Natural Resources – Questions and Answers for CBSE 9th class
1-The natural resource(s) on the earth is (are)
(A) Land
(B) Water
(C) Air
(D) All of the above
2-Water covers __ % of the Earth’s surface.
(A) 60
(B) 65
(C) 70
(D) 75
3-The outer crust of the Earth is called the
(A) Asthenosphere
(B) Lithosphere
(C) Upper mantle
(D) Outer core
4-Which of the following constitute the biosphere?
(A) Atmosphere
(B) Lithosphere
(C) Hydrosphere
(D) All of the above
5-Living things constitute the ___ component of the biosphere.
(A) biotic
(B) abiotic
(C) both (A) and (B)
(D) none of the above
6-In planets Venus and Mars, the major component of the atmosphere is found to be
(A) Oxygen
(B) Hydrogen
(C) Carbon Monoxide
(D) Carbon dioxide
7-Water vapors are formed
(A) due to the heating of water bodies
(B) the activities of living organisms
(C) both (A) and (B)
(D) none of the above
8-Which of the following is true?
(A) Land gets heated faster than water
(B) Water gets heated faster than land
(C) Water and Land gets heated equally
(D) It depends upon the weather
9-Which of the following influence the movement of wind
(A) uneven heating of the atmosphere in different regions of the earth
(B) the rotation of earth
(C) the presence of mountain ranges
(D) all of the above
10-Smog is due to the presence of
(A) suspended particles in the air
(B) tiny water droplets in the air
(C) carbon dioxide in the air
(D) none of the above
11-Following factor is responsible for making soil
(A) The sun
(B) Water
(C) Wind
(D) All of the above
12-The soil contains bits of the decayed living organisms, known as
(A) humus
(B) fossils
(C) minerals
(D) nutrients
13-The topsoil contains
(A) humus
(B) living organisms
(C) soil particles
(D) all of the above
14-Following process(es) is involved in the water cycle in nature
(A) Respiration
(B) Transpiration
(C) Evaporation
(D) All of the above
15-The nitrogen fixing bacteria is found in
(A) leaves
(B) stems
(C) roots
(D) flower
16-Carbon is incorporated into life-forms through the basic process of
(A) nitrogen fixation
(B) evaporation
(C) photosynthesis
(D) transpiration
17-The phenomenon of Greenhouse effect leads to
(A) increase in average temperature world wide
(B) decrease in average temperature world wide
(C) constant average temperature world wide
(D) none of the above
18- Oxygen is found in the elemental form in the atmosphere to the extent of
(A) 15%
(B) 21%
(C) 26%
(D) 31%
19- Elemental oxygen is normally found in the form of a ___ molecule.
(A) monatomic
(B) diatomic
(C) triatomic
(D) none of the above
20-The formula of Ozone is
(A) O
(B) O2
(C) O3
(D) O4
ANSWERS:
1-(D), 2-(D), 3-(B), 4-(D), 5-(A), 6-(D), 7-(C), 8-(A), 9-(D), 10-(A), 11-(D), 12-(A), 13-(D), 14-(D), 15-(C), 16-(C), 17-(A), 18-(B), 19-(B), 20-(C)