A:-Ozone depletion

B:-Melting of permafrost

C:-Glaciations

D:-Greenhouse effect

Correct Answer:- Option-A
Question49:-The maximum amount of water that the soil can hold after the loss of gravitational water is known as

A:-Hygroscopic water
[0 capacity

C:-Capillary water

D:-Stored water

Correct Answer:- Option-B
Question50:-Limnology is a study of

A:-Aging

B:-Tics and mites

C:-Fresh water bodies

D:-Termites

Correct Answer:- Option-C
Question51:-'Silviculture' refers to the practice of

A:-Honey bee keeping

B:-Growing Silk-worms

C:-Forest management with objective of producing specific plants

D:-Silver fish culturing

Correct Answer:- Option-C
Question52:-An example of fossil fuel is

A:-Wood

B:-Gobar gas

C:-Charcoal

D:-Gasoline

Correct Answer:- Option-D
Question53:-The ecosystem of stagnant fresh water habitat is known as ecosystem.

A:-Standing crop

B:-Lentic

C:-Lotic

D:-Abyssal

Correct Answer:- Option-B
Question54:-'Photochemical smog* is caused by the interaction of

A:-Hydrocarbons and Ozone

B:-Hydrocarbons and 1/0 09”

C:-'NO_(x)* and Ozone

D:-Hydrocarbons, 0 00” 3201 ‏ت026‎

Correct Answer:- Option-D
Question55:-'Ramsar Convention' is for

A:-Wetlands

B:-Tropical Forests

C:-Oceans

D:-Mountains

Correct Answer:- Option-A
Question56:-Graphite is used as in

A:-Surface coat, electronic chip

B:-Brush, electronic devices

C:-Moderator, nuclear reactors

D:-Packing material, GC columns

Correct Answer:- Option-C
Question57:-Heliophytes are plants which grow in

A:-Full sunlight

B:-Low intensity of light

C:-Complete darkness

D:-Salt water

Correct Answer:- Option-A