Question

Q.1 Select from A to G the reactant added, to give the products 1 to 5, in the preparation of hydrogen gas:
A: dilute acid,
B: dilute alkali,
C: cold water,
D:conc. alkali,
E: boiling water,
F: conc. acid,
G: steam
1.) Ca(OH)2 + H2
2). MgO + H2
3) Fe3O4+H2
4). Al2(SO4)3 + H2
5)NaAlO2+H2​

Answer 1

Answer:

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Answer 2

Answer:

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