Preparation of Dihydrogen

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

Which of the following will not produce hydrogen gas :-

The catalyst used in Bosch process of manufacture of ${\mathrm{H}}_2$ is :-

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?

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

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.

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 :-

Identify the correct statement in relation with the following reaction :-

$\mathrm{Zn}+2\mathrm{HCl}\to {\mathrm{ZnCl}}_2+{\mathrm{H}}_2$

(i) $\mathrm{ }\mathrm{Sn}+{\mathrm{H}}_2\mathrm{O}\stackrel{△}{\to }$

(ii)  ${\mathrm{C}}_{\left(\mathrm{s}\right)}+{\mathrm{H}}_2{\mathrm{O}}_{\left(\mathrm{g}\right)}\stackrel{473-1273\mathrm{K}}{\to }$

(iii)  $2{\mathrm{NaBH}}_4+{\mathrm{I}}_2⟶$

(vi)  $3{\mathrm{B}}_2{\mathrm{H}}_6+6{\mathrm{NH}}_3\stackrel{△}{\to }$

Number of reactions in which ${\mathrm{H}}_{2\left(\mathrm{g}\right)}$ is one of the product

Dissolving metallic $\mathrm{Zn}$ in excess of $\mathrm{NaOH}$ produces :-

Hydrogen can be prepared by the action of dil. ${\mathrm{H}}_2{\mathrm{SO}}_4$ on :-