Materials: Metals and Non-Metals (CBSE (Central Board of Secondary Education- Board Exam) Class-8 Science): Questions 1 - 8 of 20

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Question number: 1

» Materials: Metals and Non-Metals » Physical Properties of Metals & Non-Metals » Ductility

MCQ▾

Question

Thin wires are made from:

Choices

Choice (4) Response

a.

Non-metals

b.

Metals

c.

Metalloid

d.

Question does not provide sufficient data or is vague

Question number: 2

» Materials: Metals and Non-Metals » Metals & Non- Metals » Uses of Metals and Nonmetals

MCQ▾

Question

Metal used in the formation of antiseptic is:

Choices

Choice (4) Response

a.

Hydrogen

b.

Nitrogen

c.

Sulphur

d.

Iodine

Question number: 3

» 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: 4

» 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: 5

» 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: 6

» 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: 7

» 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: 8

» Materials: Metals and Non-Metals » Physical Properties of Metals & Non-Metals » Metals Are Good Conductors of Heat

MCQ▾

Question

Metals are used for making vessels because they are:

Choices

Choice (4) Response

a.

Bad conductor of electricity

b.

Good conductor of electricity

c.

Good conductors of heat

d.

Bad conductor of heat

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