BPSC Teacher (TRE) 3.0 RE-EXAM 2024 | Science | Chemistry | Previous Year Question | Marathon Class 

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N2O nitrous oxide

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BPSC TRE में 6 तो 8 का सिलेबस क्या होता है कोई बताएगा मुझे ?

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The presence of calcium and magnesium bicarbonates C a ( H C O 3 ) 2 and M g ( H C O 3 ) 2 causes temporary hardness in water. The presence of soluble salts of calcium and magnesium, i.e., sulphates and chlorides of calcium and magnesium cause permanent hardness in water.

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