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Match List-I (Type of glass) with List-II (Composition) and select the correct answer:
Match List-I (Type of glass) with List-II (Composition) and select the correct answer:
| List-I | List-II |
| a. Soda glass | 1. Mixture of potassium and lead silicates |
| b. Crown glass | 2. Mixture of sodium, barium, zinc and magnesium silicates |
| c. Flint glass | 3. Mixture of sodium, zinc and aluminium silicates |
| d. Pyrex glass | 4. Mixture of sodium and calcium silicates |
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