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Kerala PSC - Important and Expected General Science Questions - 21

Kerala PSC - Important and Expected General Science Questions - 21

1. Chalcopyrite is the most important ____ ore


2. Which of the following metal is found in free form in nature?
Silver, Gold, Copper, Tin


3. When iron rusts its weight ____


4. Metal is extracted from Sulphide ores by:


5. Scheelite is the ore of:


6. Which metal has the least resistance?


7. The impurities contained in ore is known as :


8. The most abundant gas in the atmosphere of Mars:


9. Which gas is used for welding?


10. Nitrating mixture contains Sulphuric acid and ____


11. Pitchblende is the ore of:


12. The gas used in Cigarette lighters:


13. The pH value of Blood:


14. The acid that cannot be kept in glass bottles:


15. The year of Chernobyl disaster?


16. The chemical procedure for determining the amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down organic material present in a given water sample at certain temperature over a specific time period is termed:


17. Nuclear winter will ____ earth's temperature:


18. The gas emitted by plants during day time:


19. The cheapest industrial acid:


20. The first to extract kerozene from petroleum:


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Kerala PSC - Important and Expected General Science Questions - 21 Kerala PSC - Important and Expected General Science Questions - 21 Reviewed by Santhosh Nair on 12:02 PM Rating: 5
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