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प्रश्न
Use the information given in (a) to (h) to identify the substances P to W selecting your answers from the given list.
List:
| Calcium | Oxygen | Copper (II) Oxide |
| Carbon | Calcium hydroxide | Copper (II) Nitrate |
| Lead (II) Oxide | Hydrogen chloride | Chlorine |
| Lead (II) Nitrate | Calcium Oxide | Ammonium chloride |
- P is white solid. When heated produces white fumes (sublime).
- P and R on warming produce an alkaline gas.
- On adding water to T, heat is evolved and R is formed.
- Q burns brightly in the air to form T.
- When S is heated, it gives off brown fumes and leaves a black residue of U.
- A solution of S is formed by warming U with dilute nitric acid.
- V is a gaseous non-metallic element that reacts with hydrogen to form W.
- A solution of W will neutralize the solution of R.
उत्तर
- P is NH4Cl Ammonium Chloride.
- P is NH4Cl Ammonium Chloride and R is Ca(OH)2 Calcium Hydroxide.
- T is CaO and R is Ca(OH)2
- Q is Ca (Calcium) and T is CaO
- S is Copper (II) Nitrate and U is CuO (Copper oxide)
- S is Cu[NO3] and U is CuO
- V is Chlorine (Cl2) and W is HCl (Hydrogen Chloride)
- W is HCl and R is Calcium hydroxide
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