1) When a man
circles round the earth in a satellite, then
A.
His mass becomes zero but weight remains constant
B.
Mass remains constant but weight becomes zero
C.
Both mass and weight remain constant
D.
Both mass and weight remain zero
Answer : B.
2) The weight of
an object at the poles is greater than at the equator. This is because
A. Of
the shape of the earth
B.
The attraction of the moon is maximum at the earth’s surface
C.
The attraction of the sun is maximum at the earth’s surface
D.
Gravitational pull is more at the poles
Answer : D.
3) The first
metal used by the man was
A.
Iron
B.
Copper
C.
Aluminium
D.
Gold
Answer : B.
4) Gobar gas
contains mainly
A.
Carbon dioxide
B.
Methane
C.
Ethylene
D.
Carbon monoxide
Answer : B.
5) The content
of water is greater than fats, the plasma is more than proteins, proteins are
more than fats and fats less than plasma. Which constitutes the major Part of
the human body ?
A.
Fats
B.
Water
C.
Plasma
D.
Proteins
Answer : B.
6) The water in
an open pond remains cool even in hot summer because
A. Of
continuous evaporation of water
B.
Water radiates heat more rapidly than the atmosphere
C.
Water absorbs heat less rapidly than the atmosphere
D.
Water absorbs heat more rapidly than the atmosphere
Answer : C.
7) If a large
number of people are enclosed in a room, then
A.
Oxygen decreases and carbon dioxide increases
B.
Oxygen increases and carbon dioxide decrease
C.
Both oxygen and carbon dioxide decrease
D.
Both oxygen and carbon dioxide increase
Answer : A.
8) It is not
advisable to sleep under a tree at night because of the
A.
Release of oxygen in lesser amount
B.
Release of oxygen in larger amount
C.
Release of carbon monoxide
D.
Release of carbon dioxide
Answer : D.
9) Which of the
following is a balanced fertiliser for plants ?
A.
Urea
B.
Ammonia sulphate
C.
Nitrates
D.
Compost
Answer : D.
10) Which one of
the following is a fast growing tree ?
A.
Teak
B.
Eucalyptus
C.
Banyan
D.
Coconut
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