TNPSC - TRB - FREE ONLINE TEST 30 | ZOOLOGY | ENVIRONMENTAL SCIENCE

1.Which of the following is an ozone depleting substance.
A) Nitrogen oxides
B) Carbon dioxide
C) Hydrogen
D) Sulphur dioxide

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ANSWER : A) Nitrogen oxides

2.In 2000, scientists discovered an alarming increase in the level of a new gas called
A) Hydrocarbons
B) Trifluoromethyl sulphur penta fluoride
C) Chlorofluorocarbons
D) Carbon dioxide

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ANSWER : B) Trifluoromethyl sulphur penta fluoride

3.Which of the following is not a greenhouse gas?
A) Nitrous Oxide
B) Carbon dioxide
C) Hydrogen
D) Methane

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ANSWER : C) Hydrogen

4.Cyanides are broken by
A) Super bug
B) Gibberella fusarium
C) E.Coli
D) Rhizobium bacteria

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ANSWER : B) Gibberella fusarium

5.The term Super bugs refers to.................
A) Arthropods
B) Insects
C) Bettles
D) Genetically engineered bacteria

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ANSWER : D) Genetically engineered bacteria

6.Ozone loss was detected in......................
A) Antarctic region
B) Equatorial region
C) Arctic region
D) Siberian region

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ANSWER : A) Antarctic region

7.A good choice among all the alternative fuel options.
A) Natural gas
B) Butane
C) Hydrogen
D) Biogas

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ANSWER : C) Hydrogen

8.The geothermal energy is drawn in the form of ..........
A) Heat
B) Magnetic
C) Stream
D) Pressure

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ANSWER : C) Stream

9........ is fast emerging as a significant source of electricity in several island nations.
A) Geothermal energy
B) Wind Energy
C) Ocean energy
D) Solar energy

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ANSWER : A) Geothermal energy

10.Which of the following providing about 95% of all commercial energy in the world?
A) Geothermal energy
B) Petroleum, natural gas and coal
C) Solar energy
D) Ocean energy

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ANSWER : B) Petroleum, natural gas and coal

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