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प्रश्न
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+ |
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उत्तर
| Column I | Column II |
| 1. Elements having valency of two. | B: Divalent |
| 2. An anion | A: Br1− |
| 3. A gaseous non-metal | F: Nitrogen |
| 4. A cation. | J: K1+ |
| 5. The term used for the substances which take part in the chemical reaction | C: Reactants |
| 6. The meaning of the symbol ‘Δ’ over the arrow in a chemical equation. | I: Heat required |
| 7. The chemical name for nitrogen monoxide. | E: Nitric oxide |
| 8. A radical containing nitrogen and hydrogen only | D: Ammonium |
| 9. The chemical name for dinitrogen oxide | H: Nitrous oxide |
| 10. The valency of noble gases | G: Zero |
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संबंधित प्रश्न
Write the molecular formulae of Copper oxide.
Write the molecular formula for the oxide and sulphide of following elements of Calcium
Write the molecular formulae of Hydrogen nitrate (nitric acid).
Write the molecular formulae of Hydrogen sulphate (sulphuric acid).
Explain the term ‘symbol’.
Write the chemical formula of the following compound in a step-by-step manner –
Calcium hydroxide
Write the chemical formula of the following compound in a step-by-step manner –
Potassium sulphate
Write the chemical formula of the following compound in a step-by-step manner –
Aluminium hydroxide
Complete the statement given below by filling in the blanks with the correct words.
The valency of iron in FeO is _______ of chlorine [chloride] in CaCl2 is ________ and of dichromate in K2 Cr2 O7 is ________.
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 |
