Which of the following substances is used as a fertilizer?
- A$CaC_2$
- B$NaAlO_2$
- C$Ca(H_2PO_4)_2 \cdot H_2O + CaSO_4 \cdot 2H_2O$
- DAll of the above
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View SolutionMatch the following compounds with their respective uses:
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| Compound | Uses |
|---|---|
| $1. CaCO_3$ | $a.$ In purification of coal gas |
| $2. Ca(OH)_2$ | $b.$ As an antacid |
| $3. CaO$ | $c.$ In paper and textile industries |
| $4. Na_2CO_3 \cdot 10H_2O$ | $d.$ In glass and leather industries |
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$I$. $LiF$ is less soluble in water than $NaF$
$II$. Both $LiCl$ and $MgCl_2$ are insoluble in ethanol
$III$. Both $Li$ and $Mg$ form nitrides
$IV$. $Na_2CO_3$ gives $CO_2$ on heating
The compound which gives off oxygen on moderate heating is
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