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Answer on Physical Chemistry Question for Naushin sheikh

Question #31967
There are four substances W, X and Z. The substance W is a dark violet solid having di-atomic value. A solution of W in alcohol is used as a common anticeptic. The substance X is a white solid which is usually recovered from sea water on a large scale. The substance Z is a yet another white solid which is used in making commonly used dry cells. Please tell the 3 substance name.
Expert's answer
The substance W is I2 (Iodine). I2 is a dark violet solid having di-atomic value. A solution of I2 in alcohol is used as a common antiseptic. The substance X is NaCl (Sodium Chloride). NaCl is a white solid which is usually recovered from sea water on a large scale. The substance Z is NH4Cl (Ammonium Chloride). NH4Cl is a white solid which is used in making commonly used dry cells.

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