What is Blockchain primarily used for? MCQ with Answer and Explanation

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What is Blockchain primarily used for?

A. Weather forecasting

B. Image editing

C. Rocket propulsion

D. Secure transactions

Answer: Option D

Solution (By JKSSB Mock Tests)

Blockchain is a decentralized ledger technology.

This question belongs to: Static General Knowledge Science and Technology

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SSLV is developed for launching:

A. Lunar probes

B. Heavy satellites

C. Small satellites

D. Human missions

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Correct Answer: Option C

Explanation:
Small Satellite Launch Vehicle is for small payloads.

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Question #2

Which of these is a major biotechnology application?

A. Mining coal

B. Producing vaccines

C. Building bridges

D. Manufacturing cars

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Correct Answer: Option B

Explanation:
Biotechnology involves using biological systems to develop products, including life-saving vaccines.

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Question #3

What is the main application of nanotechnology?

A. Weather control

B. Space rockets

C. Large scale construction

D. Materials at nanoscale

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Correct Answer: Option D

Explanation:
Nanotechnology manipulates matter at atomic scale.

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