Preparation of Dihydrogen

Which one of the following pairs of substances on reaction will not evolve ${\mathrm{H}}_2$ gas?

Assertion: The water gas shift reaction can be used to increase the amount of ${\mathrm{H}}_2$, in the syngas mixture.

Reason: In this reaction, $\mathrm{CO}$ reduces stream to ${\mathrm{H}}_2$.

Reaction of steam on hydrocarbon or coke at high temperature in the presence of catalyst yields a mixture of gases. What are the major components of this mixture?

Explain which commercial process is followed for synthesis of highly pure dihydrogen gas.

Dihydrogen produced from electrolysis of barium hydroxide has a purity greater than _____.

The product(s) of the reaction ${\mathrm{NaBH}}_4+{\mathrm{I}}_2⟶$ 'Products' is/are

_____ gas is liberated by the action of aluminium with concentrated solution of sodium hydroxide. (Name the gas)

In Bosch's process, hydrogen is prepared by mixing steam and $\mathrm{X}$ at $673 \mathrm{K}$ in the presence of $\mathrm{Y}$.

Identify $\mathrm{X}$ and $\mathrm{Y}$.

Which of the following is the metal that does not displace hydrogen from a boiling caustic soda solution?

Which of the following is the correct statement regarding industrial preparation of hydrogen from water gas?

Hydrogen is prepared in the laboratory by treating granular zinc with dilute ${\mathrm{H}}_2{\mathrm{SO}}_4$. Which of the following statements are true?

a. Dilute ${\mathrm{H}}_2{\mathrm{SO}}_4$ does not react with pure zinc.
b. $\mathrm{KOH}$ solution removes the impurities of ${\mathrm{PH}}_3$ and ${\mathrm{AsH}}_3$ from the evolved ${\mathrm{H}}_2$.
c. With pure zinc and dilute ${\mathrm{H}}_2{\mathrm{SO}}_4$, some ${\mathrm{CuSO}}_4$ has to be added.
d. Anhydrous ${\mathrm{CaCl}}_2$ is used to absorb moisture from evolved hydrogen.

The electrolysis of molten sodium hydride liberates hydrogen gas at the anode.

In Bosch's process, hydrogen is prepared by mixing steam and $\mathrm{X}$ at $673 \mathrm{K}$ in the presence of $\mathrm{Y}$.

Identify $\mathrm{X}$ and $\mathrm{Y}$.

Hydrogen is prepared in the laboratory by treating granular zinc with dilute ${\mathrm{H}}_2{\mathrm{SO}}_4$. Which of the following statements are true?

a. Dilute ${\mathrm{H}}_2{\mathrm{SO}}_4$ does not react with pure zinc.
b. $\mathrm{KOH}$ solution removes the impurities of ${\mathrm{PH}}_3$ and ${\mathrm{AsH}}_3$ from the evolved ${\mathrm{H}}_2$.
c. With pure zinc and dilute ${\mathrm{H}}_2{\mathrm{SO}}_4$, some ${\mathrm{CuSO}}_4$ has to be added.
d. Anhydrous ${\mathrm{CaCl}}_2$ is used to absorb moisture from evolved hydrogen.

Which of the following is the metal that does not displace hydrogen from a boiling caustic soda solution?

Which of the following is the correct statement regarding industrial preparation of hydrogen from water gas?

In water-gas shift reaction, hydrogen gas is produced from the reaction of steam with.

The metal that produces ${\mathrm{H}}_2$ with both dil $\mathrm{HCl}$ and $\mathrm{NaOH}\left(\mathrm{aq}\right)$ is

Hydrogen gas produced by heating $\mathrm{NaOH}$ with which metal :-

Hydrogen may be prepared by heating a solution of caustic soda with :