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.

1001.

The process of metamorphism in which the size or composition of mineral changes is known as

A. crystallization
B. decrystallization
C. recrystallization
D. precrystallization
Answer» D. precrystallization
1002.

In ocean, the lava erupts from

A. volcanoes
B. ocean beds
C. fissures in ocean beds
D. small dikes
Answer» D. small dikes
1003.

When Phyllite is exposed to heat and pressure it changes into

A. Garnet
B. Schist
C. Gneiss
D. Slate
Answer» C. Gneiss
1004.

Models are often used to explain

A. nature
B. theories
C. physics
D. universe
Answer» C. physics
1005.

All SI units are based on a number i.e.

A. 1
B. 0
C. 10
D. 2
Answer» D. 2
1006.

The source due to which astronomers can see through optical telescopes is

A. sound
B. laser
C. light
D. heat
Answer» D. heat
1007.

An advantage of using international system of units is that the scientists can share their

A. thoughts
B. ideas
C. observations and theories
D. observations and results
Answer» E.
1008.

Geochemists also study the distribution and effect of chemicals added to the environment by

A. human activity
B. industries and machinery
C. plants and aquatic life
D. dead decaying organisms
Answer» B. industries and machinery
1009.

A pattern, plan, representation or description designed to show the structure is known as a

A. sample
B. model
C. design
D. structure
Answer» C. design
1010.

1mL (1 milliliter) is equal to

A. 1x10-2L
B. 1x10-3L
C. 1x102L
D. 1x103L
Answer» C. 1x102L
1011.

To describe the length of a microscopic object, we use

A. meters
B. millimeters
C. centimeters
D. micrometers
Answer» E.
1012.

Imagine that you are a scientist and you have to put fossils in a crate to transport them to the museum. How many fossils will fit the crate? The answer depends on the

A. volume
B. mass
C. area
D. density
Answer» B. mass
1013.

People who make maps by the aid of satellites and computer mapping systems are known as

A. Geographers
B. Geologists
C. Cartographers
D. Aerial mappers
Answer» D. Aerial mappers
1014.

The surface on which rocks usually break and slide over each other is called a

A. fold
B. fault
C. tension
D. stress
Answer» C. tension
1015.

For almost 180 Million years ago Pangaea gradually broke in to

A. Laurasia
B. Gondwana
C. both a and b
D. Arabian Sea
Answer» D. Arabian Sea
1016.

Where there is collision among two tectonic plates the boundary is called

A. convergent
B. divergent
C. transform
D. sliding
Answer» B. divergent
1017.

The change in shape of rock is done by process

A. deformation
B. bending
C. sliding
D. renewing
Answer» B. bending
1018.

The highest mountain ranges which are in this world are made up of

A. folded mountains
B. fault block mountains
C. volcanic mountains
D. all of them
Answer» B. fault block mountains
1019.

Scientists who study earthquakes are known as

A. seismologist
B. cardiologist
C. archeologist
D. anthropologist
Answer» B. cardiologist
1020.

Drift hypothesis suggests continents were once

A. single landmass
B. puzzles of landmass
C. separate landmass
D. moving landmass
Answer» B. puzzles of landmass
1021.

If both ends of fold are horizontal of a rock layer then it is

A. anticline
B. syncline
C. monocline
D. decline
Answer» D. decline
1022.

AT mid-ocean ridges the molten rock consists of

A. iron
B. calcium
C. phosphorus
D. tin
Answer» B. calcium
1023.

Rocks which take more space are generally the ones which are

A. cooler
B. hotter
C. mild
D. brighter
Answer» C. mild
1024.

South American plate's thinnest part is the

A. oceanic crust
B. continental crust
C. mid-Atlantic Ocean
D. upper part of mantle
Answer» D. upper part of mantle
1025.

Severe storm which is formed over tropical oceans is called

A. hurricane
B. tornado
C. spiral
D. twister
Answer» B. tornado
1026.

Winds which blow from one direction in a given time are called

A. strong winds
B. south winds
C. Monsoon winds
D. prevailing winds
Answer» E.
1027.

Maritime polar over north pacific is

A. hot
B. wet
C. dry
D. warm
Answer» C. dry
1028.

The area with a lower pressure as compare to surrounding areas is called

A. anticyclones
B. cyclones
C. weather
D. climate
Answer» C. weather
1029.

Speed and direction may be measured with help of a

A. weather balloon
B. thermometer
C. barometer
D. anemometer
Answer» B. thermometer
1030.

When there occurs rainfall through freezing air it is called

A. sleet
B. rain
C. snow
D. fog
Answer» B. rain
1031.

A long period which includes covering of earth's surface with ice sheets is called

A. glacial period
B. ice age
C. both a and b
D. global warming
Answer» D. global warming
1032.

The dividing area of two air masses with respect to differences in densities and temperature is the

A. borderline
B. shoreline
C. front
D. frontline
Answer» D. frontline
1033.

Ice possesses alternative cold and warm periods, this was hypothesized in

A. Milankovitch theory
B. Bing bang theory
C. Ptolemaic theory
D. Mar well's theory
Answer» B. Bing bang theory
1034.

The cycle of sun is equal to

A. 11 years
B. 365 days
C. 24 hours
D. 100 years
Answer» B. 365 days
1035.

A front which is formed when a warm air mass is stuck between two colder ones is called

A. cold fronts
B. warm fronts
C. occluded fronts
D. stationary fronts
Answer» D. stationary fronts
1036.

The climate of a particular small area is called

A. macroclimate
B. microclimate
C. city climate
D. weather
Answer» C. city climate
1037.

Clouds with name nimbo are expected to produce

A. rain
B. snow
C. sleet
D. precipitation
Answer» E.
1038.

Fronts which cannot move quickly and are responsible for thunderstorm and rain are the

A. cold fronts
B. warm fronts
C. occluded fronts
D. stationary fronts
Answer» B. warm fronts
1039.

A wall of water which build up above ocean due to strong wind and low pressure is called

A. storm
B. storm surge
C. stormy wind
D. severe wind
Answer» C. stormy wind
1040.

The west lines of longitude lie between the angles

A. 0° and 180° longitude
B. 90° and 180° longitude
C. 180° and 360° longitude
D. 0° and 360° longitude
Answer» B. 90° and 180° longitude
1041.

Globes and maps are examples of

A. models
B. toys
C. objects
D. projects
Answer» B. toys
1042.

Contour lines far away show

A. no slope
B. gentle slope
C. steep slope
D. variable slope
Answer» C. steep slope
1043.

The true north is the pole that sets under the category of

A. magnetic poles
B. electric poles
C. geographic poles
D. undefined poles
Answer» D. undefined poles
1044.

Large maps like maps showing countries or continents would have

A. less distortion
B. more distortion
C. zero distortion
D. distortion depending on map scale
Answer» C. zero distortion
1045.

Compared to combustion engines, the fuel cells are

A. less efficient
B. moderately efficient
C. more efficient
D. more violent
Answer» D. more violent
1046.

Photochemical haze that forms when sunlight acts on industrial pollutants or burning fuels is known as

A. fog
B. mist
C. smog
D. smoke
Answer» D. smoke
1047.

To preserve the resources for the future, we have to

A. look for more
B. save them
C. consume more of them
D. use them more frequently
Answer» C. consume more of them
1048.

The temperature required by fusion can be withstood by

A. uranium
B. titanium
C. plutonium
D. no material
Answer» E.
1049.

Crude oil is so valuable that it is often called

A. white gold
B. platinum
C. black gold
D. black pearl
Answer» D. black pearl
1050.

The conversion of energy takes place by reacting two elements i.e.

A. hydrogen and oxygen
B. oxygen and nitrogen
C. hydrogen and nitrogen
D. argon and radon
Answer» B. oxygen and nitrogen