CBSE
Multiple Choice QuestionsThe compound molecular in nature in gas phase but ionic in solid state is
PCl5
PCl3
POCl3
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
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
Which of the following sulphides is yellow in colour ?
CuS
CdS
ZnS
CoS
Which of the following oxide does not form acidic aqueous solution ?
N2O3
NO2
N2O5
NO
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
