Explore topic-wise MCQs in Science.

This section includes 1357 Mcqs, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.

801.

The mixture of gases around us is regarded as

A. ecosystem
B. atmosphere
C. environment
D. climate
Answer» C. environment
802.

Earth has tendency to absorb the energy from sun which is

A. 0.25
B. 0.2
C. 0.5
D. 0.05
Answer» D. 0.05
803.

Ozone has been depleted due to

A. CFS
B. UV rays
C. oil spill
D. deforestation
Answer» B. UV rays
804.

Thermosphere as compare to troposphere is

A. less dense
B. more dense
C. colder
D. hotter
Answer» B. more dense
805.

The gas which has percentage equal to 78% in air is the

A. oxygen
B. hydrogen
C. carbon dioxide
D. nitrogen
Answer» E.
806.

A year division based on moon's orbit around the sun is called a

A. day
B. hour
C. month
D. week
Answer» D. week
807.

Keck Telescope in Hawaii contains number of hexagonal mirrors equal to

A. 10
B. 36
C. 63
D. 34
Answer» C. 63
808.

The line which appear to join sky and earth is called

A. zenith
B. altitude
C. horizon
D. equator
Answer» D. equator
809.

The region of sky which contains all the stars making constellation is called

A. Ursa major
B. black hole
C. horizon
D. zenith
Answer» B. black hole
810.

A refracting telescope gather and focus light from distant objects by using

A. lenses
B. curved mirror
C. straight mirror
D. eye piece
Answer» B. curved mirror
811.

Distortions generally change the shape and size of

A. landmasses only
B. oceans only
C. landmasses and oceans both
D. whole earth
Answer» D. whole earth
812.

In receiving stations, the data is then processed using

A. hybrid computers
B. digital computers
C. super computers
D. portable computers
Answer» D. portable computers
813.

Earth has its own natural magnetic field which produces

A. magnetic poles
B. geographic poles
C. electric poles
D. undefined poles
Answer» B. geographic poles
814.

The tops of hills, mountains and depressions are shown by

A. straight contour lines
B. dotted contour lines
C. bold contour lines
D. closed circles of contour lines
Answer» E.
815.

In general, roads, railways, buildings and bridges are colored

A. white
B. black
C. green
D. white and black
Answer» C. green
816.

Lava plains which are dark and large regions on moon are known as

A. Maria
B. crate
C. Luna
D. impact
Answer» B. crate
817.

The Galilean satellites are the moons of

A. Mars
B. Venus
C. Saturn
D. Jupiter
Answer» E.
818.

The rotation of Uranus is

A. prograde
B. retrograde
C. both a and b
D. none of them
Answer» C. both a and b
819.

The weight on Earth will be left on Mercury only

A. 0.83
B. 0.39
C. 0.38
D. 0.33
Answer» D. 0.33
820.

Prime meridian runs from

A. north pole to south pole
B. south pole to east
C. north pole to west
D. north pole to east
Answer» B. south pole to east
821.

A flat representation of Earth's curved surface is known as a

A. globe
B. map
C. graph
D. sketch
Answer» C. graph
822.

Reading a topographic map takes

A. time
B. practice
C. energy
D. specialization
Answer» C. energy
823.

After the projection of map on the paper cone, the cone is

A. washed
B. bleached
C. rolled
D. unrolled
Answer» E.
824.

The receivers on Earth calculate the place's

A. latitude and longitude
B. latitude and elevation
C. longitude and elevation
D. latitude, longitude and elevation
Answer» E.
825.

1L (1 liter) is equal to

A. 1x103cm3
B. 1x102dm3
C. 1x101m3
D. 1x10-3km3
Answer» B. 1x102dm3
826.

One kilometer is equal to

A. 1x102m
B. 1x104m
C. 1x102dm
D. 1x104dm
Answer» E.
827.

The height, width and length of irregular objects is difficult to measure e.g.

A. rock
B. box
C. cone
D. ball
Answer» B. box
828.

People used to study the oceanic surface only, modern technology aided them in studying inside as well. The first technology that helped in such a way is

A. SCUBA divers
B. Miniature research submarines
C. Megatronic sharks
D. Yachts
Answer» C. Megatronic sharks
829.

An explanation that ties together many theories and observations is known as a

A. theorem
B. theory
C. method
D. calibration
Answer» C. method
830.

In reference to light, nonmetallic minerals

A. allow light to pass through
B. don't allow light to pass through
C. may allow light to pass through
D. allow light to refract
Answer» D. allow light to refract
831.

If the minerals are too far down the Earth's crust, a special machinery is used i.e.

A. vertical shafts
B. horizontal passageways
C. Continuous mining machine
D. haul trucks
Answer» B. horizontal passageways
832.

1 cm3 of gold contains

A. 1.9 times more matter than 1 cm3 of water
B. 19 times more matter than 1 cm3 of water
C. 3.8 times more matter than 1 cm3 of water
D. 38 times more matter than 1 cm3 of water
Answer» C. 3.8 times more matter than 1 cm3 of water
833.

An example of nonmetallic mineral could be

A. nickel
B. cobalt
C. zinc
D. astatine
Answer» E.
834.

Color is not the best way to identify impurities because of factors such as

A. density
B. impurities
C. mass
D. size
Answer» C. mass
835.

The motion of plate which is divergent is a major fault type

A. strike-slip fault
B. reverse fault
C. normal fault
D. error
Answer» D. error
836.

Second and fastest seismic waves are the

A. s wave
B. shear waves
C. both a and b
D. p wave
Answer» D. p wave
837.

Surface waves are different from S waves in a sense they are

A. slow
B. less destructive
C. harmless
D. steady
Answer» B. less destructive
838.

S wave is responsible for the movement which is

A. forth and back
B. side to side
C. oscillation
D. to all sides
Answer» C. oscillation
839.

The information which tells when and where earthquake will occur is referred to as

A. earthquake hazard
B. earthquake forecasting
C. earthquake hypothesis
D. none of them
Answer» C. earthquake hypothesis
840.

Another name for s wave is

A. secondary wave
B. selected wave
C. surface wave
D. strong wave
Answer» B. selected wave
841.

A prediction of some area which is likely to have damaging earthquakes in future is called

A. earthquake hazard
B. earthquake forecasting
C. earthquake hypothesis
D. none of them
Answer» B. earthquake forecasting
842.

An area where few earthquakes occurs now but in history it has strong earthquakes is called

A. gap prediction
B. gap hypothesis
C. seismic waves
D. seismic gap
Answer» E.
843.

The process of tracing earthquake motion is called

A. seismologist
B. seismograph
C. seismogram
D. epicenter
Answer» D. epicenter
844.

The point on which the first motion is felt is called

A. focus
B. epicenter
C. center
D. boundary
Answer» B. epicenter
845.

The layer in which temperature is increased with in increase in altitude is the

A. troposphere
B. stratosphere
C. mesosphere
D. thermosphere
Answer» E.
846.

The outermost layer of the earth is called

A. core
B. crust
C. mantle
D. ozone
Answer» C. mantle
847.

The atmosphere of Venus is

A. thin and clear
B. thick but clear
C. thin but cloudy
D. thick and cloudy
Answer» E.
848.

The user can use GIS to make

A. complex analyses only
B. display maps only
C. complex analyses and display maps
D. none of these
Answer» D. none of these
849.

The grid system can be used to find locations north and south of

A. equator
B. tropics
C. latitude
D. longitude
Answer» B. tropics
850.

Secondly, the cone touches the globe at

A. only one line of longitude
B. all lines of longitude
C. all lines of latitude
D. no line
Answer» C. all lines of latitude