Kerala PSC - Important and Expected General Science Questions - 21

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1. Chalcopyrite is the most important ____ ore

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

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3. When iron rusts its weight ____

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4. Metal is extracted from Sulphide ores by:

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5. Scheelite is the ore of:

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6. Which metal has the least resistance?

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7. The impurities contained in ore is known as :

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

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9. Which gas is used for welding?

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10. Nitrating mixture contains Sulphuric acid and ____

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11. Pitchblende is the ore of:

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12. The gas used in Cigarette lighters:

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13. The pH value of Blood:

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

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15. The year of Chernobyl disaster?

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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:

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17. Nuclear winter will ____ earth's temperature:

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18. The gas emitted by plants during day time:

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19. The cheapest industrial acid:

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20. The first to extract kerozene from petroleum:

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More General Science Questions

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