Explore topic-wise MCQs in Environmental Science.

This section includes 155 Mcqs, each offering curated multiple-choice questions to sharpen your Environmental Science knowledge and support exam preparation. Choose a topic below to get started.

101.

Some large lakes in temperate latitudes have a moderating influence upon the climate of adjacent land surfaces. Such an influence may develop when ________

A. he water is shallow
B. he lake is high above sea level
C. revailing out-blowing winds cross the lake in winter
D. he lake is a basin of inland drainage
Answer» D. he lake is a basin of inland drainage
Discussion
102.

Why the Earth is having its own atmosphere?

A. inds
B. louds
C. ravity
D. otation of the Earth
Answer» D. otation of the Earth
Discussion
103.

Temperate cyclones bring along with them ________

A. leasant weather
B. nowfall and hail
C. hunderstorms and torrential rainfall
D. ild rainfall
Answer» E.
Discussion
104.

Precipitation takes place when ________

A. he sky is overcast with clouds
B. emperature of moisture in air suddenly increases
C. emperature of moisture in air sharply decreases
D. inds begin to blow in a circular motion
Answer» C. emperature of moisture in air sharply decreases
Discussion
105.

The amount of actual water vapour of air is known as ________

A. bsolute humidity
B. ew point
C. elative humidity
D. ondensation point
Answer» B. ew point
Discussion
106.

A sudden fall in the barometric reading indicates ________

A. ain
B. torm
C. ine weather
D. xtreme cold
Answer» C. ine weather
Discussion
107.

Which of the following colour types do not indicate fair or fine weather?

A. irrus
B. umulus
C. ltocumulus
D. umulonimbus
Answer» E.
Discussion
108.

The correct sequence of different layers of the atmosphere from the surface of the Earth upwards is ________

A. roposphere, Stratosphere, Ionosphere, Mesosphere
B. tratosphere, Troposphere, Ionosphere, Mesosphere
C. roposphere, Stratosphere, Mesosphere, Ionosphere
D. tratosphere, Troposphere, Mesosphere, Ionosphere
Answer» D. tratosphere, Troposphere, Mesosphere, Ionosphere
Discussion
109.

Which of the following is produced by the rapid ascent of moist air?

A. rost
B. og
C. ail
D. now
Answer» D. now
Discussion
110.

Which one of the following is the cloud that is dark-grey or black, found at very low height and brings the real rain?

A. ltocumulus
B. irrus
C. irrostratus
D. imbostratus
Answer» E.
Discussion
111.

What is the name of the layer above Earth's surface which is located at the height of 8km from poles and 16km from the equator?

A. esosphere
B. tmosphere
C. roposphere
D. tratosphere
Answer» D. tratosphere
Discussion
112.

Which one of the following is a type of planetary wind?

A. onsoons
B. oo
C. esterlies
D. ornadoes
Answer» D. ornadoes
Discussion
113.

Which one among the following statements relating to a cyclone is not correct?

A. t is a wind circulation system with a low pressure at the centre
B. t brings about sudden change In weather condition in an area
C. ind movement towards the low pressure centre of a cyclone is clockwise in the northern hemisphere
D. t is known as hurricane in West Indies
Answer» D. t is known as hurricane in West Indies
Discussion
114.

The dry wind 'Santa Ana' blows in ________

A. iberia
B. rgentina
C. witzerland
D. alifornia
Answer» E.
Discussion
115.

What is true with regard to Jet Streams?1. High velocity winds2. Blow from west to east3. Blow in upper troposphere near the tropopause4. Blow in the mesosphere

A. and 3
B. and 4
C. , 2 and 3
D. , 2 and 4
Answer» D. , 2 and 4
Discussion
116.

The most important factor in thunderstorms development is ________

A. tmospheric stability
B. tmospheric instability
C. bundance of moisture
D. emperature inversion
Answer» C. bundance of moisture
Discussion
117.

The jet aircrafts fly very easily and smoothly in the lower stratosphere. What could be the appropriate explanation?1. There are no clouds or water vapour in the lower stratosphere.2. There are no vertical winds in the lower stratosphere.Which of the statements given above is/are correct in this context?

A. only
B. only
C. oth 1 and 2
D. either 1 nor 2
Answer» D. either 1 nor 2
Discussion
118.

At low elevation which among the following clouds are to be found ?

A. irrus
B. imbus
C. umulus
D. tratus
Answer» C. umulus
Discussion
119.

What is the percentage of Nitrogen in atmosphere of the Earth?

A. 0.94
B. 0.03
C. 8.03
D. 5.02
Answer» D. 5.02
Discussion
120.

The hot and dry winds that help in the ripening of grapes in the Alps region is ________

A. hi nook
B. oehn
C. istral
D. oaring Forties
Answer» C. istral
Discussion
121.

Which of the following is/are characteristic of a depression in the southern hemisphere?I. It is a mass of air whose isobars form an oval or circular shapeII. Pressure is high in the centre and decreases towards the outsideIII. Air moves anti-clockwise

A. only
B. I only
C. and III
D. ll three
Answer» B. I only
Discussion
122.

Countries favourably influenced by Westerlies are ________

A. estern Europe, British Columbia and East of U.S.A.
B. outh-West Africa and South Chile
C. ew Zealand
D. ll of these
Answer» E.
Discussion
123.

Which of the following is specially true of anticyclones in the southern hemisphere?

A. he air moves in a circular manner
B. ressure increases from the outside to the centre
C. hey often form over continents
D. he air moves in an anti-clockwise direction
Answer» E.
Discussion
124.

Consider the following statements regarding general characteristics associated with tropical cyclones1. Tropical cyclones move with very low velocity over the oceans but become strong while moving over the land areas.2. They are confined to a particular period of the year (mainly summer) and normally move from east to west.Which of the statement(s) given above is/are correct?

A. only
B. only
C. oth 1 and 2
D. either 1 nor 2
Answer» C. oth 1 and 2
Discussion
125.

The Ozone hole is detected in the atmosphere, where is it located?

A. bove Arctic Ocean
B. bove Antarctica
C. bove India
D. bove Alaska
Answer» C. bove India
Discussion
126.

Where is Ozone layer found?

A. roposphere
B. onosphere
C. tratosphere
D. xosphere
Answer» D. xosphere
Discussion
127.

The water content in the atmosphere ________

A. s independent of temperature
B. ncreases as temperature increases
C. ecreases as temperature increases
D. ither increases or decreases with temperature increase
Answer» D. ither increases or decreases with temperature increase
Discussion
128.

Evening sun is not a shot as the mid-day sun. What is the reason?

A. n the evening, radiations travel slowly
B. n the evening, the temperature of the sun decreases
C. zone in atmosphere absorbs more light in the evening
D. n the evening, radiations travel larger distance through atmosphere
Answer» E.
Discussion
129.

The inner-most layer of the Earth is known as

A. ithosphere
B. esosphere
C. esthenosphere
D. arysphere
Answer» E.
Discussion
130.

Temperate lows are ________

A. ow pressure areas in cyclones
B. quatorial low pressure belt
C. olar regions which have very low temperatures
D. ub-polar low pressure belts
Answer» E.
Discussion
131.

A layer in the Earth's atmosphere called Ionosphere facilitates radio communication. Why?1. The presence of ozone causes the reflection of radio waves to Earth.2. Radio waves have a very long wavelength.Which of the statements given above is fare correct?

A. only
B. only
C. oth 1and 2
D. either 1 nor 2
Answer» E.
Discussion
132.

Westerlies in southern hemisphere are stronger and persistent than in northern hemisphere. Why?1. Southern hemisphere has less landmass as compared to northern hemisphere.2. Coriolis force is higher in southern hemisphere as compared to northern hemisphere.Which of the statements given above is fare correct?

A. only
B. only
C. oth 1 and 2
D. either 1 nor 2
Answer» B. only
Discussion
133.

The monsoon has well-developed cycle in ________

A. outh and South East Asia
B. orth Australia
C. ast United States
D. frica
Answer» B. orth Australia
Discussion
134.

The tropical cyclones - Hurricanes and Typhoons - develop and mature ________

A. t the same place
B. ver the land masses only
C. ver the water bodies only
D. nywhere in the tropical zone
Answer» E.
Discussion
135.

Which one of the following layers of the atmosphere is responsible for the deflection of radio waves?

A. roposphere
B. tratosphere
C. esosphere
D. onosphere
Answer» E.
Discussion
136.

Which one of the following statements is correct? Hurricanes ________

A. orm at the equator
B. re not as large as tornadoes
C. evelop over warm ocean areas
D. end to intensify when they move over land surfaces
Answer» D. end to intensify when they move over land surfaces
Discussion
137.

Atmospheric pressure exerted on earth is due to ________

A. ravitational pull of the earth
B. otation of earth
C. evolution of earth
D. neven heating of earth
Answer» B. otation of earth
Discussion
138.

Consider the following statements:1. Troposphere varies in its thickness between equator and poles.2. Stratosphere does not experience Normal Lapse Rate.3. Ozone layer occurs in the Mesophere.4. Ionosphere lies between Stratosphere and Mesosphere Which of these statements are correct?

A. and 2
B. and 3
C. and 4
D. , 2 and 4
Answer» B. and 3
Discussion
139.

Temperature generally decreases towards the poles because ________

A. ir movement is generally towards the. equator
B. old polar air masses prevent surface heating of the land
C. old surfaces do not absorb solar energy as readily as warm surfaces
D. rogressively lesser solar energy per unit area falls on the earth's surface as we move to polar regions
Answer» E.
Discussion
140.

In which layer, temperature increases dramatically?

A. onosphere
B. xosphere
C. tratosphere
D. roposphere
Answer» B. xosphere
Discussion
141.

The dense mass of small water drops on smoke particles in the lower layers of the atmosphere is ________

A. mog
B. rost
C. og
D. ew
Answer» B. rost
Discussion
142.

In the northern hemisphere, the wind blowing from the Horse latitudes to the Doldrums is called ________

A. esterly wind
B. rade wind
C. olar Easterly
D. et Stream
Answer» C. olar Easterly
Discussion
143.

Which of the following places are favourably influenced by the Trade winds?I. West IndiesII. BrazilIII. MexicoIV. Madagascar

A. and II
B. , II, III and IV
C. II and IV
D. I and IV
Answer» C. II and IV
Discussion
144.

Doldrums are ________

A. igh latitudes with heavy snow
B. quatorial zone with low pressure
C. igh pressure areas on mountains
D. ub-polar zone with high pressure
Answer» C. igh pressure areas on mountains
Discussion
145.

Atmospheric humidity is measured by ________

A. sychrometer
B. nemometer
C. ysimeter
D. ydrometer
Answer» B. nemometer
Discussion
146.

Which layer of the atmosphere is responsible for aurora formation?
A. Ozone layer
B. Stratosphere
C. Exosphere
D. Ionosphere
Answer» B. Stratosphere
Discussion
147.

Which_of_the_following_indicates_the_correct_order_of_the_principal_layers_of_the_earth’s_atmosphere_from_top_to_bottom?$#

A. Troposphere – Stratosphere – Mesosphere – Thermosphere – Exosphere
B. Thermosphere – Stratosphere – Troposphere – Mesosphere – Exosphere
C. Exosphere – Thermosphere – Mesosphere – Stratosphere – Troposphere
D. Exosphere – Mesosphere – Thermosphere – Stratosphere – Troposphere
Answer» E.
Discussion
148.

What is the atmospheric pressure at sea level?

A. 101325 Pa
B. 14.696 psi
C. 760 Torr
D. All of the mentioned
Answer» D. All of the mentioned
Discussion
149.

The planetary boundary layer belongs to which of the following atmospheric layers?

A. Exosphere
B. Ionosphere
C. Stratosphere
D. None of the mentioned
Answer» E.
Discussion
150.

Which_of_the_following_mentioned_layers_is_NOT_a_homosphere?

A. Exosphere
B. Troposphere
C. Ionosphere
D. Mesosphere
Answer» B. Troposphere
Discussion