Materials: Metals and Non-Metals-Chemical Properties of Metals & Non-Metals (CBSE Class-8 Science): Questions 1 - 7 of 10

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Question number: 1

» Materials: Metals and Non-Metals » Chemical Properties of Metals & Non-Metals » Reactions With Acids

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Corrosion of metal utensils takes place

b.

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

c.

Acid in the food stuff react with utensil of metal

d.

Both b. and c. are correct

Question number: 2

» Materials: Metals and Non-Metals » Chemical Properties of Metals & Non-Metals » Reactions With Acids

MCQ▾

Question

Copper reacts with

Choices

Choice (4) Response

a.

Sulphuric acid

b.

Nitric acid

c.

Dilute hydrochloric acid

d.

Both a. and b. are correct

Question number: 3

» Materials: Metals and Non-Metals » Chemical Properties of Metals & Non-Metals » Reaction With Water

MCQ▾

Question

Which metal react violently with water

Choices

Choice (4) Response

a.

Gold

b.

Sodium

c.

Copper

d.

Silver

Question number: 4

» Materials: Metals and Non-Metals » Chemical Properties of Metals & Non-Metals » Reactions With Acids

MCQ▾

Question

Metals react with acid and produce

Choices

Choice (4) Response

a.

Sulphur dioxide

b.

Nitrogen dioxide

c.

Hydrogen gas

d.

Oxygen

Question number: 5

» Materials: Metals and Non-Metals » Chemical Properties of Metals & Non-Metals » Reaction With Water

MCQ▾

Question

Phosphorous is stored in water because it is:

Choices

Choice (4) Response

a.

More reactive to water

b.

less reactive to water

c.

Do not react with water

d.

None of the above

Question number: 6

» Materials: Metals and Non-Metals » Chemical Properties of Metals & Non-Metals » Reaction With Oxygen

MCQ▾

Question

Metals when combine with oxygen forms oxides which are

Choices

Choice (4) Response

a.

basic in nature

b.

Neutral in nature

c.

acidic in nature

d.

All of the above

Question number: 7

» Materials: Metals and Non-Metals » Chemical Properties of Metals & Non-Metals » Displacement Reactions

MCQ▾

Question

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.

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

c.

Displacement of one metal with another metal

d.

Synthetic fibre which is used in place of wool

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