Bevae 181 June 2022 full question paper solved | Bevae 181 Answer Key June 2022
Check your answers accordingly | BEVAE 181 JUNE 2022 answer key | BEVAE 181 | IGNOU Answer Key 2022
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Q. 25. Finer particles in waste water can be made to settle by using:
(1) Chlorination (3) Caustic soda
(2) Carbon dioxide (4) Hydrogen sulphide
Ans. (3) Caustic soda
Q. 26. What percentage of global freshwater is available in the liquid form?
(1) 5
(2) 10
(3) 15
(4) 20
Ans. (4) 20
Q. 27. Which of the following is not achieved by addition of manure?
(1) Improved cohesiveness of soil
(2) Increase in water retention capacity
(3) Decrease in soil salinity
(4) A more stable aggregate structure
Ans. (2) Increase in water retention capacity
Q. 28. Which of the following sources of energy is non-conventional ?
(1) Hydropower
(2) Biomass
(3) Natural gas
(4) Atomic energy
Ans. (2) Biomass
Q. 29. Which of the following regions in India is the highest producer of mineral oil?
(1) Upper Assam
(2) Cambay
(3) Krishna-Godavari basin
(4) Bombay High
Ans. (4) Bombay High
Q. 30. Economic development leads to declining growth rates of per capita energy demand in which of the following?
(1) Industrial sector
(2) Residential sector
(3) Transport sector
(4) Commercial sector
Ans. (1) Industrial sector
Q. 31. 'Sludge gas' largely consists of :
(1) sulphur dioxide
(2) hydrogen sulphide
(3) carbon dioxide
(4) methane
Ans. (4) methane
Q. 32. Intergovernmental Panel on Climate Change (IPCC) was established in;
(1) 1982
(2) 1985
(3) 1988
(4) 1990
Ans. (3) 1988
Q. 33. Which one of the following is not responsible for acid rain ?
(1) Sulphur dioxide
(2) Sulphur trioxide
(3) Nitrogen dioxide
(4) CFCs
Ans. (4) CFCs
Q. 34. Which one of the following is not a part of Eight National Missions for climate change?
(1) National Water Mission
(2) National Mission for a Green India
(3) National Mission for Hunger and Poverty Eradication
(4) National Mission for Sustainable Habitat
Ans. (3) National Mission for Hunger and Poverty Eradication
Q. 35. Basel convention is largely related to:
(1) biological diversity
(2) hazardous waste management
(3) ozone depletion
(4) greenhouse gases
Ans. (2) hazardous waste management
Q. 36. The main function of National Green Tribunal is:
(1) effective and expeditious disposal of cases on environmental issues,
(2) effective and expeditious disposal of cases related to civil issues,
(3) frame regulations to control air pollution.
(4) frame environmental laws
Ans. (4) frame environmental laws
Q. 37. The Air (Prevention and Control of Pollution) Act was amended in :
(1) 1981 (3) 2000
(2) 1987 (4) 1974
Ans. (2) 1987
Q. 38. Which toxic gas was released from chemical plant during Bhopal Gas Tragedy ?
(1) Methane (3) Methyl isocyanate
(2) Sulphur dioxide (4) Ethyl isocyanate
Ans. (3) Methyl isocyanate
Q. 39. Which one of the following is a primary pollutant ?
(1) Sulphur trioxide
(2) Sulphur dioxide
(3) Sulphuric acid
(4) Sulphurous acid
Ans. (2) Sulphur dioxide
Q. 40. Which one of the following is responsible for depletion of oxygen in water causing harm to aquatic life?
(1) Detergents (3) Pesticides
(2) Human sewage (4) Industrial waste
Ans. (2) Human sewage
Q. 41. What would be the best method for disposal of radioactive nuclear waste?
(1) Dumping at sea
(2) Underground disposal
(3) Landfill disposal
(4) Incineration
Ans. (2) Underground disposal
Q. 42. Which one of the following is not a biological method of waste treatment ?
(1) Conditioning
(2) Digestion
(3) Composting
(4) Lagooning and tank storage
Ans. (4) Lagooning and tank storage
Q. 43. Which of the following is not a factor requiring new set of ethics for the environment?
(1) Changing food habits
(2) New effect on nature
(3) New knowledge about nature
(4) Expanding moral concerns
Ans. (1) Changing food habits
Q. 44. Which one of the following statements related to economic significance of forest is not correct ?
(1) It provides a wide variety of goods and services which include food, fodder and fuel.
(2) It holds the key to numerous life sustaining products such as pharmaceuticals, insecticides and pesticides.
(3) It protects watersheds and ensure perennial supplies of fresh water.
(4) Fruits, leaves, roots and tubers of the plants form the food of forest tribes.
Ans. (3) It protects watersheds and ensure perennial supplies of fresh water.
Q. 45. Which one of the following is not one of the causes of deforestation?
(1) Population explosion
(2) Forest fires
(3) Pest attacks
(4) Rise in carbon dioxide in the atmosphere
Ans. (4) Rise in carbon dioxide in the atmosphere
Q. 46. India needs about percentage of its total area under forest to meet the ecological and economic needs.
(1) 50
(2) 25
(3) 40
(4) 33
Ans. (4) 33
Q. 47. Which of the following animals excretes very concentrated urine ?
(1) Camel
(2) Garden lizard
(3) Nocturnal rodents
(4) Snakes
Ans. (3) Nocturnal rodents
Q. 48. The attitude which assigns significantly greater value to human being than any other non-human organisms is known as:
(1) Stewardship
(2) Anthropocentrism
(3) Biocentrism
(4) Eco-feminism
Ans. (2) Anthropocentrism
Q. 49. Which one of the following is not an ENVIS Centre ?
(1) National Institute of Occupational Health, Ahmedabad
(2) Tata Institute of Fundamental Research, Mumbai
(3) Society for Development Alternatives, New Delhi
(4) Industrial Toxicology Research Centre, Lucknow
Ans. (2) Tata Institute of Fundamental Research, Mumbai
Q. 50. MPN test is used to detect:
(1) E. coli
(2) Schigella boyadis
(3) S. sonmei
(4) Vibrio cholerae
Ans. (1) E. coli
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