Which planet is famous for its rings? MCQ with Answer and Explanation

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Which planet is famous for its rings?

A. Saturn

B. Mars

C. Earth

D. Mercury

Answer: Option A

Solution (By JKSSB Mock Tests)

Saturn is widely known for its visible ring system.

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Question #1

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What is a 'quantum computer' capable of doing much faster than a classical computer?

A. Sending emails

B. Storing large amounts of video data

C. Displaying high-resolution images

D. Solving complex mathematical problems

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Correct Answer: Option D

Explanation:
Quantum computers use qubits to perform specific complex calculations, like cryptography or molecular modeling, at exponential speeds.

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Question #2

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What is the speed of sound in air at room temperature approximately?

A. 450 m/s

B. 330 m/s

C. 300,000,000 m/s

D. 1500 m/s

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Correct Answer: Option B

Explanation:
The speed of sound in air is approximately 330-343 meters per second at 20°C.

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Question #3

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The discovery of X-rays was made by:

A. Wilhelm Roentgen

B. Marie Curie

C. Enrico Fermi

D. James Chadwick

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Correct Answer: Option A

Explanation:
Roentgen discovered X-rays in 1895.

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