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Match List-I with List-II and select the correct answer:
Match List-I with List-II and select the correct answer:
| List-I | List-II |
| a. Stethoscope | 1. To measure intensity of light |
| b. Sphygmomanometer | 2. To check purity of gold |
| c. Caratometer | 3. To hear heart sound |
| d. Lux meter | 4. To measure blood pressure |
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