1. Tardigrade
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  3. Chemistry
  4. A white powder is insoluble in water, but soluble in conc. H 2 SO 4. On dilution the solid is reprecipitated but dissolves again on adding alkali. The white powder is

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Q. A white powder is insoluble in water, but soluble in conc. $H _{2} SO _{4}$. On dilution the solid is reprecipitated but dissolves again on adding alkali. The white powder is

The p-Block Elements

Solution:

Correct answer is (b) $SnO _{2}$