Match 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 |
- A$i-d, ii-c, iii-a, iv-b$
- B$i-c, ii-d, iii-a, iv-b$
- C$i-c, ii-d, iii-b, iv-a$
- D$i-d, ii-c, iii-b, iv-c$
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$CuSO_4$ solution $+$ lime is called
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When oxalic acid reacts with conc. $H_2SO_4$,two gases produced are of neutral and acidic in nature respectively. Potassium hydroxide absorbs one of the two gases. The product formed during this absorption and the gas which gets absorbed are respectively
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View SolutionCorrelate the items listed in Column $I$ with those listed in Column $II$. Find out as many correlations as you can.
Column $I$ Column $II$ $A$. Synthesis gas $1$. $Na_2[Na_4(PO_3)_6]$ $B$. Dihydrogen $2$. Oxidising agent $C$. Heavy water $3$. Softening of water $D$. Calgon $4$. Reducing agent $E$. Hydrogen peroxide $5$. Stoichiometric compounds of $s-$block elements $F$. Salt like hydrides $6$. Prolonged electrolysis of water $7$. $Zn + NaOH$ $8$. $Zn + dil. H_2SO_4$ $9$. Synthesis of methanol $10$. Mixture of $CO$ and $H_2$
| Column $I$ | Column $II$ |
| $A$. Synthesis gas | $1$. $Na_2[Na_4(PO_3)_6]$ |
| $B$. Dihydrogen | $2$. Oxidising agent |
| $C$. Heavy water | $3$. Softening of water |
| $D$. Calgon | $4$. Reducing agent |
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| $F$. Salt like hydrides | $6$. Prolonged electrolysis of water |
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View SolutionConsider 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?
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