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प्रश्न
Match the compounds in List I – 1 to 20 with their correct formulas in List II – A to T.
| List I | List II |
| 1. Copper [I] sulphide | A: KMnO4 |
| 2. Potassium permanganate | B: Mg3N2 |
| 3. Phosphoric acid | C: Mg(NO3)2 |
| 4. Copper [I] oxide | D: Al2(SO4)3 |
| 5. Carbonic acid | E: Na2ZnO2 |
| 6. Aluminium sulphide | F: N2O |
| 7. Iron [II] oxide | G: H2CO3 |
| 8. Iron [III] sulphide | H: Al2S3 |
| 9. Iron [II] sulphate | I: NO |
| 10. Sodium zincate | J: FeS |
| 11. Nitrous oxide | K: Fe2S3 |
| 12. Aluminium sulphate | L: H3PO4 |
| 13. Magnesium nitride | M: Cu2S |
| 14. Iron [III] sulphate | N: CuS |
| 15. Copper [II] oxide | O: Fe2O3 |
| 16. Iron [III] oxide | P: FeO |
| 17. Nitric oxide | Q: FeSO4 |
| 18. Copper [II] sulphide | R: Fe2(SO4)3 |
| 19. Iron [II] sulphide | S: CuO |
| 20. Magnesium nitrate | T: Cu2O |
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उत्तर
| List I | List II |
| 1. Copper [I] sulphide | M: Cu2S |
| 2. Potassium permanganate | A: KMnO4 |
| 3. Phosphoric acid | L: H3PO4 |
| 4. Copper [I] oxide | T: Cu2O |
| 5. Carbonic acid | G: H2CO3 |
| 6. Aluminium sulphide | H: Al2S3 |
| 7. Iron [II] oxide | P: FeO |
| 8. Iron [III] sulphide | K: Fe2S3 |
| 9. Iron [II] sulphate | Q: FeSO4 |
| 10. Sodium zincate | E: Na2ZnO2 |
| 11. Nitrous oxide | F: N2O |
| 12. Aluminium sulphate | D: Al2(SO4)3 |
| 13. Magnesium nitride | B: Mg3N2 |
| 14. Iron [III] sulphate | R: Fe2(SO4)3 |
| 15. Copper [II] oxide | S: CuO |
| 16. Iron [III] oxide | O: Fe2O3 |
| 17. Nitric oxide | I: NO |
| 18. Copper [II] sulphide | N: CuS |
| 19. Iron [II] sulphide | J: FeS |
| 20. Magnesium nitrate | C: Mg(NO3)2 |
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संबंधित प्रश्न
Write the molecular formulae of Copper oxide.
Write the molecular formula of the following compounds of Sulphur trioxide.
Find the number and names of elements present in them and calculate their molecular masses.
Write the molecular formula of the following compounds of Iron (II) sulphide and.
Find the number and names of elements present in them and calculate their molecular masses.
Write the molecular formula of the following compounds of Ammonia
Find the number and names of elements present in them and calculate their molecular masses.
The valency of aluminium is 3. Write the valency of other radicals present in the following compound.
Aluminium chloride
Write the molecular formulae of Iron (II) sulphide.
Write the molecular formulae of Hydrogen nitrate (nitric acid).
Write the chemical formula of the following compound in a step-by-step manner –
Calcium bicarbonate
Write the chemical formula of the following compound in a step-by-step manner –
Zinc hydroxide
Match the statements – 1 to 10 below with their correct answers from – A to J.
| Column I | Column II |
| 1. Elements having valency of two. | A: Br1− |
| 2. An anion | B: Divalent |
| 3. A gaseous non-metal | C: Reactants |
| 4. A cation. | D: Ammonium |
| 5. The term used for the substances which take part in the chemical reaction | E: Nitric oxide |
| 6. The meaning of the symbol ‘Δ’ over the arrow in a chemical equation. | F: Nitrogen |
| 7. The chemical name for nitrogen monoxide. | G: Zero |
| 8. A radical containing nitrogen and hydrogen only | H: Nitrous oxide |
| 9. The chemical name for dinitrogen oxide | I: Heat required |
| 10. The valency of noble gases | J: K1+ |
