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Current Affairs January 2024

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4

Match the following:
A. Manometer1. Depth of sea
B. Audiometer2. High temperatures
C. Pyrometer3. Level of human hearing
D. Fathometer4. Pressure of a gas

A. A-1 B-4 C-3 D-2

B. A-4 B-3 C-1 D-2

C. A-4 B-3 C-2 D-1

D. A-3 B-4 C-1 D-2

Correct Answer :

C. A-4 B-3 C-2 D-1


Related Questions

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4

If the speed of the rotation of the earth increases the weight of a body

A. will increase

B. will decrease

C. will have no change

D. will either increase or decrease

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4

The mirage is a phenomenon

A. generally considered as a desert happening

B. caused by unequal heating of the several layers of the atmosphere above the desert

C. in which the refracted rays take a curved path resulting in total internal refection

D. All the above

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4

Which of the following apparatus is used in the electrolysis of water?

A. Voltmeter

B. Voltameter

C. Ammeter

D. Potentiometer

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4

Nuclear fission process means

A. absorption of a neutron by a nucleus

B. breakup of the nucleus of a heavy atom into two nearly equal halves emitting two or three neutrons and releasing large amounts of nuclear energy in the process

C. the scattering of neutrons

D. formation of heavier nucleus

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4

Drinks kept in a vacuum flask remain hot or cold as the case may be for a long time because

A. both walls are silvered on the vacuum side

B. there is vacuum between the double walls

C. the cork is a poor conductor of heat

D. of all the above

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4

Alternating Current (AC) is more advantageous than direct current because

A. it can be transmitted easily and efficiently

B. Alternating Current (AC) loses the least amount of energy when transmitted at high voltages

C. Alternating Current (AC) voltage can be easily increased or decreased

D. all the above

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4

In which of the following will a piece of iron weigh most?

A. in air

B. in an atmosphere of oxygen

C. in an atmosphere of CO2

D. in vacuum

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4

If the speed of the rotation of the earth increases the weight of a body

A. will increase

B. will decrease

C. will have no change

D. will either increase or decrease

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4

It is easier to climb down a staircase than climb up because in climbing down

A. work is done against gravity

B. the steepness of the staircase isn't felt

C. gravity assists

D. there is no friction between the legs and steps

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4

A ship sailing from a river to the sea

A. sinks less in the sea

B. sinks more in the sea

C. neither sinks more nor less in the sea

D. sinking more or less depends on sea

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4

In a river, the currents are fastest where the river la

A. wide and shallow

B. narrow and shallow

C. wide and deep

D. narrow and deep

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4

Which of the following apparatus is used in the electrolysis of water?

A. Voltmeter

B. Voltameter

C. Ammeter

D. Potentiometer

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4

The unit of heat energy is

A. watt

B. degree

C. joule

D. erg

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4

A permanent magnet may be demagnetised by

A. placing it inside a solenoid through which an alternating current is flowing

B. heating the magnet to redness and then allowing it to cool

C. dropping it several times or hammering it while lying east-west

D. All the above

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4

In very cold countries alcohol is used as a thermometric liquid because

A. alcohol is a poor conductor of heat

B. alcohol can be coloured for its level to be seen easily

C. its freezing point is very low

D. it will not stick to the glass tube

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4

A permanent magnet may be demagnetised by

A. placing it inside a solenoid through which an alternating current is flowing

B. heating the magnet to redness and then allowing it to cool

C. dropping it several times or hammering it while lying east-west

D. All the above

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4

A ruse wire is characterised by

A. high resistance and high melting point

B. high resistance and low melting point

C. low resistance and high melting point

D. low resistance and low melting point

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4

Acoustics is a property or

A. Physics

B. Chemistry

C. Biology

D. Economic

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4

To concentrate light on the defective teeth, the dentists use

A. convex mirrors

B. concave mirrors

C. convex lens

D. concave lens

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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

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4

The speed at which light travels in vacuum is

A. 3 x 107 ms-1

B. 5 x 108 ms-1

C. 3 x 104 kms-1

D. 3 x 108 ms-1

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4

The frequency of an ultrasonic wave is

A. the same as that of an audible sound

B. above the audible range

C. below the audible range

D. None of the above

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4

The property of a fluid by which it resists relative motion within itself is known as

A. cohesive force

B. surface tension

C. diffusion

D. viscosity

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4

When we tighten the string of a sitar or tanpura its pitch

A. remains the same

B. increases

C. decreases

D. None of the above

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4

When ice just melts

A. there is no change in volume

B. there is no change in temperature

C. heat is given out

D. there is no change of state

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4

Warm air will hold more water vapour than cold air because

A. it is lighter

B. it has more water vapour in it

C. its molecules are close together

D. its molecules are far apart

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4

A thermostat is a device used

A. for automatically maintaining a steady temperature

B. for measuring electricity

C. to reduce the voltage of electricity

D. for producing heat

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4

The focal length or lens or the eye is under the control or the

A. iris

B. pupil

C. ciliary body

D. cornea

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4

The audible range of a normal human ear is frequencies ranging from

A. 10000 to 20000 Hz

B. 50 to 15000 Hz

C. 20 to 20000 Hz

D. 15 to 50000 Hz

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4

The first Indian Satellite launched from a Russian Cosmodrome on April 16, 1975 was named

A. Bhaskara

B. Insat I-A

C. Aryabhatta

D. SLV-l