Which metal is the best conductor of electricity? MCQ with Answer and Explanation

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Which metal is the best conductor of electricity?

A. Gold

B. Aluminum

C. Silver

D. Copper

Answer: Option C

Solution (By JKExamLibrary)

Silver is the most electrically conductive element, although copper is often used due to cost.

This question belongs to: Static General Knowledge Science and Technology

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What is the purpose of a firewall in network security?

A. To block unauthorized access to a network

B. To speed up internet connection

C. To enhance graphic display

D. To store backup files

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Correct Answer: Option A

Explanation:
A firewall monitors and controls incoming and outgoing network traffic based on security rules.

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Question #2

What is a 'Graphic User Interface' (GUI)?

A. A way to increase Wi-Fi speed

B. A hardware cable

C. A way to use a computer with images and icons

D. A coding language

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Correct Answer: Option C

Explanation:
A GUI allows users to interact with electronic devices through visual icons and menus.

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Question #3

What is the hardest part of the human body?

A. Bone

B. Nails

C. Tooth enamel

D. Skull

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Correct Answer: Option C

Explanation:
Tooth enamel is the most mineralized and hardest substance in the human body.

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