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quiz on chemistry bar

This is a timed quiz. You will be given 15 seconds per question. Are you ready?

15

0%

What is the atomic number of Carbon?

A) 4

B) 6

C) 8

D) 12

Correct! Wrong!

Which element is most abundant in the Earth's crust?

A) Iron

B) Silicon

C) Oxygen

D) Aluminium

Correct! Wrong!

What is the pH of pure water at 25°C?

A) 5

B) 6

C) 7

D) 8

Correct! Wrong!

What is the chemical formula for sulfuric acid?

A) HNO₃

B) H₂SO₄

C) HCl

D) H₂CO₃

Correct! Wrong!

What type of bond is formed when electrons are shared between atoms?

A) Ionic bond

B) Metallic bond

C) Covalent bond

D) Hydrogen bond

Correct! Wrong!

Which of the following is an alkali metal?

A) Calcium

B) Iron

C) Sodium

D) Aluminium

Correct! Wrong!

Which subatomic particle has a negative charge?

A) Proton

B) Neutron

C) Electron

D) Alpha particle

Correct! Wrong!

Which gas is released during photosynthesis?

A) Carbon dioxide

B) Hydrogen

C) Nitrogen

D) Oxygen

Correct! Wrong!

quiz on chemistry bar

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