Science · Scientific Instruments
वर्षा की अम्लता मापने के लिए किस यंत्र का प्रयोग किया जाता है?
- 1अल्टीमीटर
- 2सीसमोग्राफ
- 3पी. एच. मीटर✓
- 4हाइग्रोमीटर
सही उत्तर देखें
पी. एच. मीटर
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