What is the main function of Blockchain technology? MCQ with Answer and Explanation

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What is the main function of Blockchain technology?

A. Weather forecasting

B. Secure decentralized ledger

C. High-speed internet

D. Image processing

Answer: Option B

Solution (By JKSSB Mock Tests)

Blockchain provides secure, transparent, and tamper-proof records.

This question belongs to: Static General Knowledge Science and Technology

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India's GSAT satellites are primarily for:

A. Military

B. Earth observation

C. Communication

D. Navigation

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Correct Answer: Option C

Explanation:
GSAT series are geostationary communication satellites.

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Question #2

Bt Cotton is a:

A. Hybrid variety

B. Traditional variety

C. Organic crop

D. Genetically Modified crop

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Correct Answer: Option D

Explanation:
Bt Cotton is a GM crop resistant to bollworm.

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Question #3

Which Indian scientist is known for the development of the smallpox vaccine?

A. Dr. Edward Jenner

B. Dr. Y. Subba Row

C. Dr. Hargobind Khorana

D. None, it was discovered earlier

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Correct Answer: Option D

Explanation:
Edward Jenner developed the smallpox vaccine; Indian contributions are notable in other vaccines.

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