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  • 20% ethanol by mass means
Multiple choice

20% ethanol by mass means

  1. 20 gm of ethanol is disolved in 80gm of solvent

  2. 20 gm of ethanol is disolved in 80gm of water

  3. 20 gm of ethanol is disolved 100gm of solvent

  4. 1000 ml of solution contains 20 gm of ethanol

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A Correct answer
Explanation

ANS.  1.

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