What is a 'Database' used for? MCQ with Answer and Explanation

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What is a 'Database' used for?

A. Writing text documents

B. Rendering computer graphics

C. Managing and storing data systematically

D. Connecting to Wi-Fi

Answer: Option C

Solution (By JKSSB Mock Tests)

A database is an organized collection of structured information or data.

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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. Solving complex mathematical problems

B. Storing large amounts of video data

C. Displaying high-resolution images

D. Sending emails

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Correct Answer: Option A

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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Which mission marked India's entry into the elite club of nations with anti-satellite capability?

A. Agni-V

B. Prithvi

C. BrahMos

D. Mission Shakti

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Correct Answer: Option D

Explanation:
Mission Shakti in 2019 demonstrated India's ASAT missile capability.

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Question #3

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Which gas makes the sky look blue?

A. Argon

B. Nitrogen

C. Carbon Dioxide

D. Oxygen

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Correct Answer: Option B

Explanation:
Rayleigh scattering, where sunlight interacts with molecules (primarily nitrogen), causes the sky to appear blue.

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