Strong reducing behaviour of H3PO4 is due to
the presence of one -OH group and two P-H bonds
high electron gain enthalpy of phosphorous
the high oxidation state of phosphorus
the high oxidation state of phosphorus
Oxidation states of P in H4P2O5, H4P2O6, H4P2O7, are respectively
+3, +5, +4
+5, +3, +4
+5, +4,+3
+5, +4,+3
The correct order of increasing bond angles in
Cl2O < ClO2 < ClO2-
ClO2 <Cl2O< ClO2-
Cl2O < ClO2- < ClO2
Cl2O < ClO2- < ClO2
Match (I) substances with List (II) processes employed in the manufacture of the substances and select the correct option.
List I |
List II |
||
A |
Sulphuric acid |
1 |
Haber’s process |
B |
Steel |
2 |
Bessemer’s process |
C |
Sodium |
3 |
Lablanc process |
D |
Ammonia |
4 |
Contact process |
A |
B |
C |
D |
1 |
4 | 2 |
3 |
A |
B |
C |
D |
1 |
2 |
3 |
4 |
A |
B |
C |
D |
4 |
3 | 2 | 1 |
A |
B |
C |
D |
4 |
3 | 2 | 1 |
D.
A |
B |
C |
D |
4 |
3 | 2 | 1 |
Sulphuric acid is manufactured by contact process, steel is manufactured by Bessemer's process, Lablanc process is used for the production of NaOH while NH3 is obtained by Haber's process.
which of the following oxides is not expected to react with sodium hydroxide?
B2O3
CaO
SiO2
SiO2
The stability of +1 oxidation state increases in the sequence
Al < Ga <In < Tl
Tl < In <Ga< Al
In < Tl < Ga < Al
In < Tl < Ga < Al
Which one of the following arrangement does not give the correct picture of the trends indicated against it?
F2 > Cl2 > Br2 > I2 : Oxidising power
F2 > Cl2 > Br2 > I2 : Electron gain enthalpy
F2 > Cl2 > Br2 > I2 : Bond dissociation energy
F2 > Cl2 > Br2 > I2 : Bond dissociation energy
Which one of the following ionic species has the greatest proton affinity to form stable compound?
HS-
NH2-
F-
F-