Chemistry MCQ Questions Answers – Practice Set Part 3


51) Elements that show the properties of both metals and non metals are called ?

a)metalloids

b)allotropes

c)alloys

d)colloids

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Option – a)

52) What is used to avoid melting of ice ?

a)Gelatine

b)Butane

c)Methane

d)Any acid

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Option – a)

53) The high reactivity of fluorine is due to ?

a)small size of fluorine atom

b)its high electro negativity

c)availability of d-orbitals

d)strong F – F bond

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Option – b)

54) Which one of the following metals does not react with water to produce Hydrogen?

a)Cadmium

b)Lithium

c)Potassium

d)Sodium

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Option – a)

55) Air is a

a)compound

b)colloid

c)element

d)mixture

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Option – d)

56) What is metallurgy ?

a)process of extracting metal in pure form from its ore.

b)process of creating alloys of metals.

c)process of making metals live long.

d)None of above.

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Option – a)

57) The oxide of Nitrogen used in medicine as anaesthetic is ?

a)Nitrogen pentoxide

b)Nitrous oxide

c)Nitric oxide

d)Nitrogen dioxide

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Option – a)

58) Petroleum is found in ?

a)Marshy land

b)Metamorphic rocks

c)Igneous rock

d)Sedimentary rocks

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Option – d)

59) The major component used in preparation of different types of glasses is :

a)Sodium borate

b)Sodium silicate

c)Silica

d)Calcium silicate

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Option – c)

60) Aspirin is

a)acetyl salicylic acid

b)sodium salicylate

c)methyl salicylate

d)ethyl salicylate

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Option – a)