NEET UG CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

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{NaCl}

reacts with conc.

{H}_2 {SO}_4

and

{K}_2 {Cr}_2 {O}_7

to give reddish fumes (B), which react with

{NaOH}

to give yellow solution (C). (B) and (C) respectively are:

View answer and explanation

Correct option: A

{CrO}_2 {Cl}_2, {Na}_2 {CrO}_4

The correct answer is

{CrO}_2 {Cl}_2, {Na}_2 {CrO}_4

because the reddish fumes (B) are chromyl chloride, and it reacts with NaOH to form sodium chromate (yellow solution).

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