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Recent X-ray work, IR and other spectros...

Recent X-ray work, IR and other spectroscopic methods have proved that Turnbull's blue is identical to Prussian blue.
Q. Intense blue colour arises as a result of:

A

electron transfer between `Fe(II) and Fe(I)`

B

electron transfer between Fe(II) and Fe(III)

C

d-d transition

D

spin magnetic moment

Text Solution

Verified by Experts

The correct Answer is:
B
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Recent X-ray work, IR and other spectroscopic methods have proved that Turnbull's blue is identical to Prussian blue. Q. What is the common formula of Turnbull's blue and Prussian blue?

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Study the following information carefully and answer the given questions. Eight boxes i.e. K, L, M, N, O, P, Q and R kept one above the other. All the boxes are arranged from top to bottom in a stack. Each box contains different colour i.e. Blue, Red, Black, Orange, Yellow, White, Green and Purple. All the information is not necessarily in the same order. Three boxes are kept between box L and box R which is kept above box L. Box O does not contain Yellow colour. Two boxes are kept between the box which contains Red colour and M. The number of boxes is kept above the one which contains Red colour is same as the number of boxes is kept below the one which contains Black colour. The box which contains Black colour is not kept adjacent to box K. Three boxes are kept between those which contain Black colour and Purple colour. Box N is kept one of the boxes above the one which contains Orange colour. Box Q is kept just above the box which contains Purple colour. Not more than two boxes are kept above the box which contains Red colour. More than two boxes are kept between box Q and box K. The box which contains Blue colour is kept just above the one which contains Green colour. Three boxes are kept between the box which contains Blue colour and the box O. Two boxes are kept between the box K and the box which contains White colour. More than two boxes are kept between the box N and the box which contains Yellow colour. How many boxes are kept above the one which contains Orange color?

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Study the following information carefully and answer the given questions. Eight boxes i.e. K, L, M, N, O, P, Q and R kept one above the other. All the boxes are arranged from top to bottom in a stack. Each box contains different colour i.e. Blue, Red, Black, Orange, Yellow, White, Green and Purple. All the information is not necessarily in the same order. Three boxes are kept between box L and box R which is kept above box L. Box O does not contain Yellow colour. Two boxes are kept between the box which contains Red colour and M. The number of boxes is kept above the one which contains Red colour is same as the number of boxes is kept below the one which contains Black colour. The box which contains Black colour is not kept adjacent to box K. Three boxes are kept between those which contain Black colour and Purple colour. Box N is kept one of the boxes above the one which contains Orange colour. Box Q is kept just above the box which contains Purple colour. Not more than two boxes are kept above the box which contains Red colour. More than two boxes are kept between box Q and box K. The box which contains Blue colour is kept just above the one which contains Green colour. Three boxes are kept between the box which contains Blue colour and the box O. Two boxes are kept between the box K and the box which contains White colour. More than two boxes are kept between the box N and the box which contains Yellow colour. Which amongst the following box contains Purple colour?

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