NCERT Class 8 Science-Materials: Metals and Non-Metals[Chemical Properties of Metals & Non-Metals] [NCERT Based General Studies (GS)]: Questions 1 - 7 of 10

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Question 1

Question MCQ▾

Food stuffs with acid components should not be stored in the utensils made of metals because:

Choices

Choice (4)Response

a.

Reaction between food stuff and utensil results into the production of toxic compound

b.

Corrosion of metal utensils takes place

c.

Acid in the food stuff react with utensil of metal

d.

Both a. and c. are correct

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Question 2

Question MCQ▾

Copper reacts with

Choices

Choice (4)Response

a.

Nitric acid

b.

Dilute hydrochloric acid

c.

Sulphuric acid

d.

Both a. and c. are correct

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Question 3

Question MCQ▾

Which metal react violently with water

Choices

Choice (4)Response

a.

Copper

b.

Silver

c.

Sodium

d.

Gold

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Question 4

Question MCQ▾

Metals react with acid and produce

Choices

Choice (4)Response

a.

Nitrogen dioxide

b.

Oxygen

c.

Hydrogen gas

d.

Sulphur dioxide

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Question 5

Question MCQ▾

Phosphorous is stored in water because it is:

Choices

Choice (4)Response

a.

less reactive to water

b.

Do not react with water

c.

More reactive to water

d.

None of the above

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Question 6

Question MCQ▾

Metals when combine with oxygen forms oxides which are

Choices

Choice (4)Response

a.

basic in nature

b.

acidic in nature

c.

Neutral in nature

d.

None of the above

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Question 7

Question MCQ▾

Displacement reaction is:

Choices

Choice (4)Response

a.

Property of element in which a more reactive element displaces less reactive element from its compound in aqueous solution

b.

Synthetic fibre which is used in place of wool

c.

Displacement of one metal with another metal

d.

Reaction in which more reactive metal displaces a less reactive metal from its salt solution.

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