Environmental Biotechnology MCQs

Question 1

Most of the lichens are consists of

Accepted Answer

Green algae and ascomycetes

Answer

Green algae and basidiomycetes

Answer

Brown algae and ascomycetes

Answer

Mycorrhizae and plants

Question 2

Many species of marine bacteria characteristically grow while attached to a solid surface and are called

Accepted Answer

Epibacteria

Answer

Psychrophiles

Answer

Archeobacteria

Answer

Barophiles

Question 3

Garnet is a metamorphic product of

Accepted Answer

Mica

Answer

Feldspar

Answer

Quartzite

Answer

Serpentine

Question 4

Burning of fossil fuels is the main source of pollution

Accepted Answer

Sulphur oxide

Answer

Nitrogen oxide

Answer

Nitric oxide

Answer

Nitrous oxide

Question 5

Trophic structure may be shown graphically by ecological pyramids; which of the following ecological pyramid will always have a true upright shape

Accepted Answer

Pyramid of energy

Answer

Pyramid of numbers

Answer

Pyramid of biomass

Answer

All of the above

Question 6

The diatomaceous earth is used as a

Accepted Answer

Non-chemical insecticide

Answer

Chemical insecticide

Answer

Fungicide

Answer

Bactericide

Question 7

The noise index LgO refers to

Accepted Answer

Average noise level

Answer

Background noise level

Answer

Peak noise level

Answer

90%

Question 8

The solubility of Fe in water

Accepted Answer

Decreases with increasing in pH

Answer

Increases with increasing in pH

Answer

Independent of pH

Answer

Dependent only on redox potential and not pH

Question 9

Biodiesel is obtained by

Accepted Answer

Jatropha spp.

Answer

Allium cepa

Answer

Mangifera indica

Answer

Argemonem axicana