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Chemistry
Which one of the following reactions is incorrect?
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Q. Which one of the following reactions is incorrect?
The d-and f-Block Elements
A
$FeCr _{2} O _{4}+ Na _{2} CO _{3}+ O _{2} \to Na _{2} CrO _{4}+ Fe _{2} O _{3}+ CO _{2}$
B
$Na _{2} Cr _{2} O _{7}+ KCl \to K _{2} Cr _{2} O _{7}+ NaCl$
C
$K_{2}Cr_{2}O_{7}+NaCl +H_{2}SO_{4} \to KHSO_{4}+NaHSO_{4}+CrO_{3}+H_{2}O$
D
None of these
Solution:
In reaction $3, CrO _{2} Cl _{2}$ is formed rather than $CrO _{3}$ It is chromyl chloride test.