Tamil Nadu (English Medium) Plus 1 Humanities Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
The incrase in which content of the atmosphere may change the heat balance ?

(A) Oxygen	(B) Ozone
(C) Carbon dioxide	(D) Nitrogen

Question-2
Which is considered as the broadest earth ecosystem ?

(A) Lithosphere	(B) Hydrosphere
(C) Biosphere	(D) Atmosphere

Question-3
Which allows more absorption of incoming solar radiation and outgoing terrestrial re-radiation ?

(A) Carbon dioxide	(B) Oxygen
(C) Carbon	(D) Ozone

Question-4
Which are the first life forms to colonize the early earth ?

(A) Animals	(B) Humans
(C) Plants	(D) Birds

Question-5
Industrial revolution starts at which century ?

(A) 15^th	(B) 16^th
(C) 17^th	(D) 18^th

Question-6
Earth rotates on its axis, inclined at an angle of :

(A) 63½⁰	(B) 32½⁰
(C) 43½⁰	(D) 23½⁰

Question-7
Humans developed their own environment known as :

(A) Cultural environment	(B) Social environment
(C) Economic environment	(D) Primitive environment

Question-8
Which made a significant change in the attitude of humans ?

(A) Discovery of fire	(B) Hunting
(C) Discovery of tools	(D) Domestication of animals

Question-9
Earth is a unique planet because of the :

(A) Life forms that exists on its surface	(B) Things that exists on its surface
(C) Nature that exists on its surface	(D) Non living forms that exists on its surface

Question-10
Primitive humans were totally dependent on their environment and so they are called as:

(A) Physical humans	(B) Natural humans
(C) Environmental humans	(D) None of these

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Plus 1 Humanities

Tamil Nadu (English Medium)

Practice in Related Chapters
Earth System Science
Biotic Components
Thematic Maps
Abiotic Components
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