Tamil Nadu (English Medium) Plus 2 Biology Science Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
The cause of decline in the population of reptiles and birds is

(A) DDT	(B) biofertilizer
(C) bioinsecticides	(D) sewage

Question-2
Ozone (O₃) depletion is due to

(A) PAN	(B) NO_x
(C) CFCs	(D) Sulphates

Question-3
Which of the following is an inexhaustible resource ?

(A) Fossil fuel	(B) Solar energy
(C) Coal	(D) Petroleum

Question-4
Chipko movement was launched for the protection of

(A) grasslands	(B) forests
(C) liverstock	(D) wet lands

Question-5
Which one is not the renewable energy of natural resources ?

(A) Tidal energy	(B) Wind energy
(C) Fossil energy	(D) Solar energy

Question-6
In 2002 AD, according to research, the concentration of CFCs reached to

(A) 368 ppm	(B) 1750 ppb
(C) 261 ppt	(D) 326 ppb

Question-7
Increase in atmospheric temperature due to CO₂ is called

(A) Pasteur effect	(B) Green house effect
(C) Blackman effect	(D) Emerson effect

Question-8
The alien species introduced into lake Victoria that was responsible for the extinction of Cichlid fishes is

(A) African catfish	(B) Water hyacinth
(C) Carrot grass	(D) Nile perch

Question-9
'Van Mahostav' was started by

(A) K M Munshi	(B) Sundar Lal Bahugunae
(C) Vinoba Bhave	(D) J L Nehru

Question-10
According to Kyoto protocol, the major nations abide to reduce concentration of green-house gases by

(A) 2008	(B) 2010
(C) 2012	(D) 2018

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Plus 2 Biology Science

Tamil Nadu (English Medium)

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