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Learn CIVIL SERVICES MCQs with answers [Page 17 of Department 35]

161)  A layer in the Earth's atmosphere called Ionosphere facilitates radio communication. Why ?
I. The presence of ozone causes the reflection of radio waves to Earth
II. Radio waves have a very long wavelength

(A) I only
(B) II only
(C) Both I and II
(D) Neither I nor II
Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

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162) The deflection of the winds to the right in the northern hemisphere is caused by :

(A) revolution of the earth
(B) rotation of the earth
(C) uneven heating of the earth
(D) All the above
Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

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163) Atmospheric pressure exerted on earth is due to :

(A) rotation of earth
(B) revolution of earth
(C) gravitational pull
(D) uneven heating of earth
Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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164) Which one of the following has the highest wind velocity ?

(A) Typhoon
(B) Hurricane
(C) Cyclone
(D) Tornado
Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

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165) Ozone-hole in the atmosphere is largely caused by the presence of :

(A) Oxygen
(B) Hydrogen
(C) Chloro-floro-carbon
(D) Radio-active waste
Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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168) Where does most of the weather phenomena take place ?

(A) Ionosphere
(B) Troposphere
(C) Stratosphere
(D) Thermosphere
Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

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169) The term Roaring Forties is related to the

(A) Trade winds
(B) Planetary wind
(C) Westerlies
(D) Polar winds
Correct Answer - Option (C)

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170) Daily weather changes in the atmosphere are associated with :

(A) Troposphere
(B) Mesosphere
(C) Ionosphere
(D) Stratosphere
Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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