Which communication technology is used in contactless smart cards? MCQ with Answer and Explanation

Which communication technology is used in contactless smart cards?
A. Telegraph
B. NFC
C. DTH
D. VSAT
Answer: Option B
Solution (By JKExamLibrary)
Near Field Communication (NFC) is used in contactless payment cards and smart cards.

This question belongs to: Geography GK Transport and Communication

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Which system is used for emergency communication?
A. Telephone
B. Internet
C. Postal mail
D. Telegraph

Correct Answer: Option A


Explanation:
Telephones are widely used for emergency and real-time communication.

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Question #2 Report Error
Which city is known as the headquarters of South Central Railway?
A. Bhopal
B. Hyderabad
C. Nagpur
D. Pune

Correct Answer: Option B


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South Central Railway is headquartered at Secunderabad in Hyderabad.

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Question #3 Report Error
Which port is famous for handling coffee exports from India?
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C. Chennai Port
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Correct Answer: Option A


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Mangalore Port handles export of coffee, spices, and petroleum products.

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