General Science MCQs Part II
21 Why do migratory birds go back in the next spring?
Breeding instinct with change in climate
22 Which constituent of the blood carries food materials to all tissues of the body?
White corpuscles
23 What is an instinct?
An immature action
24 How many muscles does a human body have?
173 muscles
25 Why is rest necessary after a good deal of exercise or work?
To neutralize poison that is produced during exercise or work
26 The nerves that carry impulses form the brain are called
Motor Nerves
27 What is a Whale?
A mammal
28 The sky over the earth in fact looks
Blue
29 Can there be light without heat?
Yes
30 One of the sources of the light without heat is
Glow-worm
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