Explore topic-wise MCQs in Testing Subject.

This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.

1.

Assertion (A) : Out in space, the sky looks dark and black, instead of blue.Reason (R) : There is no atmosphere.

A. If (A) and (R) are correct and (R) is the correct explanation of (A)
B. If (A) and (R) are correct but (R) is not the correct explanation of (A)
C. If (A) is true but (R) is false
D. If (A) is false but (R) is true
Answer» B. If (A) and (R) are correct but (R) is not the correct explanation of (A)
2.

Assertion (A) : Only a minute portion of solar radiation is intercepted by the earth.Reason (R) : Other planets are obstructing the path of sun ray's

A. Both (A) and (R) are correct and (R) explains (A)
B. Both (A) and (R) are correct but (R) does not explain (A)
C. (A) is true but (R) is false
D. (A) is false but (R) is true
Answer» D. (A) is false but (R) is true
3.

Assertion (A) : The warmer portions of the water are less dense and therefore, they rise.Reason (R): The cooler portions of the water fall because they are denser.

A. If (A) and (R) are correct and (R) is the correct explanation of (A)
B. If (A) and (R) are correct but (R) is not the correct explanation of (A)
C. If (A) is true but (R) is false
D. If (A) is false but (R) is true
Answer» C. If (A) is true but (R) is false
4.

Assertion (A) : The blue colour of the sky is due to Ray light scattering.Reason (R) : As light moves through the atmosphere, most of the longer wavelengths pass straight through.

A. If (A) and (R) are correct and (R) is the correct explanation of (A)
B. If (A) and (R) are correct but (R) is not correct explanation of (A)
C. If (A) is true but (R) is false
D. If (A) is false but (R) is true
Answer» C. If (A) is true but (R) is false
5.

Fohn and Chinook winds are

A. Caused by strong regional winds while passing over a mountain range
B. Caused by strong local wind
C. Caused by westerlies
D. Caused by humid westerlies
Answer» B. Caused by strong local wind
6.

Arrange the constituent gases of the atmosphere in descending order of their percentage to the total composition of the atmosphere.1. Nitrogen2. Oxygen3. Argon4. Carbon dioxideCode

A. 1-2-4-3
B. 1-4-2-3
C. 1-2-3-4
D. 1-4-3-2
Answer» B. 1-4-2-3
7.

Consider the following statements1. Nearly 99 percent of the total mass of the atmosphere lies within 30 km of the earth's surface.2. The proportion of ozone in the atmosphere increases to a maximum at about 60km from earth's surface.Which of the statements given above is / are correct ?

A. 1 only
B. 2 only
C. Both 1 and 2
D. neither 1 nor 2
Answer» B. 2 only
8.

The hot dust - laden wind blowing from Sahara desert to Mediterranean region is called the

A. Chinook
B. Fohn
C. Mistral
D. Sirocco
Answer» E.
9.

Jet streams blows

A. From west to east
B. From east to west
C. From north to south
D. None of the above
Answer» B. From east to west
10.

Fohn and Chinook winds are experienced in

A. The valleys of the northern Alps is Switzerland and on the eastern slopes on Rockies in North America
B. The eastern slopes of southern Alps in Switzerland and on the western slopes on Andes in South America
C. Po valley of France and in Newfoundland
D. Netherlands and New Zealand
Answer» B. The eastern slopes of southern Alps in Switzerland and on the western slopes on Andes in South America
11.

Anemometers is used to measure

A. The velocity of the earth
B. The velocity of the waves
C. The velocity of the winds
D. The velocity of earthquake waves
Answer» D. The velocity of earthquake waves
12.

Coriolis flow tends of turn

A. The flow of the air
B. The direction of the air
C. The velocity of the air
D. None of them
Answer» B. The direction of the air
13.

Local thunderstorms 'Norwesters' are prominent in

A. Punjab
B. West Bengal
C. Andhra Pradesh
D. Tamil Nadu
Answer» C. Andhra Pradesh
14.

Assertion (A) : The elevation increases, the amount of space between air particles increases causing less ability to transfer heat to the ground Reason (R) : The higher the elevation, the cooler the climate.

A. If (A) and (R) are true and (R) is the correct explanation of (A)
B. If (A) and (R) are true but (R) is not the correct explanation of (A)
C. If (A) is true but (R) is false
D. If (A) is false but (R) is true
Answer» B. If (A) and (R) are true but (R) is not the correct explanation of (A)
15.

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. 1 only
B. 2 only
C. Both 1 and 2
D. Neither 1 nor 2
Answer» D. Neither 1 nor 2
16.

Assertion (A) : Within the mesosphere, temperature decreases with increasing altitude.Reason (R) : This is due to deveasing solar heating and increasing cooling by CO2 radiative emission

A. If (A) and (R) are true and (R) is the correct explanation of (A)
B. If (A) and (R) are true but (R) is not the correct explanation of (A)
C. If (A) is true but (R) is false
D. If (A) is false but (R) is true
Answer» B. If (A) and (R) are true but (R) is not the correct explanation of (A)
17.

Assertion (A) : The top of the mesosphere, called the mesopause, is the coldest place on Earth.Reason (R) : Temperatures in the upper mesosphere fall as low as - 100 C varying according to latitude and season.

A. If (A) and (R) are true and (R) is the correct explanation of (A)
B. If (A) and (R) are true but (R) is not the correct explanation of (A)
C. If (A) is true but (R) is false
D. If (A) is false but (R) is true
Answer» B. If (A) and (R) are true but (R) is not the correct explanation of (A)
18.

Assertion (A) : The proximity to the equator affects the climate of a place.Reason (R) : The equator receives the more sunlight than anywhere else on earth.

A. If (A) and (R) are true and (R) is the correct explanation of (A)
B. If (A) and (R) are true but (R) is not the correct explanation of (A)
C. If (A) is true but (R) is false
D. If (A) is false but (R) is true
Answer» B. If (A) and (R) are true but (R) is not the correct explanation of (A)
19.

Hail is associated with

A. Thunder storm
B. Cyclone
C. Hurricane
D. Typhoons
Answer» B. Cyclone
20.

Drainage winds or katabolic winds blow

A. From higher to lower region
B. From lower to higher region
C. From equator to polar region
D. From equator to higher region
Answer» B. From lower to higher region
21.

The dry wind 'Santa Ana ' blows in

A. Silberia
B. Argentina
C. Switzerland
D. California
Answer» E.
22.

Assertion (A) : Carbon dioxide content of the atmosphere has increased in the last 200 years.Reason (R) : There has been widespread deforestation in many parts of the world.

A. Both (A) and (R) are true and (R) is the correct explanation of (A)
B. Both (A) and (R) are true but (R) is not the correct explanation of (A)
C. (A) is true but (R) is false
D. (A) is false but (R) is true
Answer» B. Both (A) and (R) are true but (R) is not the correct explanation of (A)
23.

Assertion (A) : Because of the Sun's UV radiation, Earth's upper atmosphere is partly (0.1% or less) ionized plasma at altitudes of 70-1500 km.Reason (R) : This region, ionosphere, is coupled to both the magnetosphere and the neutral atmosphere.

A. If (A) and (R) are true and (R) is the correct explanation of (A)
B. If (A) and (R) are true but (R) is not the correct explanation of (A)
C. If (A) is true but (R) is false
D. If (A) is false but (R) is true
Answer» C. If (A) is true but (R) is false
24.

In the Hadley cell, rising air is found in the

A. Subtropical high pressure zone
B. Trade winds
C. Westerlies
D. Inter - tropical convergence zone (ITCZ)
Answer» E.
25.

Assertion (A) : Carbon dioxide is an important greenhouse gas.Reason (R) : The human-caused increase in its concentration in the atmosphere has strengthened the greenhouse effect and has definitely contributed to global warming over the last 100 years.

A. If (A) and (R) are true and (R) is the correct explanation of (A)
B. If (A) and (R) are true but (R) is not the correct explanation of (A)
C. If (A) is true but (R) is false
D. If (A) is false but (R) is true
Answer» C. If (A) is true but (R) is false
26.

Assertion (A) : Solar radiation first and foremost heats the Earth's surface which in turn determines the temperature of the air above.Reason (R) : Heating of the air determines its stability, which affects cloud development and precipitation.

A. If (A) and (R) are true and (R) is the correct explanation of (A)
B. If (A) and (R) are true but (R) is not the correct explanation of (A)
C. If (A) is true but (R) is false
D. If (A) is false but (R) is true
Answer» C. If (A) is true but (R) is false
27.

One of the two belts of high atmosphere pressure that are centered, in the mean, near 30 N and 30 S latitudes is called

A. Polar winds
B. Trade winds
C. Prevailing Winds
D. Subtropical high - pressure belt
Answer» E.
28.

Which one of the following statements regarding EI Nino is NOT true ?

A. It is an extension of the Equatorial current towards
B. It is a occasional warm current leading to an increase of about 10
C. C in surface water temperatures
D. It develops as an temporary replacement of the usual cold Peruvian current
E. It cause and increase in planktons which thrive in the cold Peruvian current
Answer» E. It cause and increase in planktons which thrive in the cold Peruvian current
29.

The Effects of La Nina are

A. Cooler sea temperatures, high atmospheric pressure and drier air
B. Current bring nutrients up from the deep water, providing feast, rather than famine
C. Accompanying strong winds blow moisture away, making for cloudless skies and dry conditions in equatorial countries
D. All of the above
Answer» E.
30.

Which of the following statements is correct ? collision - coalescene process of precipitation is applicable to

A. Cloud which extend beyond freezing level
B. All types of clouds
C. Cumulonimbus clouds
D. Those clouds which do not extend beyond the freezing level
Answer» E.
31.

Thunderstorms originate from

A. Nimbostratus clouds
B. Altocumulus clouds
C. Stratus clouds
D. Cumulonimbus
Answer» E.
32.

The long-term state of the atmosphere is a function of a variety of intracting elements. They are

A. Solar radiation
B. Pressure systems ( and cyclone belts )
C. Topography
D. All of the above
Answer» E.
33.

The portion of the atmosphere which extends from the earth's surface up to 6-8 miles and experiences decrease in temperature at constant rate is

A. Stratosphere
B. Tropopause
C. Troposphere
D. Inosphere
Answer» D. Inosphere
34.

The standard instrument for measuring atmospheric pressure is

A. Mercury barometer
B. Anemometer
C. Galvanometer
D. Ammeter
Answer» B. Anemometer
35.

Generally over most parts of the earth, rain fall occurs commonly during

A. Summer
B. Spring
C. Autumn
D. Winter
Answer» B. Spring
36.

The ozone layer in the upper part of the atmosphere protects us from

A. Cosmic rays
B. ultrasonic waves
C. Infra - red rays
D. Ultraviolet rays
Answer» E.
37.

Which of the following is qualified as the proportion, or percentage of solar radiation of all wavelengths reflected by a body or surface to the amount incident upon it.

A. Radiation
B. Reflection
C. Insolation
D. Albedo
Answer» E.
38.

A line on a map which joins places having the same rainfall is called an

A. Isohyet
B. Isobar
C. Isotherm
D. Isohel
Answer» B. Isobar
39.

The combustion of coal and oil is a major source of which greenhouse gas ?

A. nitrous oxide
B. methane
C. CFC
D. <sub>s</sub>
E. none of the above
Answer» E. none of the above
40.

Scale used for recording weather condition is known as

A. Hydrometer
B. Hygrometer
C. Opisometer
D. Centigrade
Answer» E.
41.

Along with carbon dioxide, .......... is largely responsible for the greenhouse effect of the atmosphere

A. hydrogen
B. nitrogen
C. sulfer dioxide
D. water vapour
Answer» E.
42.

97% of the atmosphere lies with in ........ km of the surface of the earth.

A. 50 km
B. 29 km
C. 5 km
D. 15 km
Answer» D. 15 km
43.

The most important factors that affect climate around the world are

A. Distance from the Sea
B. Direction of Prevailing Winds
C. Proximity To The Equator
D. All of the above
Answer» E.
44.

The ozone layer lies in the

A. Troposphere
B. Stratosphere
C. Photosphere
D. Tropopause
Answer» C. Photosphere
45.

The lower layer of the atmosphere is known as

A. Mesosphere
B. Stratosphere
C. Ionosphere
D. Troposphere
Answer» E.
46.

What is the latent energy ?

A. It is a hidden energy or invisible energy
B. It is found in the form of stored energy
C. It is thermal energy
D. It is latent energy
Answer» B. It is found in the form of stored energy
47.

Separating the mesosphere from the stratosphere is transition zone called

A. Mesopause
B. Stratopause
C. Isothermal layer
D. None of these
Answer» C. Isothermal layer
48.

In the mesosphere, the atmosphere reaches its coldest temperatures (about - 90 Celsius ) at a height of approximately

A. 80 kilometers
B. 50 kilometers
C. 60 kilometers
D. 100 kilometers
Answer» B. 50 kilometers
49.

Wireless communication is reflected back to the earth's surface by the

A. Troposphere
B. Stratosphere
C. Ionosphere
D. Exosphere
Answer» C. Ionosphere
50.

The Kyoto convection identified 6 green house gases. A part from carbondioxide, Methane and Nitrous oxide, which of the following does not constitute the other three ?

A. Hexa chloride
B. Hexa flora carbon
C. Per flova carbon
D. Hydro flove carbon
Answer» B. Hexa flora carbon