Which communication technology uses electromagnetic waves through space? MCQ with Answer and Explanation

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Which communication technology uses electromagnetic waves through space?

A. Telegraph

B. Courier service

C. Postal mail

D. Wireless communication

Answer: Option D

Solution (By JKSSB Mock Tests)

Wireless communication uses electromagnetic waves to transmit data without physical cables.

This question belongs to: Geography GK Transport and Communication

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Question #1

Which communication network covers the largest area in India?

A. Postal network

B. Railway network

C. Road network

D. Air network

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Correct Answer: Option A

Explanation:
India Post has the largest postal network in the world.

This question belongs to: Geography GK Transport and Communication

Question #2

Which is the largest inland water transport state in India?

A. Punjab

B. Rajasthan

C. Assam

D. Haryana

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Correct Answer: Option C

Explanation:
Assam has extensive inland waterways, especially along the Brahmaputra River.

This question belongs to: Geography GK Transport and Communication

Question #3

Which port is India's first major port operating under the landlord model?

A. Mumbai Port

B. Paradip Port

C. Kamarajar Port

D. Kochi Port

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Correct Answer: Option C

Explanation:
Kamarajar Port was India's first corporatized port operating on the landlord model.

This question belongs to: Geography GK Transport and Communication

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