NSO Level 1- Science Olympiad (SOF) Class 8: Questions 629 - 634 of 1076

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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

Question number: 632

» Combustion and Flame

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MCQ▾

Question

The ignition temperature of an inflammable substance would be

Choices

Choice (4)Response

a.

Medium

b.

Low

c.

Less than zero

d.

High

Question number: 633

» Metals and Non-Metals

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MCQ▾

Question

A metal which is not malleable is

Choices

Choice (4)Response

a.

Platinum

b.

Copper

c.

Arsenic

d.

Aluminium

Question number: 634

» Combustion and Flame

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MCQ▾

Question

Sodium is stored in kerosene. The reason is

Choices

Choice (4)Response

a.

Ignition temperature of sodium is lower than room temperature

b.

It undergoes spontaneous combustion in room temperature

c.

It reacts vigorously with water.

d.

All a. , b. and c. are correct

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