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Match List-I with List-II List-I A. Chlorophyll B. Soda ash C. Dentistry, Ornamental work D. Used in white washing List-II I. Na2CO3 II. CaSO4 III. Mg2+ IV. Ca(OH)2 Choose the correct answer from the options given below (1) A-II, B-I, C-III, D-IV (2) A-III, B-IV, C-I, D-II (3) A-II, B-III, C-IV, D-I (4) A-III, B-I, C-II, D-IV

1. A-II, B-I, C-III, D-IV
2. A-III, B-IV, C-I, D-II
3. A-II, B-III, C-IV, D-I
4. A-III, B-I, C-II, D-IV

Correct answer: A-III, B-I, C-II, D-IV

Solution

Chlorophyll contains magnesium (Mg2+), which is essential for its function in photosynthesis. Soda ash is sodium carbonate (Na2CO3), commonly used in glass making and as a cleaning agent. Dentistry and ornamental work often utilize calcium sulfate (CaSO4) for molds and casts, while calcium hydroxide (Ca(OH)2) is used in whitewashing due to its alkaline properties.

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