Absolute alcohol is obtained when the rectified spirit is treated with:
Correct answer: D. CaO
- A. Ca(OH)2
- B. CaCO3
- C. CaCl2
- D. CaO
Explanation
Absolute alcohol is obtained when the rectified spirit is treated with anhydrous calcium oxide (CaO) to remove the remaining water content. Absolute alcohol, also known as anhydrous alcohol, is obtained by treating rectified spirit with anhydrous calcium oxide (CaO) to remove the remaining water content. The CaO acts as a desiccant, absorbing the water from the rectified spirit, resulting in the production of absolute alcohol, which contains no water.
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About Alcohols and Phenols
Alcohols are classified as primary, secondary or tertiary and studied through their hydrogen bonding, acidity, oxidation and reactions with active metals, acids and halogenating agents. Phenols require separate treatment because the hydroxyl group is attached to an aromatic ring, making their acidity and electrophilic substitution different from ordinary alcohols.
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