Consider the following statements:
$I$. Atomic hydrogen is obtained by passing an electric arc through hydrogen gas.
$II$. Hydrogen gas does not reduce heated aluminum oxide.
$III$. Finely divided palladium absorbs a large volume of hydrogen gas.
$IV$. Pure nascent hydrogen is obtained by the reaction of $Na$ with $C_2H_5OH$.
Which of the above statements are correct?
$I$. Atomic hydrogen is obtained by passing an electric arc through hydrogen gas.
$II$. Hydrogen gas does not reduce heated aluminum oxide.
$III$. Finely divided palladium absorbs a large volume of hydrogen gas.
$IV$. Pure nascent hydrogen is obtained by the reaction of $Na$ with $C_2H_5OH$.
Which of the above statements are correct?
- AOnly $I$
- BOnly $II$
- C$I, II$ and $III$
- D$II, III$ and $IV$
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Oxalic acid reacts with concentrated $H_2SO_4$ to produce a mixture of two gases. When this mixture is passed through caustic potash,one of the gases is absorbed. Which substance is formed by the absorption of the gas in caustic potash?
Medium
View SolutionMatch the following columns:
Column-$I$ Column-$II$ $(i)$ Hydrogen peroxide $(a)$ Used as air purifier in submarines $(ii)$ Calcium sulphate hemihydrate $(b)$ Used for water softening $(iii)$ Potassium superoxide $(c)$ Antiseptic $(iv)$ Calgon $(d)$ Plaster of Paris
| Column-$I$ | Column-$II$ |
| $(i)$ Hydrogen peroxide | $(a)$ Used as air purifier in submarines |
| $(ii)$ Calcium sulphate hemihydrate | $(b)$ Used for water softening |
| $(iii)$ Potassium superoxide | $(c)$ Antiseptic |
| $(iv)$ Calgon | $(d)$ Plaster of Paris |
Medium
View SolutionMatch the correct option from Column $-A$ and Column $-B$.
Column $-A$ Column $-B$ $(1).$ Calgon $(a).$ $D_2O$ $(2).$ Perhydrol $(b).$ Zeolite $(3).$ Heavy water $(c).$ Sodium hexametaphosphate $(4).$ Aluminosilicate $(d).$ Commercial name of Hydrogen peroxide
| Column $-A$ | Column $-B$ |
| $(1).$ Calgon | $(a).$ $D_2O$ |
| $(2).$ Perhydrol | $(b).$ Zeolite |
| $(3).$ Heavy water | $(c).$ Sodium hexametaphosphate |
| $(4).$ Aluminosilicate | $(d).$ Commercial name of Hydrogen peroxide |
Medium
View SolutionIn which of the following reactions,hydrogen is liberated?
$(i)$ $Al_{(s)} + HCl_{(aq)} \rightarrow$
$(ii)$ $Al_{(s)} + NaOH_{(aq)} \rightarrow$
$(iii)$ $NaBH_4 + I_2 \rightarrow$
$(i)$ $Al_{(s)} + HCl_{(aq)} \rightarrow$
$(ii)$ $Al_{(s)} + NaOH_{(aq)} \rightarrow$
$(iii)$ $NaBH_4 + I_2 \rightarrow$
Match the terms in Column $-I$ with the relevant item in Column $-II$.
Column $-I$ Column $-II$ $A$. Electrolysis of water produces $1$. atomic reactor $B$. Lithium aluminium hydride is used as $2$. polar molecule $C$. Hydrogen chloride is a $3$. recombines on metal surface to generate high temperature $D$. Heavy water is used in $4$. reducing agent $E$. Atomic hydrogen $5$. hydrogen and oxygen
| Column $-I$ | Column $-II$ |
| $A$. Electrolysis of water produces | $1$. atomic reactor |
| $B$. Lithium aluminium hydride is used as | $2$. polar molecule |
| $C$. Hydrogen chloride is a | $3$. recombines on metal surface to generate high temperature |
| $D$. Heavy water is used in | $4$. reducing agent |
| $E$. Atomic hydrogen | $5$. hydrogen and oxygen |
Difficult
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