Everyday Science Hard PPSC Uploaded: 01 Sep 2026

The energy released when a substance burns in the presence of oxygen is called:

Correct Answer: Option B — Combustion energy

Explanation:

Combustion is a chemical reaction between a substance and oxygen that releases heat and light energy, commonly seen in burning fuels.

0 views Back to Everyday Science

Submitted by: PaperMCQs

The hardest natural substance found on Earth is:

The chemical formula for common table salt is:

Sound cannot travel through:

Which of these is not a renewable source of energy?

The process by which plants lose water in the form of vapor is called:

The study of heredity and variation in living organisms is called:

The pH value of pure water at room temperature is:

Which gas is used in the preparation of soft drinks to add fizz?

Which vitamin is produced in human skin upon exposure to sunlight?

The unit used to measure electric current is: