Quiz on chemistry Science

Posted By: Sonali Mahant

Date: January 24, 2025

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

Which of the following is a characteristic of an exothermic reaction?

Absorbs heat

Releases heat

Requires a catalyst

Forms a precipitate

Correct! Wrong!

Which of the following is a noble gas?

Oxygen

Nitrogen

Neon

Chlorine

Correct! Wrong!

What is the chemical symbol for gold?

Correct! Wrong!

Which element has the highest atomic number?

Uranium

Oganesson

Californium

Neptunium

Correct! Wrong!

Which of these is the strongest acid?

Hydrochloric acid (HCl)

Sulfuric acid (H2SO4)

Nitric acid (HNO3)

Acetic acid (CH3COOH)

Correct! Wrong!

What is the chemical formula for methane?

CH3

C2H6

CH4

C3H8

Correct! Wrong!

What is the molar mass of water (H2O)?

18 g/mol

16 g/mol

22 g/mol

24 g/mol

Correct! Wrong!

What is the pH of pure water at 25°C?

4.5

Correct! Wrong!

Quiz on chemistry Science

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April 23, 2025