18. Match the substances in Column I with those in Column II. Column I Column II a) Tartaric acid i) Soap b) Calcium hydroxide ii) Curd c) Formic acid iii) Unripe mangoes d) Sodium Hydroxide iv) Ant’s sting e) Lactic acid v) Lime water
ScienceClass 7CBSEAnswered 27 Mar 2026
Answer
Soln:
| Column I | Column II |
| a) Tartaric acid | iii. Unripe mangoes |
| b) Calcium hydroxide | v. Lime water |
| c) Formic acid | iv. Ant’s sting |
| d) Sodium Hydroxide | i. Soap |
| e) Lactic acid | ii. Curd |
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