Police Constable /Assistant Grade /Secretariat Assistant Important / Expected /Previous Chemistry Question = 10


1. Which sodium compound is used in Fire Extinguishers ?


2. Which inert gas is used to fill in electric bulbs with nitrogen ?




3. The blocks of which metal are used to protect harmful emissions from radioactive minerals ?


4. Color of Ozone molecule is ?


5. What is known as "Baking soda" ?


6. What is known as "Washing soda"?


7. Which element is used for Nuclear reactor tubes ?


8. Which poisonous gas affects the Hemoglobin of blood ?


9. Slaked lime is chemically known as ?


10. Who arranged the elements, in their increasing order of atomic weight ?


11. The metal used in storage batteries is ?


12. In which direction does Rainbow appear in the morning ?


13. The gas dissolved in water that makes it basic is ?


14. In mammals ammonia produced by metabolism is converted into urea in the ?


15. Which gas formed when Potassium Permanganate is heated ?


16. The mixture of Potassium carbonate and Sodium carbonate is known as ?


17. Gypsum is chemically known as ?


18. Which halogen is a liquid at room temperature ?


19. Which reducing agent is used for extraction of highly reactive metal from their ores ?


20. Which element has the maximum number of natural Isotopes ?


21. Detergents are sodium and potassium salts of ?


22. Downs process is used for the extraction of ?


23. The symbol "Fe" indicates ?


24. The symbol "Ag" indicates ?


25. The symbol "Hg" indicates ?


26. The symbol "Au" indicates ?


27. The symbol "K" indicates ?


28. The symbol "Sb" indicates ?


29. The symbol "Pb" indicates ?


30. The pungent smell emitted while scratching the matchbox ?



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