Question

Select from a to e the reactant added to give the products 1 to 3, in the preparation of

hydrogen gas.


a. Dil. Acid

b. Dil. Alkali c. Conc. Alkali

d. Steam

e. Boiled water

1. ZnCl2 + H2

2. MgO + H2

3. Fe3O4 + H2

4. NaAlO2 + H2​

Answer 1

Answer:

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