B:-Above 30 db
C:-Above 120 db
D:-Above 100 db
Correct Answer:- Option-A
Question88:-'Solar ponds' function on the basis of
A:-Photonics
B:-Non-convection
C:-Transpiration
D:-Convection
Correct Answer:- Option-B
Question89:-Tundra is
A:-Treeless biome
-Rich in Conifers
C:-Rich in Pine trees
D:-A desert
Correct Answer:- Option-A
Question90:- convention banned the world wide use of endosulfan.
A:-Geneva
-Nairobi
C:-Basel
D:-Stockholm
Correct Answer:- Option-A
Question91:-'Knock-knee syndrome' is due to
A:-Arsenic toxicity
-Cadmium toxicity
C:-Fluoride toxicity
D:-Selenium toxicity
Correct Answer:- Option-C
Question92:-The common coagulant used in water treatment is
A:- (CaSO_(4))_(2)..°2H_(2)0°
8॥ (2) (50_(4)) _3. 20
@- 41 (2) (50 _(4)) _3. 140 (20௦:
0:-` ©+ (3) COOH
Correct Answer:- Option-C
Question93:-Secchi discs are used in studies.
A:-Water quality
B:-Microbiological
C:-Air quality
D:-Quadrate
Correct Answer:- Option-A
Question94:-'Pyrology' is the study of
A:-Distribution of animals in relation to temperature
B:-Role of fire in ecology
C:-Distribution of plants in forests in relation to light
D:-Variation in species distribution in relation to ambient temperature
Correct Answer:- Option-B
Question95:-Through a chemical process coal is converted to a liquid/gas fuel known as
A:-Coal fuel
B:-Natural fuel
C:-Oil shale
D:-Synfuel
Correct Answer:- Option-D
Question96:-OTEC is a technology for
A:-Conservation of Ocean biodiversity
B:-Prevention of marine pollution
C:-Bioremediation of ocean oil spill
D:-Obtaining energy from ocean
Correct Answer:- Option-D
Question97:-'Albedo' is