Which two of the following salts are used for preparing iodized salt?
(i) KIO3, (ii) KI, (iii) I2, (iv) HI
(i) and (ii)
(i) and (iii)
(ii) and (iv)
(iii) and (iv).
I2 dissolves in KI solution due to the formation of :
KI2 and I-
K+ , I- and I2
KI3-
none of these
Which of the following is anhydride of perchloric acid ?
Cl2O7
Cl2O5
Cl2O3
HClO
A.
Cl2O7
Chlorine heptachloride (Cl5O7) is the anhydride of perchloric acid .
2HClO4 Cl2O7 + H2O
The number of P - O - P bridges in the structure of phosphorus pentoxide and phosphorus trioxide are respectively
6, 6
5, 5
5, 6
6, 5
Fluorine is the best oxidising agent because it has :
highest electron affinity
highest Eored
highest Eooxid
lowest electron effinity
Bleaching action of SO2 is due to its :
oxidising property
acidic property
basic property
reducing property