GEOGRAPHY MCQS SET 147

GEOGRAPHY MCQS SET 147

1461) Microbial fuel cells are considered a source of sustainable energy. Why?
1. They use living organisms as catalysts to generate electricity from certain substrates. 2. They use a variety of inorganic materials as substrates.
3. They can be installed in waste water treatment plants to cleanse water and produce electricity.
Select the correct answer using the codes given below
A) Only 1
B) 2 and 3
C) 1 and 3
D) 1, 2 and 3

Answer: 1 and 3
   
1462) Consider the following
1. Photosynthesis
2. Respiration
3. Decay of organic matter
4. Volcanic action
Which of the factors given above add carbon dioxide to the carbon cycle on Earth?
A) 1 and 4
B) 2 and 3
C) 2,3 and 4
D) 1,2,3 and 4

Answer: 2,3 and 4
   
1463) Which one of the following is the main cause of the ecological imbalance in India
A) Deforestation
B) Desertification
C) Floods and famines
D) Rainfall variations

Answer: Rainfall variations
   
1464) What is the role of Ultra-Violet (UV) radiation in the water purification systems?
1. it inactivates/kills the harmful microorganisms in water.
2. it removes all the undesirable odours from the water.
3. It quickens the sedimentation of solid particles, removes turbidity and improves the clarity of water.
Which of the statements given above is/are correct?
A) Only 1
B) 2 and 3
C) 1 and 3
D) 1,2 and 3

Answer: Only 1
   
1465) Carbon dioxide is called a green house gas because
A) its concentration remains always higher than other gases
B) it is used in photosynthesis
C) it absorbs infrared radiation
D) it emits visible radiation

Answer: it absorbs infrared radiation

1466) Which of the following is not a green house gas?
A) Carbon dioxide
B) Methane
C) Nitrous oxide
D) Nitrogen

Answer: Nitrogen
   
1467) What is the major role of a green house gas that contributes to temperature rise of the earth's surface?
A) Transparent to both incoming sunlight and outgoing infrared radiation
B) Stops both incoming sunlight and outgoing infrared radiation
C) Lets outgoing infrared radiation can through but stops incoming sunlight
D) Lets incoming sunlight pass through but stops outgoing infrared radiation.

Answer: Lets incoming sunlight pass through but stops outgoing infrared radiation.
   
1468) The increasing amount of carbon dioxide in the air is slowly raising the temperature of the atmosphere, because it absorbs
A) the water vapour of the air and retains its heat
B) the ultraviolet part of the solar radiation
C) all the-solar radiations
D) the infrared part of the solar radiation

Answer: the infrared part of the solar radiation
   
1469) Which one of the following is not a greenhouse gas?
A) Water vapours
B) Methane
C) Ozone
D) Carbon monoxide

Answer: Carbon monoxide
   
1470) 'Rio + 20' is the short name for
A) Millennium Development Goals
B) United Nations Conference on Sustainable Development
C) Earth Summit
D) Post-2015 Development Agenda

Answer: Earth Summit