Correct option is B
Ans.(b)
(a)

x + 3 (–2) = –1
x = +5
(b)

2(+1) + 2x + 7(–2) = 0
X = +6
(c)

(+1) + x + 4(–1) = 0
x = +3
(d)

2(+1) + x = 0
x = –2
Ans.(b)
(a)

x + 3 (–2) = –1
x = +5
(b)

2(+1) + 2x + 7(–2) = 0
X = +6
(c)

(+1) + x + 4(–1) = 0
x = +3
(d)

2(+1) + x = 0
x = –2
is oxidised the quantity of electricity required to completely oxidise
to
is :-
Suggested Test Series
Suggested Test Series