WHICH TYPE OF SENSOR IS USED TO MEASURE THE ELECTRICAL CONDUCTIVITY OF WATER IN IOT SYSTEMS

A. Gas sensor गैस सेंसर

B. TDS (Total Dissolved Solids) sensor टीडीएस ( टोटल डिसॉल्व्ड सॉलिड )सेंसर

C. Pressure sensor प्रेशर सेंसर

D. Temperature sensor टेंपेरेचर सेंसर

B. TDS (Total Dissolved Solids) sensor