The change in colour is sharper at the PH of ________(a) 5(b) 10(c) 15(d) 20This question was posed to me in a job interview.Asked question is from Estimation of Hardness in section Water of Applied Chemistry

The change in colour is sharper at the PH of ________(a) 5(b) 10(c) 15

1.	The change in colour is sharper at the PH of ________(a) 5(b) 10(c) 15(d) 20This question was posed to me in a job interview.Asked question is from Estimation of Hardness in section Water of Applied Chemistry
Answer» CORRECT ANSWER is (b) 10 To explain I would SAY: The CHANGE in the COLOUR of the ions is sharper at the PH of the 10 than that of the other ranges of the PH.

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The change in colour is sharper at the PH of ________(a) 5(b) 10(c) 15(d) 20This question was posed to me in a job interview.Asked question is from Estimation of Hardness in section Water of Applied Chemistry

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