Topic outline

    • Components of Food

      Q11. Why do we need carbohydrates in our diet?

      Ans. We need carbohydrates in our diet as it provides energy to the body.


      Q12. Why do children need more protein in their diet?

      Ans. Proteins are needed for the growth and repair of our body. So, children need more protein to support their growth and development of the body.


      Q13. Dia prepared lady fingers that taste yummy. She washed the lady finger after she cut them in small pieces and then fried them in excess oil with lots of spices to make it crunchy and tasty. Was her method of cooking correct?

      Ans. No, her method of cooking would result in loss of nutrients. She should have washed the lady fingers before cutting and should have cooked in less oil.


      Q14. What is night blindness? Write its symptoms.

      Ans. Night blindness causes difficulty in vision. The person suffering from night blindness cannot see clearly in dim lights.


      Q15. A child has stunted growth, swelling on face, discoloration of hair and skin disease. He was advised to eat protein rich diet. Name the disease child is suffering from?  

      Ans. Kwashiorkor

      Q16. How can we test presence of fat in food item?

      Ans. Rub a small quantity of food item on a piece of white paper. Oily patch on the piece of white paper indicates that the food items contain fat.


      Q17. How diseases are caused?

      Ans. Main causes of diseases are:-

      i.             germs

      ii.            lack of specific nutrients in the diet

      iii.          contact with the sick person


      Q18. Write the steps to test the presence of protein in a food item.

      Ans. Steps are:

      i.             Make a paste or powder of the food item to be tested.

      ii.            Put some of these in test tube and add 10 drops of water to it. Shake the test tube.

      iii.          Add 2 drops of solution of copper sulphate and 10 drops of solution of caustic soda to the test tube.

      iv.          Shake the test tube and observe the color. A violet color indicates presence of proteins in the food item.

      Q19. What is a balanced diet? Is it same for everyone?

      Ans. A balanced diet is a diet that consists of variety of different types of food which provides all the nutrients in adequate amount for the proper functioning of the body. Balanced diet is not same for everyone as it depends on age, gender and occupation of a person.

      Q20. How can we cure anemia?

      Ans. To treat anemia we should eat iron rich food such as red meat, beans, dark green leafy vegetables (such as spinach), raisins, apple, tomatoes, plums, bananas, lemons, grapes, figs, carrots etc.


      Q21. On adding 2-3 drops of dilute iodine solution in a food item, it turns blue black. What does it indicate?

      Ans. It indicates that it contains starch.


      Q22. Why sunlight is important for our health?

      Ans. Sunlight helps our body to make vitamin D. Vitamin D is essential for bone health so we need sunlight for good health.


      Q23. Differentiate between Marasmus and Kwashiorkor.




           1.   It occurs due to deficiency of proteins, carbohydrates and fats in the diet.

      It is primarily caused due to insufficient intake of proteins.

           2.   It occurs in children below the age of 1 year.

      It occurs in children in the age group 1-5 years.

           3.   Body is reduced to skin and bones.

      Body swells due to retention of fluids.

           4.   Skin color does not change.

      Skin color changes.


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