When FeCl3 reacts with K3[Fe(CN)6] no blue colour is observed. K3[Fe(CN)6] is used as indicator in estimation of Fe2+ by Cr2O72– ion in acidic medium. End point will be when:
2 points
(A) solution of iron salt does not give blue colour with indicator
(B) solution of iron salt gives blue colour with indicator
(C) no colour before and after with indicator
(D) always blue colour before and after
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Answer:सरल रेखा मे गतिमान दो कणो a व b के वेग समय ग्राफ साथ
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