Chemistry SSS 1 3rd term 2025 Examination

Welcome to your Chemistry SSS 1 3rd term 2025 Examination

1. The following acids are monobasic except

2. The number of replaceable hydrogen atoms in one molecule of an acid indicates

3. A weak acid is one which?

4. An acid is a substance which in the presence of water produces

5. Range of PH scale is

6. Which of the following household liquids would be effective in treating someone with too acid in the stomach?

7. Which of the following hydroxides will readily dissolve in water?

8. Pure water contaminated with quicklime will have a PH of

9. Salts that contain water of crystallization are said to be

10. Which of the following compounds is not a double salt?

11. Which of the following salts is insoluble in water?

12. The loss of water of crystallization to the atmosphere by some crystalline salts is known as

13. An example of an acid salt?

14. Alums are classified as a

15. Soluble salts can be prepared by the following methods except

16. What is the hardest naturally occurring substance made of carbon?

17. Which of the following is a use of carbon in the form of graphite?

18. Which type of bond is typically formed by carbon?

19. What is the process by which plants convert CO2 to into organic compounds?

20. Which Carbon compound is a major contributor to global warming?

Subjective

1. ........ and 2. ........... are examples of organic acids

3. ........ and 4. ......... are dibasic acids

5. ........ and 6. ......... are allotropes of Carbon

7. ........ is the PH of pure water

8. ........... is the catalyst used in the production of artificial diamond

9. ........ and 10. .......... are products of destructive distillation of coal

Essay Answer Only 4 Questions

1a. What is basicity of an acid? 1b. List and explain 2 types of acids 1c. What is the PH of a solution with a {H+} = 4.2×10-10?

2a. What is Allotropy? 2b. State 3 properties of diamond 2c. Draw the structure of a diamond

3a. Explain Salt 3b. List and explain 2 types of salts 3c. Differentiate between soluble and insoluble salts

4a. What is Water of Crystallization? 4b. Find X in the formula MgSO4.XH2O, if 5.00g of magnesium sulphate was dehydrated and 2.44 remained.

5. Explain the following a. Efflorescence b. Deliquesce c. Hygroscopy d. Anhydrous salt

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