Home
Current Affairs January 2024

What is the correct answer?

4

Credit for starting Space Science Research in India goes to

A. HJ Bhabha

B. SS Bhatnagar

C. V Sarabhai

D. CV Raman

Correct Answer :

C. V Sarabhai


Related Questions

What is the correct answer?

4

The brightest planet in the Solar System is

A. Jupiter

B. Mercury

C. Venus

D. Sirius

What is the correct answer?

4

In the fuse of an electrical installation blows out

A. replace the fuse by a thin wire

B. replace the fuse by a thick copper wire

C. replace the fuse by a fuse wire of proper rating

D. replace the fuse by nichrome wire

What is the correct answer?

4

A series of east moving still pictures can be made to appear as a moving picture because the eye

A. can focus very rapidly as pictures change

B. is quicker than the brain

C. can see two images separated only if the interval' between seeing them is more than' one-tenth of a second

D. can shut out some of the light

What is the correct answer?

4

When a bottle of perfume is opened in one corner of a room the smell spreads soon throughout the room. This is an example of

A. surface tension

B. capillarity

C. viscosity

D. diffusion

What is the correct answer?

4

The motion .of the pendulum of a wall clock is an example of

A. linear motion

B. vibratory motion

C. rotational motion

D. None of the above

What is the correct answer?

4

Velocity of sound in high altitudes is low because at such a height

A. the temperature is low

B. there is no air

C. the pressure is low

D. All the above

What is the correct answer?

4

The following are the atmospheric zones above the surface of the earth:
A) Troposphere
B) Ionosphere
C) Stratosphere
D) Exosphere
Select the correct sequence from the earth's surface on the basis of the codes given below:

A. ACBD

B. ABCD

C. CABD

D. BACD

What is the correct answer?

4

The number of galaxies that are visible without telescope on clear dark nights and away from bright lights is

A. one

B. two

C. three

D. infinite

What is the correct answer?

4

The device used to record the sound is

A. a microphone

B. a headphone

C. a phonograph

D. an amplifier

What is the correct answer?

4

A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without touching the sides or touching the bottom of the bucket. The reading of the spring balance

A. will increase

B. will decrease

C. does not change

D. varies with the increase of depth of the immersion of the iron piece

What is the correct answer?

4

The ozone layer absorbs

A. Cosmic rays

B. Infrared rays

C. All radiations of light

D. Ultra violet rays coming from the sun

What is the correct answer?

4

The mode of travel of heat energy from the sun across the empty space beyond the earth's atmosphere is known as

A. conduction

B. convection

C. radiation

D. absorption

What is the correct answer?

4

Sound waves

A. are electromagnetic waves

B. can easily pass through vacuum

C. are always transverse waves

D. require a material medium for propagation

What is the correct answer?

4

When light travels from one medium to another there is a change in its

A. velocity

B. wavelength

C. frequency

D. Both (a) and (b) above

What is the correct answer?

4

The unit of power in SI is

A. Joule

B. Newton

C. Joule/Sec

D. Erg/Sec

What is the correct answer?

4

Mercury does not stick to glass because

A. cohesive forces between the mercury molecules are greater than adhesive forces between mercury and glass molecules

B. the adhesive forces between mercury and glass molecules are greater than the cohesive forces

C. both the cohesive and adhesive forces are equal

D. None of the above

What is the correct answer?

4

The motion .of the pendulum of a wall clock is an example of

A. linear motion

B. vibratory motion

C. rotational motion

D. None of the above

What is the correct answer?

4

The method used to separate aluminium from a alumina is

A. electroplating

B. electrotyping

C. electrolysis

D. distillation

What is the correct answer?

4

It is more difficult to walk on ice than on a concrete road because

A. there is very little friction between the ice and feet pressing it

B. ice is soft when compared to concrete

C. there is more friction between the ice and feet

D. None of the above

What is the correct answer?

4

The temperature, surface features, length of days and nights of a planet depend on

A. its atmosphere

B. its distance from the sun

C. its rotation

D. All the above

What is the correct answer?

4

When two similar sources vibrate with slightly different frequencies, a regular rise and fall occurs in the loudness of tone. This phenomenon Is known as

A. doppler effect

B. beats

C. resonance

D. echo

What is the correct answer?

4

The extremely luminous objects located at the centre of some distant galaxies and which are sources of high energy electromagnetic radiation are known as

A. Nebulae

B. Quasars

C. Meteors

D. Comets

What is the correct answer?

4

The attraction between similar molecules is called

A. inertia

B. adhesion

C. cohesion

D. friction

What is the correct answer?

4

A workman was working on a rail track. A young boy at a distance holds his ear close to the railway track. The boy was able to hear the sound of each blow or the workman twice. It is because

A. speed of sound is greater in steel than in air

B. speed of sound is greater in air than in steel

C. part of sound waves is reflected between rail tracks

D. the boy's ears are at a different distance from the source

What is the correct answer?

4

Commonly used safety fuse wire is made of

A. Tin

B. Lead

C. Nickel

D. An alloy of tin and lead

What is the correct answer?

4

When the disturbed electrons of an exited atom transfer back into lower energy levels they emit energy in the form of electromagnetic wave pulses called

A. neutrons

B. electrons

C. phonons

D. photons

What is the correct answer?

4

The SI unit of electric current is

A. the ampere

B. the volt

C. the ohm

D. the coulomb

What is the correct answer?

4

Antiparticle of electron is

A. proton

B. antiproton

C. positron

D. neutron

What is the correct answer?

4

The solar wind is composed of

A. outward stream of protons and electrons on the surface of the sun during solar flares and sun-spot activity

B. plasma

C. ionized gas

D. All of these

What is the correct answer?

4

Bats flying in the dark avoid obstacles because

A. they can see very dearly only in darkness

B. they produce ultrasonic waves which guide them

C. their eyes are sensitive to darkness

D. their eye holes expand in darkness