A) On passing \[{{H}_{2}}S\] through acidified \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] solution, a milky colour is observed.
B) \[N{{a}_{2}}C{{r}_{2}}{{O}_{7}}\] is preferred over \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] in volumetric analysis.
C) \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]solution in acidic medium is orange.
D) \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]solution becomes yellow on increasing the pH beyond 7.
Correct Answer: B
Solution :
[b] \[N{{a}_{2}}C{{r}_{2}}{{O}_{7}}\] is hygroscopic.
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