Physical Geography (Part-II) (Railway)

Total Questions: 32

31. When did the ozone levels in the atmosphere start to reduce? [RRB Group D CBT Exam, 09.09.2022 (Shift-II)]

(1) 1995
(2) 1965
(3) 1980
(4) 1990

Correct Answer: (3) 1980

Solution:In the early 1980s, through a combination of ground-based and satellite measurements, scientists found that ozone levels were thinning dramatically over the South Pole each spring.

• This thinning of the ozone layer over Antarctica came to be known as the ozone hole.

• O zone layer is a part of stratospher.

32. Which zone separates the troposhere from the stratoshpere ? [RRB Group 'D' CBT Exam, 14.09.2022 (Shift-II)]

(1) Tropopause
(2) Stratopause
(3) Thermopause
(4) Mesopause

Correct Answer: (2) Stratopause

Solution:The Tropopause is the boundary in the Earth's atmosphere between the troposphere and the stratosphere.

• It is one of the lowest layers of the Earth's atmosphere and is the layer in which most weather phenomena take place.

• The troposphere ranges in height from an average of 9 km at the poles, to 17 km at the Equator.

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Physical Geography (Part-II) (Railway)

31. When did the ozone levels in the atmosphere start to reduce? [RRB Group D CBT Exam, 09.09.2022 (Shift-II)]

32. Which zone separates the troposhere from the stratoshpere ? [RRB Group 'D' CBT Exam, 14.09.2022 (Shift-II)]

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