Tardigrade
Tardigrade - CET NEET JEE Exam App
Exams
Login
Signup
Tardigrade
Question
Chemistry
Iron is rendered passive by treatment with concentrated
Q. Iron is rendered passive by treatment with concentrated
1924
245
The d-and f-Block Elements
Report Error
A
H
2
S
O
4
B
H
3
P
O
4
C
H
Cl
D
H
N
O
3
Solution:
Because of formation of a thick protective film of
F
e
3
O
4
on its surface iron is rendered passive on action with concentrated
H
N
O
3
.