FOOD AND HUMAN NUTRITION 1 2 AND 3 FORM SIX MOCK EXAMS DAR ES SALAAM 2026 WITH MARKING SCHEME

FOOD AND HUMAN NUTRITION 1 2 AND 3 FORM SIX MOCK EXAMS DAR ES SALAAM 2026 WITH MARKING SCHEME

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FOOD AND HUMAN NUTRITION 1 EXAM

FOOD AND HUMAN NUTRITION 1 MARKING SCHEME

FOOD AND HUMAN NUTRITION 2 EXAM

FOOD AND HUMAN NUTRITION 2 MARKING SCHEME

FOOD AND HUMAN NUTRITION 3 EXAM

FOOD AND HUMAN NUTRITION 3 MARKING SCHEME

Your provided with sample J, water, sodium hydroxide, siever, microscope, microscopic slide, 2 beakers, Mortar and pestle then perfume the following experiment

PROCEDURE

1. Wash substance J twice.

2. Soak substance J in clean water for 10 minutes.

3. Drain the soaked water then grind substance J.

4. Add 10cm3 of distilled water to grinded substance.

5. Filter the mixture by using siever and collect the filtrate in beaker.

6. Leave the filtrate to stand for 10 minutes then remove the decant.

7. Add 3 drops of sodium hydroxide solution mix it well then wash the mixture

8. How does substance obtained in procedure 6 appear under the microscope?

QUESTIONS

1. What is the aim of experiment performed?

2. What was the reasons for washing substance J twice give two points.

3. Why substance J was soaked before grinding.

4. Give the name of the substance obtained in procedure 6.

5. What is your observation in procedure 5 and 6? Give the reason.

6. What are the reasons of using sodium hydroxide in this experiment. (Two points)

7. Give the reasons as to why substance J was washed after addition of sodium hydroxide. Two points)

8. Briefly explain 4 uses of substance obtained in procedure 6in real life situations.