|
The solution in which an immersed glass exhibits apparent disappearance is a mixture of |
|||
|
(a) |
hydrogen fluoride and acetic acid |
(b) |
hydrofluoric acid and sulphuric acid |
|
(c) |
Conc.HCl and HNO3 in the ratio of 3:1 |
(d) |
acetone and chloroform in suitable proportion |
|
The solution in which an immersed glass exhibits apparent disappearance is a mixture of |
|||
|
(a) |
hydrogen fluoride and acetic acid |
(b) |
hydrofluoric acid and sulphuric acid |
|
(c) |
Conc.HCl and HNO3 in the ratio of 3:1 |
(d) |
acetone and chloroform in suitable proportion |