Question : Which of the following compounds is used as a drying agent?
Option 1: Calcium oxide
Option 2: Gypsum
Option 3: Calcium chloride
Option 4: Calcium hydroxide
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Correct Answer: Calcium oxide
Solution : The correct answer is Calcium oxide.
Calcium oxide is a drying agent that can dehydrate neutral and basic gases as well as amines, low-boiling alcohols and ethers. It possesses a characteristic known as hygroscopy, which enables it to collect water molecules from the surrounding atmosphere. It is typically used to dry hydrogen and ammonia gas.
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Question : Which among the following is a covalent compound?
Option 1: Hydrogen chloride
Option 2: Magnesium hydroxide
Option 3: Calcium carbonate
Option 4: Sodium chloride
Question : What is the chemical name of Marble?
Option 1: Magnesium oxide
Option 2: Sodium hydroxide
Option 3: Calcium hydroxide
Option 4: Calcium carbonate
Question : Milkiness observed on passing of carbon dioxide through lime water is due to the formation of:
Option 1: calcium hydroxide
Option 2: calcium bicarbonate
Option 3: calcium carbonate
Option 4: calcium chloride
Option 1: Calcium chloride
Option 2: Magnesium fluoride
Option 3: Sodium chloride
Option 4: Carbon tetrachloride
Question : Which of the following can not act as a bleaching agent?
Option 1: Hydrogen peroxide
Option 2: Nitrous oxide
Option 3: Chlorine
Option 4: Sulphur dioxide
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