allotrope of carbon and iodine have shining lustrous surfaces.

b) Non-metals are of two types only solids and gases.

c) Non-metals reacts with oxygen to form basic oxides generally.

d) Non-metals replace hydrogen from acids.

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Question : 9 [BPSC (Pre) 1995]

Heaviest metal of the following is made of

a) Uranium

b) Aluminium

c) Copper

d) Silver

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Question : 10

Which of the following is not an ore?

a) Zinc blende

b) Bauxite

c) Malachite

d) Pig iron

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