Environmental Science and Ecology - Mock Test 3

Question 21

Among the following which one causes more indoor chemical pollution

A) burning coal B) burning cooking gas C) burning mosquito coil D) room spray

---

No Details

Question 22

Which of the following causes biomagnification

A) SOâ‚‚ B) Mercury C) DDT D) Both b & c

---

No Details

Question 23

Non-biodegradable pollutants are created by

A) nature B) excessive use of resources C) humans D) natural disasters

---

No Details

Question 24

Major aerosol pollutant in jet emission is

A) sulphur dioxide B) carbon monoxide C) methane D) fluorocarbon

---

No Details

Question 25

Which of the following is most harmful pollutant

A) NOâ‚‚ B) COâ‚‚ C) SOâ‚‚ D) CO

---

No Details

Question 26

Which of the following does not cause pollution

A) Thermal power project B) Nuclear energy project C) Automobile D) Hydro electric project

---

No Details

Question 27

Which constituent of the atmosphere is likely to change if the forest cover is removed

A) Oâ‚‚ level is increased B) COâ‚‚ level is increased ( C) Oâ‚‚ level is significantly increases D) COâ‚‚ level is significantly decreased

---

No Details

Question 28

Photochemical smog is related to the pollution of

A) soil B) water C) air D) noise

---

No Details

Question 29

Water pollution can be stopped best by

A) treating effluents to remove injurious chemicals B) rearing more fishes C) cultivating useful water plants D) spraying with ddt

---

No Details

Question 30

In BOD test oxygen plays an important role to

A) destroy inorganic matter B) destroy pollution C) destroy waste organic matter D) none of these

---

No Details