NSO Level 1- Science Olympiad (SOF) Class 8: Questions 626 - 631 of 1076

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Question number: 626

» Combustion and Flame

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MCQ▾

Question

A substance which puts out fire is called a

Choices

Choice (4) Response

a.

Non-combustible substances

b.

Extinguisher

c.

Combustible substances

d.

Inflammable substances

Question number: 627

» Combustion and Flame

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MCQ▾

Question

Food can be considered as a fuel. The facts supporting this statement are

Choices

Choice (4) Response

a.

A substance that reacts with oxygen to give out energy is called a fuel

b.

Food reacts with oxygen to give out energy

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Question number: 628

» Combustion and Flame

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MCQ▾

Question

When a person’s dress catches fire, the best way to extinguish fire is to

Choices

Choice (4) Response

a.

Spray carbon dioxide gas on him

b.

Spray water on him

c.

Cover the person with a thick blanket

d.

Cover the person with a plastic sheet

Question number: 629

» Reproduction in Animals

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MCQ▾

Question

Find the odd one out from the given animals.

Choices

Choice (4) Response

a.

Bat

b.

Kiwi

c.

Penguin

d.

Ostrich

Question number: 630

» Reproduction in Animals

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MCQ▾

Question

Ovoviviparous are animals which produce fully developed eggs but the eggs hatch within the female’s body. In this animal the eggs hatch within the male’s body and the male give birth to young ones. Identify the animal.

Choices

Choice (4) Response

a.

Sea urchin

b.

Viper

c.

Sea horse

d.

Bat

Question number: 631

» Metals and Non-Metals

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MCQ▾

Question

The inner surface of iron kadai and frying pan are coated with zinc. The reason is

Choices

Choice (4) Response

a.

Iron reacts with air and moisture to form rust

b.

Zinc acts as a protective cover to prevent the contact between iron and atmosphere

c.

Zinc reacts with oxygen to form zinc oxide.

d.

Both a. and b. are correct

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