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).
Industrial name for H2S2O7 is :
Pyrosulphuric acid
Marshall's acid
Oleum
all of the above
A.
Pyrosulphuric acid
H2S2O7 (Pyrosulphuric acid) is industrially known as oleum .
I2 dissolves in KI solution due to the formation of :
KI2 and I-
K+ , I- and I2
KI3-
none of these
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