CBSE Class-8 Science: Questions 96 - 102 of 469

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Question number: 96

» Synthetic Fibres and Plastics » Synthetic Fibres » Natural and Man-Made Fibres

MCQ▾

Question

Fibres obtained from plants and animals are called

Choices

Choice (4) Response

a.

Synthetic Fibres

b.

Natural Fibres

c.

Man-made Fibres

d.

Cellulose

Question number: 97

» 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

Question number: 98

» Synthetic Fibres and Plastics » Plastics and Environment » Reduce, Reuse, Recycle and Recover

MCQ▾

Question

4R Principle is:

Choices

Choice (4) Response

a.

Recover

AND

Reduce

b.

Recycle

c.

Reuse

d.

All a. , b. and c. are correct

Question number: 99

» 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: 100

» Synthetic Fibres and Plastics » Synthetic Fibres » Natural and Man-Made Fibres

MCQ▾

Question

Synthetic fibres are also called as:

Choices

Choice (4) Response

a.

Man-made fibres

b.

Elastic fibres

c.

Chemical fibres

d.

Artificial fibres

Question number: 101

» 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

Question number: 102

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

MCQ▾

Question

Metal used for the galvanisation of iron is:

Choices

Choice (4) Response

a.

Copper

b.

Magnesium

c.

Zinc

d.

Aluminium

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