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.

Bile juice is secreted by

A. RBC
B. stomach
C. intestine
D. gall bladder
Answer» E.
2.

Which structure helps in transport of water in plants

A. phloem
B. leaf
C. bark
D. xylem
Answer» E.
3.

The organisms that can make their own food are called

A. producers
B. consumers
C. secondary consumers
D. decomposers
Answer» B. consumers
4.

Which is the bone that is present in forelimb

A. radius
B. femur
C. ribs
D. sternum
Answer» B. femur
5.

Which is the largest excretory organ of the body

A. lungs
B. skin
C. liver
D. none of these
Answer» C. liver
6.

Which one is herbivore

A. cat
B. dog
C. cow
D. lion
Answer» D. lion
7.

The brain is enclosed in a bony case called

A. diaphragam
B. vertebral column
C. cranium
D. vertebrae
Answer» D. vertebrae
8.

The Nobel prize in physics for the discovery of the law of photoelectric effect was awarded to

A. Hahn
B. Einstein
C. Rontgen
D. Rutherford
Answer» C. Rontgen
9.

The fact that universe is expanding was discovered by

A. Hahn
B. Hubble
C. Rontgen
D. Rutherford
Answer» C. Rontgen
10.

X-rays were discovered by

A. Hahn
B. Hubble
C. Rontgen
D. Rutherford
Answer» D. Rutherford
11.

Wind speed is measured by

A. Anemometer
B. Barometer
C. Ceilometer
D. Galvanometer
Answer» B. Barometer
12.

When gas is ionized, ________ forms.

A. Molecule
B. Element
C. Plasma
D. Current
Answer» D. Current
13.

The most abundant form of matter in the universe is

A. Solid
B. Liquid
C. Gas
D. Plasma
Answer» E.
14.

A loudspeaker changes ________ energy into sound energy.

A. North pole
B. Electrical
C. Light
D. Kinetic
Answer» C. Light
15.

The strongest part(s) of a magnet is/are

A. Carnot
B. South pole
C. North and south pole
D. Median of north and south pole
Answer» D. Median of north and south pole
16.

Wind is caused by

A. Difference in atmospheric pressure
B. Difference in atmospheric temperature
C. Rotation of the Earth
D. Revolution of the Earth
Answer» B. Difference in atmospheric temperature
17.

Which non-metallic element is liquid at room temperature?

A. Bromine
B. Flourine
C. Chlorine
D. Phosphorous
Answer» B. Flourine
18.

The horizontal rows of the periodic table are called

A. Groups
B. Periods
C. Sets
D. Matrices
Answer» C. Sets
19.

Battery charger converts electrical energy into ________ energy.

A. Kinetic
B. Potential
C. Chemical
D. Nuclear
Answer» D. Nuclear
20.

The vertical coloumns of the periodic table are called

A. Groups
B. Periods
C. Sets
D. Matrices
Answer» B. Periods
21.

Which from the following has the greatest penetrating power?

A. Alpha
B. Beta particles
C. Gamma rays
D. All three have same penetrating power
Answer» D. All three have same penetrating power
22.

Which from the following has the greatest speed?

A. The land cools faster than the water in the sea
B. Beta
C. Gamma
D. None
Answer» D. None
23.

The branch of science which study the interaction between matter and radian energy is called

A. Thermochemistry
B. Polymer chemistry
C. Spectroscopy
D. Electrochemistry
Answer» D. Electrochemistry
24.

Which from the following has the greatest ionising power?

A. Alpha particles
B. Beta particles
C. Gamma rays
D. All three has same ionising power
Answer» B. Beta particles
25.

The speed of sound is slowest in

A. Solids
B. Liquids
C. Gasses
D. Vaccum
Answer» D. Vaccum
26.

The SI unit of thermodynamic temperature is

A. Celsius
B. Fahrenheight
C. Kelvin
D. None of these
Answer» D. None of these
27.

The shortest distance between crest to crest is called

A. Phare
B. thoughs
C. Amplitude
D. Wavelength
Answer» E.
28.

The speed of sound is fastest in

A. Solids
B. Liquids
C. Gasses
D. Vaccum
Answer» B. Liquids
29.

All electromagnetic waves have the same

A. Frequency
B. Amplitude
C. Wavelength in vaccum
D. Speed in vaccum
Answer» E.
30.

Which electromagnetic wave has the shortest wavelength?

A. Frequency
B. X-rays
C. Microwaves
D. Radio waves
Answer» B. X-rays
31.

Which electromagnetic wave has the longest wavelength?

A. Gamma rays
B. X-rays
C. Microwaves
D. Radio waves
Answer» E.
32.

An instrument used to measure gas pressure is

A. Ammeter
B. Manometer
C. Galvanometer
D. Barometer
Answer» C. Galvanometer
33.

An instrument used to measure atmospheric pressure is

A. Ammeter
B. Manometer
C. Galvanometer
D. Barometer
Answer» E.
34.

The vernier calipers is used to measure

A. Length
B. Time
C. Temperature
D. Viscority
Answer» B. Time
35.

1 tonne = ________ kg

A. 100
B. 400
C. 1000
D. 4000
Answer» D. 4000
36.

The anode is the electrode connected to the ________ terminal of a battery.

A. Positive
B. Negative
C. Neutral
D. Free
Answer» B. Negative
37.

Atomic clock is used to measure ________ intervals of time.

A. Very short
B. Short
C. Very long
D. Long
Answer» B. Short
38.

Molecules with identical molecular formulae but with different structural formulae are called

A. Positive
B. Isotopes
C. Atomic number
D. Mass number
Answer» C. Atomic number
39.

Ships use ________ to find the depth of the ocean beneath them.

A. Pictches
B. Echoes
C. Frequencies
D. None of these
Answer» C. Frequencies
40.

Earths troposphere extends from the Earths surface to an average height of about ________ km.

A. 10
B. 12
C. 15
D. 17
Answer» C. 15
41.

The science of lightning is called

A. Aerology
B. Meteorology
C. Electeorology
D. Fulminology
Answer» E.
42.

The Earths internal heat mainly comes from

A. Liquid hydrogen
B. Chemical reactions
C. Radioactive decay
D. Molecular kinetic energy
Answer» D. Molecular kinetic energy
43.

On average, Air contains ________ % of water vapour.

A. 1
B. 3
C. 5
D. 7
Answer» B. 3
44.

There are different reasons on the Earth because of

A. Rotation of the Earth
B. Revolution of the Earth
C. The Earths axis is tilted
D. The Earths distance from the Sun
Answer» D. The Earths distance from the Sun
45.

We live on the Earths

A. Crust
B. Outer core
C. Crust
D. Mantle
Answer» D. Mantle
46.

The thickest layer of the Earth is

A. Crust
B. Inner core
C. Outer core
D. Mantle
Answer» E.
47.

The ozone layer is at height of ________ kilometers from the surface of the Earth.

A. 10 to 20
B. 20 to 30
C. 30 to 40
D. 40 to 50
Answer» C. 30 to 40
48.

The interior structure of the Earth is divided into ________ layers.

A. 4
B. 5
C. 6
D. 7
Answer» C. 6
49.

The ozone layer was discovered by

A. F.W. Aston and J.J Thomson
B. Albert Einstein
C. Rutherford
D. Charles Fabry and Henri Buisson
Answer» E.
50.

The whole Earth can be covered by ________ geo-stationary satellites.

A. 3
B. 4
C. 5
D. 6
Answer» B. 4