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Science Quiz 26

author October 8, 2025 No Comments PYQ Quiz

Welcome to your Science Quiz 26

1. 

Total internal reflection can take place when light travels from: [1996]

Diamond to glass

Water to glass

Air to water

Air to glass

Not Attempted

None

2. 

Assertion (A): Transformer is useful for stepping up or stepping down voltages. Reason (R): Transformer is a device used in D.C. circuits. In the context of the above two statements, which one of the following is correct? [1996]

Both A and R are true, and R is the correct explanation of A

Both A and R are true, but R is not the correct explanation of A

A is true, but R is false

A is false, but R is true

Not Attempted

None

3. 

A simple machine helps a person doing: [1996]

Less work.

The same amount of work with lesser force.

The same amount of work.

The same amount of work much faster.

Not Attempted

None

4. 

Consider the following statements: A person in a spaceship located halfway between the Earth and the Sun will notice that the: [1996]

I. Sky is jet black.
II. Stars do not twinkle.
III. Temperature outside the spaceship is much higher than that on the surface of the Earth.

Only III is correct

I and II are correct

I and III are correct

I, II, and III are correct

Not Attempted

None

5. 

‘Diamond Ring’ is a phenomenon observed: [1996]

At the start of a total solar eclipse

At the end of a total solar eclipse

Only along the peripheral regions of the totality trial

Only in the central regions of the totality trial

Not Attempted

None

6. 

The alpha-particle carries two positive charges. Its mass is very nearly equal to that of: [1996]

Two protons

An atom of helium

Sum of masses of two positrons and two neutrons

Two positrons as each positron carries a single positive charge

Not Attempted

None

7. 

The technique used to transmit audio signals in television broadcasts is: [1995]

Amplitude Modulation

Frequency Modulation

Pulse Code Modulation

Time Division Multiplexing

Not Attempted

None

8. 

Which one of the following can be used to confirm whether drinking water contains a gamma emitting isotope or not? [1995]

Microscope

Lead plate

Scintillation counter

Spectrophotometer

Not Attempted

None

9. 

The normal temperature of the human body on the Kelvin scale is: [1995]

280

290

300

310

Not Attempted

None

10. 

Assertion (A): A diamond sparkles more than a glass imitation cut to the same shape. Reason (R): The refractive index of diamond is less than that of glass. [1995]

Choose the correct option.

Both A and R are true, and R is the correct explanation of A

Both A and R are true, but R is not the correct explanation of A

A is true, but R is false

A is false, but R is true

Not Attempted

None

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