15. Which substance is used in a retrigerator for cooling purposes?
(Radon, Freon, fluorin
16. Which of the following was used as a chemical weapon in the First World
War?
Answers
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Explanation:
Its vaporization property, ammonia is an used as a refrigerant. It was used earlier to the use of chlorofluorocarbons (Freons). Anhydrous ammonia is widely used in industrial refrigeration.
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Answer:
15. freon is used in refridgerator
16. chemical weapon such as
chlorine , phosgene , mustard gas
are used as a chemical weapon in the 1st world war .
Explanation:
15. chlorofluorocarbons , hydrochlorofluorocarbons are the types of the freon . they have low boiling point and low surface tension due to which they are used in refrigerators, air conditioners
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