Question Bank for CT-2

Environmental Studies

1. An _____ consists of biotic and abiotic components.

a) Environment
b) Ecosystem
c) Ecology
d) None of the above
2. Ecosystem can be of any _____ .
a) Size
b) Shape
c) Type
d) None of the above
3. “Tundra” is example of ______ type of ecosystem.
a) Marine
b) Terrestrial
c) Microbiological
d) None of the above
4. Amount of energy _____ from bottom to top.
a) Increases
b) Decreases
c) Remains same
d) None of the above
5. Primary producers are followed by _____ consumers.
a) Secondary
b) Primary
c) All
d) None of the above
6. Ecological pyramid consists of _____ and _____ in sequence.
a) Plants, animals
b) Producers, consumers
c) Consumers, producers
d) None of the above
7. In all ecological pyramids, producers are always at ____ .
a) Centre
b) Bottom
c) Top
d) None of the above
8. In alpine, animals have ____ blood vessels.
a) More
b) Large
c) Thick
d) None of the above
9. Plants under ocean are _____ .
a) Aquatic
b) Aquifers
c) Oceanicy
d) None of the above
10. Photosynthesis does not take place in _____ ocean water.
a) Deep
b) Shallow
c) Both above
d) None of the above
11. Which one of the following is not a type of biodiversity?
a) Genetic
b) Species
c) Biology
d) None of the above
12. Himalayan region is divided into north west, west, central and east Himalayas. These
are known as ____ .
a) Biotic provinces
b) Mountain ranges
c) Abiotic regions
d) None of the above
13. Ladakh mountains and Tibetan plateau are part of _____ .
a) Trans Himalaya region
b) Desert
c) Semi arid
d) None of the above
14. Which of the following is an indian biodiversity hotspots?
a) The western ghats
b) National parks
c) Botanical gardens
d) None of the above
15. A world map of hot spots with details of flora and fauna is prepared by ___ .
a) The national geographic society
b) Scientific organizations
c) Environmentalist
d) None of the above
16. Physical or biological complexity of a system is _____ .
a) Biodiversity
b) Diversity
c) Ecosystem
d) Culture
17. The pollutants that can be broken down rapidly by the natural process is called as __ .
a) Organic pollutants
b) Inorganic pollutants
c) Non-degradable pollutants
d) Degradable pollutants
18. Pesticides, fertilizers are called as _____ .
a) Degradable pollutants
b) Non-persistant pollutants
c) Persistant pollutants
d) Non-degradable pollutants
19. Which of these is a radioactive waste?
a) Gold
b) Silver
c) Mercury
d) Uranium
20. Necrosis means : ______
a) Damaging the ozone layer
b) Damaging the leaves
c) Premature fall of leaves
d) Damaging the leaves
21. The nature has its own mechanism to remove the pollutant. This mechanism is called
as ____ .
a) Photosynthesis
b) Scavenging
c) Dispersion
d) Chlorosis
22. Percentage of pollutant from fuel combustion is ____ .
a) 30%
b) 90%
c) 50%
d) 27%
23. The quality of paper and leather get affected by _____ .
a) SO2 and H2O
b) H2S and water
c) SO2 and acid gases
d) SO2 and O2
24. Balanced atmospheric percentage of carbon dioxide in atmosphere is ___ .
a) 33%
b) 39%
c) 31%
d) 35%
25. Man-made mechanism to control air pollution includes _____ .
a) Dispersion
b) Setting
c) Centrifugal separators
d) Absorption
26. Primary pollutants created by nature and not emphasized by human are ____ .
a) Bacteria and fire.
b) Pollen and breaking seas
c) Volcanoes and blowing dust
d) Bacteria and viruses
27. The pH of water should be between ____ .
a) 7 – 8
b) 8 – 10
c) 7 – 8.5
d) 0 – 7
28. _____ helps the growth of algae in water.
a) Hydrogen
b) Mercury
c) Phosphates
d) Calcium
29. Softening of water is done by _____ .
a) Boiling and adding lime
b) Cooling and heating
c) Adding chloride and fluoride
d) None of these
30. Water holding capacity gets reduced due to ___ .
a) Soil corrosion
b) Soil fertilization
c) Both (a) and (b)
d) Soil erosion
31. D.D , T , Aldrin, benzene are used as ____
a) Insecticides
b) Fertilizers
c) Weedicides
d) Pesticides
32. Smog created by reaction of sunlight with ____
a) SOx
b) CO
c) NOx
d) Lead
33. Asbestosis is disease of ____ .
a) Heart
b) Lungs
c) Eyes
d) Kidney
34. Fly ash is ____ portion of solid fuel.
a) Combustible
b) Non-combustible
c) Partially burnt
d) Harmful
35. A company or individual responsible for pollution
a) Polluter
b) Pollutant
c) Producer
d) Pollution
36. Safe method of disposing waste is _____ .
 a) Waste disposal
b) Waste dispersion
c) Waste treatment
d) 4R
37. Water borne disease includes ___.
a) Hepatitis A
b) Hypothermia
c) Psychosocial
d) Cardiovascular incidents
38. In sustainable development, the rate at which natural resources destroyed to its
replenishment should be, ____ .
a) Same
b) Higher
c) Lower
d) None of these
39. ____ released from mobile phones also contribute to photochemical smog.
a) Hydrocarbons
b) Radiations
c) Sound
d) None of these
40. The open water reservoirs face ___ of water.
a) Evaporation
b) Reduction
c) Waste waters
d) None of the above
41. Shortage of water faced can be solved by ___ .
a) Water storage
b) Well digging
c) Wain water harvesting
d) None of the above
42. The prime objective of watershed management is focus on water ____ .
a) Utilization
b) Conservation
c) Analysis
d) None of the above
43. Article (48-A) of Indian constitution deals with ____ .
a) Conservation and improvement of environment
b) Sustainable development
c) Water conservation
d) Deforestation
44. ____ technology is highly useful for environment and health.
a) Digital
b) Chemical
c) Information
d) Computational
45. An organization that works outside government ___ .
 a) NGO
b) Nature lowers
c) Activists
d) Antisocial
46. Weedcides is which type of pollutant : _____ .
a) Agro-pesticides
b) Domestic waste
c) Gases
d) None of these
47. Smog is formed due to chemical reaction of : ____ .
a) Sunlight + Dust
b) Sunlight + NOx
c) Sunlight + CO
d) Sunlight + Water
48. The paints get discolourised by _____ .
a) SO2 and HCl
b) SO2 and H2S
c) SO2 and O3
d) SO2 and NO2
49. Lead pollution reduces _____ formation.
a) Haemoglobin
b) Mucous
c) Hair
d) Digestive juice
50. Disinfection is done by using _____ .
a) Soda powder
b) Talc powder
c) Fluoride powder
d) Bleaching powder