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
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