1. CHEMISTRY DEPARTMENT WAID ACADEMY Food and diet

2. The four main elements in the human body are 25 1.carbon, sulphur, nitrogen and hydrogen. 2.carbon, sulphur, oxygen and hydrogen. 3.carbon, nitrogen, oxygen and hydrogen. 4.sulphur, nitrogen, oxygen and hydrogen

3. The essential elements are present in the diet and in the body as 25 1.elements in the diet and compounds in the body. 2.compounds in the diet and elements in the body 3.elements in the diet and elements in the body 4.compounds in the diet and compounds in the body.

4. The three essential compounds present in a balanced diet are 25 1.Fats, proteins and hydrocarbons. 2.Proteins, carbohydrates and hydrocarbons. 3.Fats, proteins and carbohydrates. 4.Fats, carbohydrates and hydrocarbons.

5. More than 60% of body weight is made up of 25 1.protein. 2.water. 3.fat. 4.fibre.

6. Small amounts of iron are needed in a balanced diet. The iron is used in the body to 25 1.make blood. 2.make teeth and bones. 3.make muscle. 4.protect the body against scurvy.

7. What is the most concentrated source of energy in our diet? 25 1.Carbohydrates. 2.Proteins. 3.Fibre. 4.Fats and oils.

8. Which part of our diet is needed for body growth and repair. 25 1.Carbohydrates 2.Proteins 3.Fibre 4.Fats and oils

9. Which type of substance present in a balanced diet can be detected by a filter paper test? 25 1.Carbohydrates. 2.Proteins. 3.Fibre. 4.Fats and oils.

10. Which type of substance is broken down during digestion into amino acids? 25 1.Carbohydrates. 2.Proteins. 3.Fibre. 4.Fats and oils.

11. Which type of substance in the diet keeps the gut working and prevents constipation? 25 1.Carbohydrates. 2.Proteins. 3.Fibre. 4.Fats and oils.