$NaCl$ reacts with conc. $H_2SO_4$ and $K_2Cr_2O_7$ to give reddish fumes $(B)$,which react with $NaOH$ to give yellow solution $(C)$. $(B)$ and $(C)$ respectively are:
- A$CrO_2Cl_2, Na_2CrO_4$
- B$Na_2Cr_2O_4, CrO_2Cl_2$
- C$CrO_2Cl_2, KHSO_4$
- D$CrO_2Cl_2, Na_2Cr_2O_7$
Explore More
Similar Questions
What is the starting material for the preparation of $KMnO_4$?
Easy
View SolutionWhich one of the following sulphides is yellow?
Medium
View SolutionThe solution of $MnO_4^-$ is purple-coloured due to:
Easy
View SolutionWhich one of the following ions exhibits $d-d$ transition and paramagnetism as well?
Match the aqueous solutions given in List-$I$ with their colors given in List-$II$:
List-$I$ (Aqueous solution of salt) List-$II$ (Color) $A$. $FeSO_4 \cdot 7H_2O$ $i$. Green $B$. $NiCl_2 \cdot 4H_2O$ $ii$. Pale pink $C$. $MnCl_2 \cdot 4H_2O$ $iii$. Blue $D$. $CoCl_2 \cdot 6H_2O$ $iv$. Light green $E$. $Cu_2Cl_2$ $v$. Pink $vi$. Colorless
| List-$I$ (Aqueous solution of salt) | List-$II$ (Color) |
| $A$. $FeSO_4 \cdot 7H_2O$ | $i$. Green |
| $B$. $NiCl_2 \cdot 4H_2O$ | $ii$. Pale pink |
| $C$. $MnCl_2 \cdot 4H_2O$ | $iii$. Blue |
| $D$. $CoCl_2 \cdot 6H_2O$ | $iv$. Light green |
| $E$. $Cu_2Cl_2$ | $v$. Pink |
| $vi$. Colorless |
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo