CHEMISTRY GK QUESTIONS FOR EXAMS SSC , PCS , RRB.

Table of Contents

CHEMISTRY GK QUESTIONS :

Chemistry GK

1. What is the Chemical formula of washing soda:

Ans. Chemical Name = Sodium Carbonate.

Chemical formula = Na2CO3.10H2O

2. What is the Chemical Name of Baking soda:

Ans. Chemical Name = Sodium Bicarbonate.

Chemical formula = NaHCO3

3. The chemical that is used to ripen Mangoes:

Ans. Calcium Carbide.

4. Inert gases are:

Ans. Chemically Unreactive.

5. The most abundant element in the Earth’s Atmosphere :

Ans. Nitrogen.

6. High percentage of Carbon is found in which form of Coal ?

Ans. Anthracite.

7. Name the gas used in Prepration of Bleaching Powder :

Ans. Chlorine.

8. What is the another Name of Vineger ?

Ans. Acetic acid.

9. The depletion in Ozone Layer is Caused by:

Ans. Chlorofluorocarbons.

10. What is the Name of the Acid present in Grapes ?

Ans. Tartaric Acid.

11. Which Gas is also Known as Laughing gas ?

Ans. Di-nitrogen Oxide.  (N2O)

12. The chemical substance present in bones and teeth is:

Ans. Calcium Phosphate.

13. The Chief Source of Napthalene is ?

Ans. Coal-tar.

14. The element used for making solar cells :

Ans. Silicon.

15. The most important ore of Lead is :

Ans. Galena.

16. Copper is refined by:

Ans. Roasting.

17. Natural Rubber is polymer of:

Ans. Isoprene.

18. Brass contains:

Ans. Copper and Zinc.

19. Dry ice is the solid form of:

Ans. Carbon Dioxide.

20. Which is the purest form of Iron:

Ans. Wrought Iron.

21. The apparatus used to test acidity of aqueous solution is:

Ans. pH meter.

22. Which is the essential Element in all organic compounds ?

Ans. Carbon.

23. Instrument Used for measuring Wind velocity ?

Ans. Anemometer.

24. The main Chemical Constituent of clay is:

Ans. Aluminium Silicate.

25. The Main active Constituent of Tea and Coffee is:

Ans. Caffeine.

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