A) contains cold dilute \[CuC{{l}_{2}}\] and \[HCl\]
B) contains cold dilute alk. \[KMn{{O}_{4}}\] solution
C) can be used for reduction purpose
D) can be used to detect unsaturation in phenol .
Correct Answer: B
Solution :
Baeyers reagent is 1% alkaline solution of\[KMn{{O}_{4}}\]. It is used for detection of presence of double or triple bond in organic compound.
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