Chemistry General Knowledge Questions and Answers

Chemistry General Knowledge Questions and Answers for all exam preparation.

1. Who discovered Hydrogen?

Answer: Hendry Cavendish

2. Who gave Hydrogen that name?

Answer: Lavosier

3. Which gas was discovered by Daniel Rutherford?

Answer: Nitrogen

4. Who discovered Oxygen?

Answer: Joseph Priestly

5. Fluorine was extracted for the first time by:

Answer: Henri Moissan

6. Which is the oldest anaesthetic in the world:

Answer: Aspirin

7. The chemical that imparts yellow color to glass:

Answer: Cadmium sulphide

8. Lead Chromate imparts …………….. color to rubber products:

Answer: Yellow

9. The chemical used in photographic films:

Answer: Silver Bromide

10. The poisonous gas formed when plastic is burned:

Answer: Dioxine

11. Which metal is used to make the covering of nuclear reactors?

Answer: Lead

12. Which is added to petrol to reduce knocking:

Answer: Tetra Ethyl Lead

13. The first organic compound prepared in laboratory:

Answer: Urea

14. Which is known as ‘Artificial Silk’?

Answer: Rayon

15. Which one of the following is an isotope of Hydrogen?

Answer: All of these

16. The formula of Hard Water:

Answer: D2O

17. Chemical used by USA in Vietnam War:

Answer: Agent orange

18. Heaviest gas:

Answer: Uranium Hexaflouride

19. The chemical that turns silver ornaments into black:

Answer: Hydrogen sulphide

20. The Nitrogen compound used as both fertilizer and explosive:

Answer: Ammonium Nitrate

21. The bubbles in Champagne are:

Answer: Carbon dioxide

22. When you chop onions, your eyes can burn because a chemical reaction produces:

Answer: Sulphuric acid

23. Humans excrete most nitrogen based wastes in urine using which molecule?

Answer: Urea

24. What pigment is most directly responsible for the brown color of faces?

Answer: Bilirubin

25. The chemical known as thimerosol has been used to preserve saline solutions and vaccines. Thimerosol contains which metal?

Answer: Mercury