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a
Benzenediazonium chloride is prepared by the reaction of aniline with nitrous acid at 273-278 K
b
c
The conversion of primary aromatic amines into diazonium salt is known as diazotisation
d
Diazonium salt is not generally stored, used immediately after its preparation
answer is B.
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Detailed Solution
Benzene diazonium chloride is prepared by the reaction of aniline with nitrous acid at 273-278 K which is known as diazotisation.Due to its instability, the diazonium salt is not generally stored and is used immediately after its preparation.C6H5NH2+NaNO2+2HCI→273-278 KC6H5N2+Cl-+NaCl+2H2OTemperature must vary from 0-5oc.