Multiple choice

A 136 m.l. mixture with 25% alcohol content is mixed with 64 ml of water. What is the percentage of alcohol in the new solution? एक 136 मिलीलीटर मिश्रण में 25% अल्कोहल है ,जिसमें 64 मिलीलीटर पानी मिलाया जाता है, तो नए विलयन में अल्कोहल कितना प्रतिशत है?

  1. 34%

  2. 45%

  3. 17%

  4. 18%
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Alcohol in original mixture = 25% of 136 ml = 34 ml. Total volume after adding water = 136 + 64 = 200 ml. Percentage of alcohol = (34/200) × 100 = 17%. When water is added to a solution, the amount of solute remains constant while total volume increases, decreasing concentration.

Keep practicing — related questions