CBSE Class 6 Science Chapter 2 NCERT Solutions

CBSE Class 6 Science 

Chapter 2: Components of Food 

NCERT Solutions

1. Name the major nutrients in our food.
Answer: The major nutrients in our food are carbohydrates, proteins, fats, vitamins and minerals.

2. Name the following:
(a) The nutrients which mainly give energy to our body.
(b) The nutrients that are needed for the growth and maintenance of our body.
(c) A vitamin required for maintaining good eyesight.
(d) A mineral that is required for keeping our bones healthy.

Answer:
(a) Carbohydrates
(b) Proteins
(c) Vitamin A
(d) Calcium

3. Name two foods each rich in:
(a) Fats
(b) Starch
(c) Dietary fibre
(d) Protein 

Answer:
(a) Fats: Meat and Oil
(b) Starch: Wheat and Potato
(c) Dietary fibre: Fresh fruits and potato
(d) Protein: Milk and Egg

4. Tick (√) the statements that are correct.
(a) By eating rice alone, we can fulfill nutritional requirement of our body. (   )
(b) Deficiency diseases can be prevented by eating a balanced diet. (   )
(c) Balanced diet for the body should contain a variety of food items. (   )
(d) Meat alone is sufficient to provide all nutrients to the body. (   )

Answer:
(a) By eating rice alone, we can fulfill nutritional requirement of our body. (   )
(b) Deficiency diseases can be prevented by eating a balanced diet. (√ )
(c) Balanced diet for the body should contain a variety of food items. (√ )
(d) Meat alone is sufficient to provide all nutrients to the body. (   )

5.   Fill in the blanks.
(a) ______________ is caused by deficiency of Vitamin D.
(b) Deficiency of ______________ causes a disease known as beri-beri.
(c) Deficiency of Vitamin C causes a disease known as ______________.
(d) Night blindness is caused due to deficiency of ____________ in our food.

Answer:

(a) Rickets
(b) Vitamin B1
(c) Scurvy
(d) Vitamin A

CBSE Class 6 Science Chapter 2 Additional Questions

CBSE Class 6 Science 

Chapter 2: Components of Food 

Additional Questions

1. What is meant by nutrients? What are the nutrients present in our food?
2. How can we find the presence of carbohydrates in our food?
3. Explain the test to find the presence of protein in our food
4. Why does the foods containing proteins are called body building foods?
5. Give a short note of vitamins its functions, types with examples
6. What is roughage? What is it function in our body? What are different sources of roughage?
7. How does water is useful in the functioning of our body?
8. What is meant by balanced diet?
9. What is meant by deficiency diseases? Explain with two examples  

Answers:

1. Nutrients are components present in the food, which is required for your body. The major nutrients present in our food are carbohydrates, proteins, fats, vitamins and minerals.
2. In order to test the presence of starch in the food item or a raw ingredient, we need to add 2-3 drops of dilute iodine solution into it. If the colour of food item/raw ingredient changes to blue-black, it shows the presence of starch in it.
3. In order to test the food item for protein, take it in a test tube. If it is in solid state, we need to powder or mash it and then dilute it with few drops of water, before doing the test. Then in the test tube add two drops of Copper Sulphate and ten drops of Caustic Soda into it. The colour of the food items changes to violet, which indicates the presence of protein in it.
4. Proteins helps in the growth of the our body. It also help us to repair the damaged cells and tissues. Hence the food containing protein are called 'body building foods'.
5. Vitamins help in protecting our body against diseases, keeping our eyes, bones, teeth and gums healthy. There are different kinds of vitamins required for our body. They are Vitamin A, Vitamin C, Vitamin K etc. Our body needs all types of vitamins in small quantities. Vitamin A keeps our skin and eyes healthy. Vitamin C helps body to fight against many diseases. Vitamin D helps our body to use calcium for bones and teeth
6. Roughage are dietary fibres, helps our body to get rid of undigested food. Even though it does not provide any nutrients to our body, it is essential component of our food. The main source of roughage are plant products such as whole grains and pulses, potatoes, fresh fruits and vegetables
7. Water helps our body to absorb nutrients from food. It also helps in throwing out some wastes from body as urine and sweat.
8. The Balanced diet is the diet which contains all the the nutrients that our body needs, in right quantities. It is required for the growth and maintenance of good health . The balanced diet will also contain a good amount of roughage and water. 
9. Diseases that occur due to lack of nutrients over a long period are called deficiency diseases. Two examples for deficiency diseases are Scurvy and goiter. Scurvy is caused due to the deficiency of Vitamin C and Goiter is due the lack of Iodine in our food.

Class 6 Science Chapter 2 Fill in the blanks

CBSE Class 6 Science 

Chapter 2: Components of Food 

Fill in the blanks

1. The components in the food which is needed in our body are called ------------------------
2. The main carbohydrates found in our food are in the form of  ------------- and ---------------.
3. The presence of starch changes the colour of the food item into ----------------colour, when Iodine Solution is added.
4. ------------ and ------------- is used to test the presence of protein in the food.
5. The presence of ----------- in the paper, when it is wrapped and crushed with food item, shows the presence of fat in it.
6. Food containing carbohydrates and fats are called ----------------------------.
7. ------------ are needed for the growth and repair of our body.
8. ------------help in protecting our body against diseases.
9. Vitamin A keeps our ------------- and ----------------healthy.
10. -------------helps our body to use calcium for bones and teeth.
11. ------------- is an example of 'carbohydrate rich' source of food.
12. Dietary fibres are also known as -------------------.
13. -------------does not provide any nutrients to our body.
14. ---------------help our body to get rid of undigested food.
15. -------------- help our body to absorb nutrients from food.
16. The ------------------ of many vegetables and fruits contains vitamins and minerals.
17. -------------- gets easily destroyed by heat during cooking
18. Eating too much of fat rich foods cause --------------.
19. The deficiency disease caused by the lack of Vitamin C is -----------------
20. Goiter is due to the deficiency of ----------------------.
21. Deficiency of iron causes -----------------.
22. Swollen glands in the neck is a symptom of -----------disease.
23. Beriberi causes due the lack of ----------------.
24. Bones becomes soft and bend due to the deficiency of -----------------.
25. Our body prepares -------------- in the presence of sunlight.

Answers:

1. nutrients
2. starch and sugars
3. blue-black 
4. Copper Sulphate and Caustic Soda
5. oil patch
6. energy giving foods
7. Proteins
8. Vitamins
9. skin and eyes
10. Vitamin D
11. Rice
12. roughage
13. Roughage
14. Roughage
15. Water
16. skin
17. Vitamin C
18. obesity
19. Scurvy
20. Iodine
21. Anaemia
22. Goiter
23. Vitamin B1
24. Vitamin D
25. Vitamin D