JKSSB Scientist -A Paper
Time Allowed : 2 hours (120 minutes)
1). There are ________ polar zones on earth.
1) 1
2) 2
3) 3
4) 4
2). Polar zones are circular areas between______ and the poles.
70° latitude
75° latitude
80° latitude
None
3) Polar zones have____months day and ____months night.
1)3 &4
2) 6&6
3) 1&3
4) 6&3
4).which zone lies astride the equator and extends to 10° latitude North and South.
1) Equatorial zone
2)Subtropical zone
3) Arctic zone
4) Polar zone
5).Which zone is transitional between middle latitude and Arctic zones
1.subarctic zone
2.polar zone
3.equatorial zone
4.Subtropical zone
6.The Environment is derived from Environner"
1) French word
2) Latin word
3) English word
4) Hindi word
7) The definition Environment is the sum total of water, air and land, inter relationships among themselves and also with living organisms is given by:
1.Environment protection Act, 1986
2.Air (prevention and control of pollution) Act 1981
3.Water (prevention and control of pollution) Act 1974
4.None of Above
8.Diatomic nitrogen in earths atmosphere is ____%
1.76.3%
2.77.5%
3.78.8%
4.79.5%
9.Half of the air mass is confined within___km above the sea level.
1. 2.5km
2. 6.5km
3.12.5km
4. 18.5 km
10.The earths fresh water reserve is only___percent of total hydrosphere.
1. 2.7
2.5.7
3.7.7
4.10
11.The process by which precipitation maybe held on different parts of the plants and trees is known as
Transportation
Transpiration
Interception
Evaporation
12.Major component of earths crust is (wt.%)
O2
Si
Al
Fe
13.Lithosphere is thicker in the continents than on the
Ocean floor
River beds
Lake
Deserts
14. Major elements of humus are
1. Carbon and hydrogen
2.carbon and nitrogen
3.phosphorus and sulfur
4.carbon and zinc
15. Which sphere is called life zone and is important part of environment
1.lithosphere
2. Biosphere
3.Hydrosphere
4.ionosphere
16. Which of the following is also called as giant ecosystem
1.lithosphere
2. Biosphere
3.Hydrosphere
4.ionosphere
17. The cycles that control cycling of minerals are called
Biogeochemical cycles
Chemical cycles
Mineral cycles
None of the Above
18. The more the carbon dioxide in the atmosphere, the more heat will be retained and hotter the atmosphere becomes. This phenomenon is termed
1.Greenhouse effect
2.bluehouse effect
3.cooling effect
4.None of the above
19. The atmosphere contains about ______% of oxygen.
20. Which of the following is sedimentary cycle?
Oxygen cycle
Nitrogen cycle
Sulphur cycle
Carbon cycle
21. The energy in an ecosystem is derived from
Plants
Animals
Solar radiation
Earth
22. Plants absorb strongly the ___&___light.
Blue and red
Green and black
Pink and green
All the above
23. Energy flows in _____________from sun to the decomposers in an ecosystem.
Unidirectional
Bidirectional
Tri directional
Multi directional
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