Science & Technology

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Q1.Solar Plates are made of which type of material :

Medium
A Lithium
B Graphite
C Silicon
D None of these
Inventions PPSC 2026

Correct Answer: C

Solar panels (plates) are primarily made of silicon semiconductor material.

Q2.The voltage signal which is generated by microphone is called:

Medium
A Digital
B Analogue
C Hybrid
D None of these
Communication CSS 2026

Correct Answer: B

A microphone converts sound into a continuously varying (analogue) electrical signal.

Q3.Nanocomposite materials are useful in food industry as they prevent packaged food from damage due to:

Medium
A Oxygen
B Carbon dioxide
C Moisture
D All of these
Nanotechnology CSS 2026

Correct Answer: D

Nanocomposite packaging materials create barriers against oxygen, carbon dioxide, and moisture, all of which can damage food.

Q4.The protocol which assigns IP addresses to clients connected to the internet is:

Medium
A Transmission Control Protocol
B Dynamic Host Configuration Protocol
C User Datagram Protocol
D None of these
Modern Technology CSS 2023

Correct Answer: B

Correct Answer: Dynamic Host Configuration Protocol.