Please select a subject first
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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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Fill in the blank
The ..........................of an atom is very hard and dense.
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Give the following a suitable word/phrase.
The number of protons present in the nucleus of an atom.
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Multiple Choice Questions
The number of electrons in an atom is equal to number of
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Draw the diagrams representing the atomic structures of the following: Nitrogen.
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How does the existence of isotopes contradict Dalton’s atomic theory?
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Give one example each of which illustrates the following characteristics of a chemical reaction:
evolution of a gas
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Complete the table below by identifying A, B, C, D, E and F.
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The protons and neutrons are held firmly in the nucleus by strong .........................
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Amount of energy stored inside the ..................... is known as nuclear energy.
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Nuclear energy can be used to make ..........................
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Tick the most appropriate answer
Which one of the following scientists put forward the theory regarding the extra-nuclear structure of the atom?
- James Chadwick
- John Dalton
- Rutherford
- Niels Bohr
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Tick the most appropriate answer.
Which of the following is used as a coolant in nuclear reactor?
- liquid sodium
- liquid nitrogen
- cadmium steel rods
- plutonium
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What do you observe when dilute sulphuric acid is added to granulated zinc?
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What do you observe when a few pieces of iron are dropped in a blue solution of copper sulphate?
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What do you observe when silver nitrate is added to a solution of sodium chloride?
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What do you observe when ferrous sulphate solution is added to an aqueous solution of sodium hydroxide.
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TRUE \ FALSE
Uranium-235 and uranium-238 both undergo nuclear fission.
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WRITE SHORT ANSWER
What is the central part of an atom known as?
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ANSWER IN DETAIL
What are the various components of a nuclear power plant?
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