NCERT - Environmental Issues Questions and Answers of Class 12 Biology | GkSeries

Sports GK Questions and Answers 2024 (Latest Updated)

Awards & Honours GK Questions 2024 (Latest Updated)

Questions
1 Lead is one of the most serious environmental pollutants which affects
1 Air
2 Soil
3 Water
4 Noise

Answer: Soil
2 Contamination of water with sewage is indicated by cysts of
1 Escherichia
2 Escherichia coli
3 Pseudomonas
4 Leishmania

Answer: Escherichia coli
Advertisement
Article and Schedule Quiz Start Test!
DOWNLOAD CURRENT AFFAIRS PDF FROM APP
3 Non-Ionizing radiations with specific biological effects are
1 Gamma rays
2 Beta-rays
3 UV radiations
4 X-rays

Answer: UV radiations
4 Carbon dioxide is called green-house gas because it is
1 Transparent to sunlight but traps heat
2 Transparent to heat but traps sunlight
3 Used in green-house to increase plant growth
4 Transparent to both sunlight and heat

Answer: Transparent to sunlight but traps heat
5 Which one of the following pairs of gases are the major causes of "Greenhouse Effect"?
1 CO2 and N2O
2 CO2 and O3
3 CO2 and CO
4 CFCs and SO2

Answer: CO2 and N2O
6 Trichoderma harzianum has proved a useful microorganism for:
1 Reclamation of wastelands
2 Bioremediation of contaminated soils
3 Biological control of soil-borne plant pathogens
4 Gene transfer in higher plants

Answer: Bioremediation of contaminated soils
7 ______ are used in electrostatic precipitators.
1 Catalysts
2 Electrodes
3 Absorbers
4 Chemicals

Answer: Electrodes
8 lf there was no CO2 in the atmosphere, the earth’s temperature would be
1 Less than the present
2 Same as present
3 Higher than the present
4 Dependent on O2 content of air

Answer: Less than the present
9 Ultraviolet radiation from sunlight causes the reaction that produces
1 Fluorides
2 Ozone
3 Carbon monoxide
4 Sulphur dioxide

Answer: Ozone
10 Ozone day is observed on
1 September 16
2 April 25
3 January 15
4 December 16

Answer: September 16
11 Biological oxygen demand of ______ is the least.
1 sewage
2 sea water
3 pure water
4 polluted water

Answer: pure water
12 Biochemical Oxygen Demand (BOD) in a river water
1 Increases when sewage gets mixed with river water
2 Remains unchanged when algal bloom occurs
3 Has no relationship with concentration of oxygen in the water
4 Gives a measure of salmonella in the water

Answer: Increases when sewage gets mixed with river water
13 The two gases making highest relative contribution to the greenhouse gases are
1 CO2 and N2O
2 CO2 and CH4
3 CH4 and N2O
4 CFC5 and N2O

Answer: CO2 and CH4
14 DDT is a
1 Green house gas
2 Non-degradable pollutant
3 Degradable pollutant
4 None of these

Answer: Non-degradable pollutant
15 Ozone depletion in the stratosphere will cause
1 Increased incidence of skin cancer
2 Forest tires
3 Global warming
4 none of these

Answer: Increased incidence of skin cancer

Random GK Questions

Q. The constituent Assembly was set up in :
Q. Cash is what type of asset of bank ?
Q. Which of the following is not a method of preparing oxygen?
Q. Indian Penal Code came into operation in
Q. Who was first Nobel Prize winner for peace in India?
Q. The Government of India derives its single largest source of revenue from

ADRE 2.0 FULL LENGTH MOCK TEST

Take Mock Tests

Missiles Mock Test Start Test!
SSC MTS Mock Test Start Test
IBPS CLERK MOCK TEST Start Test
SSC MTS 2022 JULY 26 Shift 1 (ENGLISH) Start Test!
SSC GD Previous Year Paper 2021 Nov 17 Shift - I (Hindi) Start Test!
SSC CGL Tier - 1 PYP 2022 April 21 Shift- 1 (ENGLISH) Start Test!
MPSC PAPER I MOCK TEST 1 (ENGLISH) Start Test!
IB Security Assistant Mock test 1 (english) Start Test!
UP POLICE CONSTABLE MOCK TEST 1 Start Test!
DELHI POLICE CONSTABLE MOCK TEST 1 (HINDI) Start Test!

Chapters

Assam Direct Recruitment Test Series

GK Topics