Question

bur, etc. are also found in the
oportion of most of the gases
available from the seas.
arried out through oceanic routes.
Lo a height of about 1600 km
Ozone, Hydrogen, etc. are the
cogen forms about 78 %, oxygen
he atmosphere. Besides these
'Atmosphere'.
4.71%
roportion in the atmosphere,
oming towards the earth and
OOO OO
earth alive. Nitrogen dilutes
he atmosphere. It is in the
sation of the water vapour,
the sunlight on the earth
(2) How much area of the earth's surface is occupied by the
lithosphere?
A. 21 % B. 78 % C. 71 % D. 29%
(3) How much area of the earth's surface is occupied by the
hydrosphere?
B. 97 % C. 78 % D. 29 %
( 4 ) How many kilometres is the maximum depth of the deepest
ocean trenches ?
A. 5 to 6 B.8 to 9 c. 10 to 11
D. 14 to 15
(5) Out of the total water on the surface of the earth, what is
the percentage of water in the oceans ?
A. 71 % B. 78 % C. 91 % D. 97 %
(6) Which is the main source of fresh water?
A. Rivers B. Lakes C. Wells D. Rain
(7) Which sphere of the earth is colourless, odourless and
transparent ?
A. Hydrosphere B. Atmosphere C. Biosphere D. Lithosphere
(8) Which sphere of the earth cannot be seen?
A. Lithosphere B. Biosphere C. Atmosphere D. Hydrosphere
(9) Up to how many kilometres from the surface of the earth is
the atmosphere extended ?
A. 1600 B. 1000 C. 1200 D. 1400
(10) What is the approximate proportion of nitrogen in the
atmosphere?
A. 71 % B. 48 % C. 78 % D. 21 %
(11) What is the approximate proportion of oxygen in the atmosphere?
A. 21 % B. 28 % C. 71 % D. 78 %
(12) Which atmospheric gas absorbs the ultra-violet sunrays ?
A. Nitrogen B. Oxygen
C. Ozone
D. Hydrogen
(13) Which gas in the atmosphere dilutes the intensity of oxygen ?
A. Ozone B. Carbon dioxide C. Nitrogen D. Hydrogen
(14) Due to which component of the atmosphere, do the sunrays
spread on the earth ?
A. Oxygen B. Ozone C. Carbon dioxide D. Dust particles
(15) Which gas increases in proportion in the area of heavy
vehicular traffic ?
A. Carbon monoxide B. Nitrogen C. Hydrogen D. Argon
(16) Due to the increase in the proportion of which gas does the
heat on the earth increase ?
A. O2 B.H2 C.N2 D. CO2
am of atmosphere. The radio
y due to the atmosphere.
and atmosphere where life
arth is the only planet in
osphere includes animals,
Shere.
tic and Abiotic.
and insects are included,
here and atmosphere are
man, the balance of some
the biosphere.
ven below each question
ainst it:
th?​

Answer 1

Answer:

on the earth increase ?

A. O2 B.H2 C.N2 D. CO2

am of atmosphere. The radio

y due to the atmosphere.

and atmosphere where life

arth is the only planet in

osphere includes animals,