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Atmosphere MCQ Question and Answer | Geography MCQ Question

Atmosphere MCQ Questions and answers with easy explanations. Geography section provides you all type of mcq questions on Atmosphere with explanations. Atmosphere MCQ is important for exams like IBPS, SCC, UPSC, NEET etc. Page-10 section-1

Each section contains 100 MCQs on Atmosphere .
91
Frontal rain is caused by ________
Discuss
Answer & Solution
Answer: Option C
Solution:
Frontal (or Cyclonic) Rain is caused by cyclonic activity and it occurs along the fronts of the cyclone. It is formed when two masses of air of different temperature, humidity and density meets.
92
When the relative humidity is 50% and air temperature is 30°C, a cooling of air mass ________
Discuss
Answer & Solution
Answer: Option C
Solution:
When the relative humidity is 50% and air temperature is 30°C, a cooling of air mass decreases the relative humidity. Relative humidity (RH) is the percentage of the maximum amount of water vapour the air at the current temperature can hold before saturation.
93
Which of the following statements characterize the anticyclones?
1. Anticyclones are low pressure systems.
2. They are characterized by divergent wind circulation.
3. They are indicative of dry weather conditions.
Select the correct answer using the codes given below
Discuss
Answer & Solution
Answer: Option A
Solution:
Anticyclones are characterized by divergent wind circulation. They are indicative of dry weather conditions.
94
Very strong and cold icy winds that blow in the Polar regions are called ________
Discuss
Answer & Solution
Answer: Option C
Solution:
Very strong and cold icy winds that blow in the Polar regions are called Blizzards. A blizzard is a severe snow storm with winds in excess of 35 mph and visibility of less than a 1/4 mile for more than 3 hours.
95
In the northern hemisphere, currents are deflected to their right due to ________
Discuss
Answer & Solution
Answer: Option B
Solution:
The force, called the "Coriolis effect," causes the direction of winds and ocean currents to be deflected. In the Northern Hemisphere, wind and currents are deflected toward the right, in the Southern Hemisphere they are deflected to the left.
96
Which of these statements are correct regarding the atmosphere of the earth:
1. It is enveloping the earth because of gravity.
2. Its density decreases with increasing height from the surface of the earth.
3. Its characteristic composition is same throughout its height.
4. Amount of pressure it exerts on earth's surface at sea level is called one atm sphere.
Discuss
Answer & Solution
Answer: Option D
Solution:
Statements that are correct regarding the atmosphere of the earth are that It is enveloping the earth because of gravity, Its density decreases with increasing height from the surface of the earth and Amount of pressure it exerts on earth's surface at sea level is called one atm sphere.
97
Which are of the following is wrongly characterised?
Discuss
Answer & Solution
Answer: Option D
Solution:
The cold and dry Mistral blows in winter from the north to northwest, and travels down the Rhone valley, between the Alps and Massif Central, which opens to the Gulf of Lion.
98
When the wind is deflected due to the rotation of the Earth, it is called as ________
Discuss
Answer & Solution
Answer: Option A
Solution:
When the wind is deflected due to rotation of earth, it is known as geostrophic wind. Geostrophic winds come about because pressure gradient force and Coriolis force come into balance after the air begins to move.
99
The innermost layer is the core with a radius of about ________ km.
Discuss
Answer & Solution
Answer: Option D
Solution:
The core has, in total, a radius of 3500 km, but it is generally viewed as two distinct parts: the solid inner core, with a radius of 1220 km. the viscous outer core, with a radius of 2300 km.
100
The absence of which among the following causes the temperature of the atmosphere to decrease with ascent along with decreasing density of air?
I. Vegetation
II. Water
III. Carbon dioxide
IV. Oxygen
V. Nitrogen
Discuss
Answer & Solution
Answer: Option C
Solution:
The absence of water and carbon dioxide causes the temperature of the atmosphere to decrease with ascent along with decreasing density of air.