41) Which one of the following is the correct order of biological organization ranging from organism to biosphere ?
(a) Population → Ecosystem → Community → Landscape
(b) Landscape → Community → Ecosystem → Population
(c) Population → Community → Ecosystem → Landscape
(d) Population → Landscape → Community → Ecosystem
Ans: (c) Population → Community → Ecosystem → Landscape
42) Which one of the following is not correctly matched?
Green House Gas – Source
(a) Carbon dioxide – Thermal Power Stations
(b) Chloro fluro carbon – Automobile
(c) Nitrous Oxide – Waterlogged Paddy fields
(d) Sulphur dioxide – Brick Kilns
Ans: (b) Chloro fluro carbon – Automobile
43) Which one of the following atmospheric changes takes place due to green house effect?
(a) Increase in carbon dioxide concentration in atmosphere
(b) Increase in humidity in atmosphere
(c) Increase in biological population
(d) Increase in wind speed
Ans: (a) Increase in carbon dioxide concentration in atmosphere
44) ‘The Decade of Sustainable Energy for All’ is the initiative of :
(a) United Nations
(b) India
(c) Germany
(d) World Bank
Ans: (a) United Nations
45) Bhopal Gas Tragedy was caused due to the leakage of :
(a) Methyl Isocynate
(b) Nitrogen dioxide
(c) Sulphur dioxide
(d) Carbon monoxide
Ans: (a) Methyl Isocynate
46) Which one of the following is not correctly matched?
Pollutant – Disease caused
(a) Mercury – Minamata disease
(b) Cadmium – Itai – Itai disease
(c) Nitrate Ion – Blue baby syndrome
(d) Fluoride Ion – Indigestion
Ans: (d) Fluoride Ion – Indigestion
47) Which of the following is considered to be the optimum concentration of carbon dioxide for natural balance in atmosphere?
(a) 0.02 %
(b) 0.03%
(c) 0.04%
(d) 0.05%
Ans: (c) 0.04%
48) Amount of rain depends on :
(b) Humidity in atmosphere
(c) Water cycle
(d) Temperature
49) Which one of the following is not correctly matched?
(b) Earth day – 22nd April
(c) Anti – tobacco day – 5th May
(d) Ozone day – 16th September
50) Biodiversity has maximum danger from
(b) Improper agricultural operations
(c) Climate change
(d) Water pollution