Hydrogen

Chemistry
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Saline hydrides:

A
are dehydrating agents
B
are formed by transition metals
C
are very poor reducing agents
D
are stable towards water and alcohol
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Which is true statement about ?

A
Hardness can be removed by passing through ion exchange resin
B
Its pressure can be detected by anhydrous
C
It is amphoprotic
D
All of the above
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Very pure hydrogen can be made by which of the following processes?

A
Reaction of methane with steam
B
Mixing natural hydrocarbons of high molecular weight
C
Electrolysis of water
D
Reaction of salt like hydrides with water
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Which of the following statement(s) is/are correct about the water-gas shift reaction which is used in the commercial preparation of hydrogen gas?

A
It involves the selective oxidation of of water gas to with the help of steam in the presence of iron chromate as catalyst
B
It involves the separation of and by solvent extraction method
C
It involves the absorption of in aqueous copper chloride solution
D
It involves the removal of through occlusion with
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