Environment & Ecology
72 questions available
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Q61.The main cause of air pollution is ____?
Correct Answer: A
The main cause of air pollution is Burning Of Fuels. This description follows from the defining characteristics and established facts associated with the subject.
Q62.The ozone layer is at height of____kilometers from the surface of the Earth?
Correct Answer: B
The ozone layer is at height of 20 to 30 kilometers from the surface of the Earth. Astronomical observations and measurements establish this relationship among the relevant celestial bodies.
Q63.The pyramid of energy in any ecosystem is ____?
Correct Answer: A
The pyramid of energy in any ecosystem is Always upright. The stated result follows from the relevant physical relationship between force, matter, motion, or energy.
Q64.The thermosphere extends from an altitude of ____ to the base of ____ at ____?
Correct Answer: C
The thermosphere extends from an altitude of 85 km, Exosphere, 690 km to the base of 85 km, Exosphere, 690 km at 85 km, Exosphere, 690 km. This description follows from the defining characteristics and established facts associated with the subject.
Q65.The unit to measure the quantity of Ozone in atmosphere is ?
Correct Answer: A
The unit to measure the quantity of Ozone in atmosphere is Dobson. Its geographic position or physical characteristics account for the description given.
Q66.The unit to measure the quantity of Ozone in atmosphere is?
Correct Answer: A
The unit to measure the quantity of Ozone in atmosphere is Dobson. Its geographic position or physical characteristics account for the description given.
Q67.There is a hole in the Ozone Layer at____?
Correct Answer: A
There is a hole in the Ozone Layer at South Pole. This description follows from the defining characteristics and established facts associated with the subject.
Q68.What is the chemical formula of Ozone?
Correct Answer: C
The chemical formula of Ozone is O3. The formula identifies the elements present and the number of atoms of each element in one molecule or formula unit.
Q69.What prevents the earth’s atmosphere from drifting away into space?
Correct Answer: A
What prevents the earth’s atmosphere from drifting away into space: Gravity. Astronomical observations and measurements establish this relationship among the relevant celestial bodies.
Q70.Which layer of the atmosphere reflects radio waves back to the earth’s surface?
Correct Answer: D
Ionosphere is layer of the atmosphere reflects radio waves back to the earth’s surface. Astronomical observations and measurements establish this relationship among the relevant celestial bodies.
Q71.The zone of atmosphere in which ozone layer is present is?
Correct Answer: C
The ozone layer resides in the Stratosphere, roughly 15-35 km above Earth's surface, where it absorbs most of the Sun's harmful UV radiation.
Q72.At approximately what altitude is most of the ozone layer found?
Correct Answer: B
Most atmospheric ozone is concentrated in the stratosphere roughly 20–30 km above Earth.