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.

51.

A highest point in a wave is its

A. troughs
B. crest
C. wave length
D. wave direction
Answer» C. wave length
52.

A rise in sea level near the shore due to strong winds is called

A. swell
B. tsunami
C. storm urge
D. whitecap
Answer» D. whitecap
53.

The area where the wave tumble first is called

A. surf
B. breaker
C. undertow
D. long shore
Answer» C. undertow
54.

The surface facing the moon needs to come back on same place after

A. 24 hours
B. 48 hours
C. 56 hours
D. 12 hours
Answer» B. 48 hours
55.

The area between two breaker zones is called

A. surf
B. breaker
C. undertow
D. long shore
Answer» B. breaker
56.

Oil tankers are now built with double hulls instead of one to avoid

A. oil spill
B. exposure of air
C. high cost
D. long distance
Answer» B. exposure of air
57.

Groups of marine life includes

A. plankton
B. nekton
C. Benthos
D. all of them
Answer» E.
58.

The zone which included volume of water of entire ocean floor excluding continental shift is the

A. abyssal zone
B. hadal zone
C. neritic zone
D. oceanic zone
Answer» E.
59.

Due to public outcry USA now reserves $ 130 million for

A. defense
B. army
C. cosmetics
D. ocean protection
Answer» E.
60.

In 1989 a treaty was signed by 64 countries in regard to

A. digging in ocean
B. dumping in ocean
C. fishing in ocean
D. farming in ocean
Answer» C. fishing in ocean
61.

Bathymetric profile is referred to as map which shows ocean's

A. height
B. depth
C. length
D. width
Answer» C. length
62.

With the separation of tectonic plates there is formation of

A. mid-ocean ridge
B. rift valley
C. seamount
D. ocean trench
Answer» C. seamount
63.

The largest ocean in world is the

A. Pacific Ocean
B. Arctic Ocean
C. Indian Ocean
D. Atlantic Ocean
Answer» B. Arctic Ocean
64.

The percentage of chlorine in an ocean water is

A. 0.55
B. 0.077
C. 0.306
D. 0.033
Answer» B. 0.077
65.

The second layer of ocean water is called

A. surface zone
B. thermo cline
C. secondary zone
D. deep zone
Answer» C. secondary zone
66.

The planet which is not regarded as gas giant is the

A. Uranus
B. Neptune
C. Jupiter
D. Pluto
Answer» E.
67.

The distance of earth from sun is

A. just right
B. disturbing
C. alarming
D. unreasonable
Answer» B. disturbing
68.

Iron and nickel is present in

A. Stony meteorite
B. Metallic meteorite
C. new meteorite
D. older meteorite
Answer» C. new meteorite
69.

The only planet in outer solar system which is dense and small is the

A. Uranus
B. Neptune
C. Jupiter
D. Pluto
Answer» E.
70.

The outer most layer of Venus is comprises of

A. sulfuric acid
B. gases
C. flares
D. fumes
Answer» B. gases
71.

The Sun rises in Venus from

A. West
B. East
C. North
D. South
Answer» B. East
72.

A system which allows scientists to rate the hazard level of object coming towards earth is called

A. Torino scale
B. Spacecraft
C. Mission
D. Rector Scale
Answer» B. Spacecraft
73.

The value represented by color orange is

A. 1
B. 2,3,4
C. 5,6,7
D. 8,9,10
Answer» D. 8,9,10
74.

The largest satellite as compare to its planet in whole solar system is the

A. Europa
B. Ganymede
C. Calistro
D. Charon
Answer» E.
75.

The comet tail is made up of the charged particles called

A. electrons
B. protons
C. neutrons
D. ions
Answer» E.
76.

On a comparison between earthquakes of solid and liquid it was found waves will travel faster through

A. solid
B. liquid
C. molten
D. gas
Answer» B. liquid
77.

The tectonically active volcanic mountain of Pacific Ocean is regarded as

A. Ring of Fire
B. mountain of fire
C. Ring of volcano
D. Island of volcano
Answer» B. mountain of fire
78.

If there occurs a collision between two tectonic plates with continental crust collision it is the

A. continental-continental collision
B. continental-oceanic collision
C. oceanic-oceanic collision
D. moving apart
Answer» B. continental-oceanic collision
79.

As the sea floor widen out and get separated from mid-ocean ridge, it carries a record of

A. magnetic reversal
B. electric reversal
C. thermal reversal
D. static
Answer» B. electric reversal
80.

When the poles of Earth replace their poles the change is referred to as

A. magnetic reversal
B. electric reversal
C. thermal reversal
D. static
Answer» B. electric reversal
81.

The strong lower part of mantle is regarded as

A. lithosphere
B. asthenosphere
C. mesosphere
D. tectonic plates
Answer» D. tectonic plates
82.

The solid and dense center of Earth which extends to the center of Earth is the

A. outer core
B. inner core
C. mesosphere
D. asthenosphere
Answer» C. mesosphere
83.

Core doesn't contain

A. silicon
B. nickel
C. oxygen
D. iron
Answer» D. iron
84.

The total percentage of mantle of earth's surface is

A. 0.67
B. 0.01
C. 0.33
D. 0.45
Answer» B. 0.01
85.

The estimate thickness of outer most layers of earth is 5 to

A. 10 km
B. 100 km
C. 1000 km
D. 7 km
Answer» C. 1000 km
86.

Some limestone is made of the skeleton of tiny organisms known as

A. Coral
B. Bacteria
C. Virus
D. Fungi
Answer» B. Bacteria
87.

The largest of all igneous intrusions are

A. Stock
B. Batholith
C. Plutons
D. Sill
Answer» C. Plutons
88.

Rocks formed from the remains of once-living plants and animals are called

A. Clastic Sedimentary Rock
B. Chemical Sedimentary Rock
C. Organic Sedimentary Rock
D. Inorganic Sedimentary Rock
Answer» D. Inorganic Sedimentary Rock
89.

Rocks formed from dissolved minerals and water are known as

A. Clastic Sedimentary Rock
B. Chemical Sedimentary Rock
C. Organic Sedimentary Rock
D. Inorganic Sedimentary Rock
Answer» C. Organic Sedimentary Rock
90.

Contact metamorphism generally occurs near

A. igneous extrusions
B. sediment intrusions
C. igneous intrusions
D. sediment extrusions
Answer» D. sediment extrusions
91.

When the lighter materials from the surrounding gathered and rose, there is found creation of

A. ocean
B. dunes
C. continent
D. island
Answer» D. island
92.

The elongated circle along which Mars move around the sun is regarded as

A. ellipse
B. revolution
C. rotation
D. orbiting
Answer» A. ellipse
93.

A spinning of any body around its own axis is called its

A. movement
B. revolution
C. rotation
D. orbiting
Answer» D. orbiting
94.

The sun has approximate age of

A. 4.6 billion years
B. 2 billion years
C. 4 billion year
D. 6.4 billion years
Answer» B. 2 billion years
95.

The surface of sun is shrinking due to

A. heat
B. light
C. pressure
D. gravity
Answer» E.
96.

The upward pushing of aircraft by engine is called its

A. velocity
B. centrifugal force
C. gravity
D. thrust
Answer» E.
97.

John Glen was the first man who

A. went in space
B. orbit the earth
C. went on moon
D. died in first flight
Answer» C. went on moon
98.

Landsat program began in

A. 1972
B. 2003
C. 1973
D. 1937
Answer» B. 2003
99.

The flight of first space craft lasted for

A. 180 mins
B. 108 mins
C. 80 mins
D. 8 mins
Answer» B. 108 mins
100.

A long-term platform which provides medium for research in space is called

A. space craft
B. space station
C. spaceshuttle
D. space satellite
Answer» C. spaceshuttle