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Science Quiz 4

author September 10, 2025 No Comments PYQ Quiz

Welcome to your Science Quiz 4

Consider the following: [2010]

Bluetooth device
Cordless phone
Microwave oven
Wi – Fi device

Which of the above can operate between 2.4 and 2.5 GHz range of radio frequency band?

1 and 2 only

3 and 4 only

1, 2 and 4 only

1, 2, 3 and 4

Not Attempted

None

WIMaX is related to which one of the following? [2009]

Biotechnology

Space technology

Missile technology

Communication technology

Not Attempted

None

Who among the following is considered as the inventor of the World Wide Web (WWW)? [2007]

Edward Kasner

Bill Gates

Tim Berners-Lee

Vinod Dham

Not Attempted

None

What does the term Dolby B, or Dolby C, printed on tape recorders and other sound systems refer to? [2006]

Frequency modulated system

Amplitude modulated system

Noise reduction circuit

Both DC and AC power can be used

Not Attempted

None

Consider the following statements: [2004]

Smart Card is a plastic card with an embedded microchip.
Digital technology is primarily used with new physical communication medium such as satellite and fibre optics transmission.
A digital library is a collection of documents in an organised electronic form available on the Internet only.

Which of the statements given above is/are correct?

3 only

1 and 2

2 and 3

1, 2 and 3

Not Attempted

None

The memory of a computer is commonly expressed in terms of Kilobytes or Megabytes. A byte is made up of: [2000]

Eight binary digits

Eight decimal digits

Two binary digits

Two decimal digits

Not Attempted

None

The world’s fastest computer has been able to perform (as of Dec. 1996): [1997]

10⁶ operations per second

10⁹ operations per second

10¹² operations per second

10¹⁵ operations per second

Not Attempted

None

With reference to radioisotope thermoelectric generators (RTGs), consider the following statements:

RTGs are miniature fission reactors.
RTGs are used for powering the onboard systems of spacecrafts.
RTGs can use Plutonium-238, which is a by-product of weapons developments.

Which of the statements given above are correct? [2024]

1 and 2 only

2 and 3 only

1 and 3 only

1, 2 and 3

Not Attempted

None

Consider the following statements:

Statement-I: Giant stars live much longer than dwarf stars.

Statement-II: Compared to dwarf stars, giant stars have a greater rate of nuclear reactions.

Which one of the following is correct in respect of the above statements? [2024]

Both Statement-I and Statement-II are correct and Statement-II explains Statement-I

Both Statement-I and Statement-II are correct, but Statement-II does not explain Statement-I

Statement-I is correct, but Statement II is incorrect

Statement-I is incorrect, but Statement-II is correct

Not Attempted

None

10.

Consider the following aircraft:

Rafael
MiG-29
Tejas MK-1

How many of the above are considered fifth-generation fighter aircraft? [2024]

Only one

Only two

Only three

None

Not Attempted

None

Name

Time’s up

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