NEET Exam Model Paper 2

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Question : 151 of 180

Marks: +1, -0

Which of the statements is not true?

K2Cr2O7 solution in acidic medium is orange
K2Cr2O7 solution becomes yellow on increasing the pH beyond 7
Acidifide K2Cr2O7 reacts with H2S to form milk coloured sulphur
Na2Cr2O7 is preferred over K2Cr2O7 in volumetric analysis

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