Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 General Science Chemistry

pH और pOH के बीच संबंध किस रूप में व्यक्त किया जाता है?

1
pH - pOH = 14
2
pH - pOH = 7
3
pH + pOH = 7
4
pH + pOH = 14
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