Which of the following processes cannot remove permanent hardness of water?
Boiling
Calgon’s method
Ion exchange method
Treatment of water with Na2CO3
Which of the following methods leads to the production of the highest purity of dihydrogen?
Electrolysis of barium hydroxide solution
Reaction of steam on hydrocarbons
Electrolysis of brine solution
Process of coal gasification
The electronic configuration of hydrogen is similar to
:
alkaline earth metals
alkali metals
chalcogens
halogens
‘Syngas’ is a mixture of hydrogen with
Oxygen
Nitrogen
Carbon dioxide
Carbon monoxide
Which of the following chemical equations represents the auto-protolysis of water?
C2D2, a deuterium compound, can be prepared by a
Reaction of calcium carbide with deuterium
Reaction of aluminium carbide with deuterium
Reaction of calcium carbide with deuterium oxide
Reaction of aluminium carbide with deuterium oxide
Which of the following compounds acts as a bleaching agent?
MgCO3
NaOH
H2O2
D2O
Which of the following oxides can be reduced by hydrogen?
MgO
ZnO
MnO2
Sb2O3
The ‘Reaction of metals with acids’ is a way of preparing
Hydrogen
Which of the following compounds acts as hydrogen storage hydride?
BeH2
C2H6
PdH
LiH