Question

21.
Assertion (A): Fe2+ salt is boiled with
Conc. HNO, or H,0, prior to
precipitation during gravimetric
analysis.
Reason (R): Fe2+ ions precipitates
partially by NH,OH in presence of
ammonium salt.
(A)
(A) and (R) both are correct.
and R is the correct explanation
of(A).
(B)
(A) and (R) both are correct,
but (R) is not the correct
explanation of (A).
(C)
(A) is true but (R) is false
(D)
(A) and (R) both are false​

Answer 1

Answer:

what is this???????????