Home
Class 12
CHEMISTRY
When KOH solution is added to pottasium ...

When KOH solution is added to pottasium dichromate solution the colur of solution changes to yellow, because:

A

Chromate iron changes to dichromate iron.

B

dichroamte ion changes to chromate ion.

C

oxidation number of chromium changes from `+6` to `+4`

D

oxidation number of chromium changes from `+4` to `+6`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • MCQs FROM PREVIOUS BOARD QUESTION PAPERS

    NIKITA PUBLICATION|Exercise "MARCH" 2014|14 Videos

  • MCQs FROM PREVIOUS BOARD QUESTION PAPERS

    NIKITA PUBLICATION|Exercise "OCTOBER" 2014|13 Videos

  • MCQs FROM PREVIOUS BOARD QUESTION PAPERS

    NIKITA PUBLICATION|Exercise Question Paper- MHT-CET 2018|50 Videos

  • HALOALKANES AND HALOARENES

    NIKITA PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|386 Videos

  • Multiconversion Questions

    NIKITA PUBLICATION|Exercise MCQs|58 Videos

Similar Questions

Explore conceptually related problems

When sulphur dioxide gas is passed throught acidified potassium dichromate solution, the colour of the solution changes from:

When SO_(2) gas is allowed to react with acidified potassium dichromate solution , the yellow colour of the solution changes to green. This is due to the formation of

When silver nitrate solution is added to potassium iodide solution then the sol produced is

A solution of a colourless salt when acidified with dil. HCl , slowly turns milky with a pale yellow tint. When AgNO_(3) solution is added to the solution of the salt, white ppt. slowly changing to yellow, orange, brown and finaly to black is obtained. the anion present in the salt is

When Al is added to NaOH solution

When KMnO_(4) solution is added to hot oxalic acid solution the decoloursitation is slow in the beginning but becomes instantaneous after some time. This is because