Question : Which among the following chemicals is used to purify water as a disinfectant?
Option 1: Chlorine
Option 2: Ethanol
Option 3: Phosphor
Option 4: Teflon
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Correct Answer: Chlorine
Solution : The correct answer is Chlorine.
Chlorine is used to purify water as a disinfectant. Chlorine is a yellow-green kind of gas at room temperature and is represented by the symbol ”Cl”. Chlorine has greater density than air. It is a highly effective method of disinfection used to purify water.
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Question : Which of the following is used as an antacid to neutralise stomach acidity?
Option 1: Iodoform
Option 2: Morphine
Option 3: Chlorine
Option 4: Magnesium hydroxide
Question : Which among the following elements is used in moisturising creams and soaps because of its hygroscopic properties?
Option 1: Galena
Option 3: Freon
Option 4: Glycerol
Question : Which among the following elements does not belong to the Halogens group?
Option 1: Astatine
Option 2: Helium
Option 3: Bromine
Option 4: Chlorine
Question : Which among the following can be termed as a "dynamic living entity"?
Option 1: Tree
Option 2: Water
Option 3: Forest
Option 4: Air
Question : Which among the following is used to dilute oxygen in the gas cylinders used by divers?
Option 1: Krypton
Option 2: Argon
Option 3: Helium
Option 4: Neon
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