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NCERT Class 6 Science Chapter 1 Components Of Food Long Question And Answers

Question 1. Paheli and Boojho peeled some potatoes and cut them into small pieces. They washed and boiled them in water. They threw away the excess water and fried them in oil adding salt and spices. Although the potato dish tasted very good, its nutrient value was less. Suggest a method of cooking potatoes that will not lower the nutrients in them.
Answer: Methods of cooking potatoes that will not lower their nutrient content are as follows

1. Potatoes should be first washed and then peeled and cut as washing the potato after peeling, removes some vitamins and minerals.
2. The excess water in which the potatoes were boiled should not be thrown away as it leads to the loss of some of the proteins and minerals. This should be avoided.
3. A small amount of water and less quantity of oil should be used for cooking as it conserves nutrients.

Question 2. Write a short note on the importance of a balanced diet for the human body.
Answer: A balanced diet is essential for maintaining good health and well-being. It involves consuming a variety of food items that provide the necessary nutrients to support body functions.

It mainly includes a mixture of carbohydrates, proteins, fats, vitamins and minerals. This combination helps to fuel the body, support growth and repair tissues.

Read and Learn More Class 6 Science Question And Answers

Question 3. Distinguish between the following

1. Malnutrition and undernutrition
2. Minerals (functions, sources) and carbohydrate (functions, sources)

Answer: Differences between malnutrition and undernutrition are as follows

Differences between minerals and carbohydrates are as follows

Question 6. Boojho was having difficulty seeing things in dim light. The doctor tested his eyesight and prescribed a particular vitamin supplement. He also advised him to include a few food items in his diet,

1. Which deficiency disease is he suffering from?
2. Which food component may be lacking in his diet?
3. Suggest some food items that he should include in his diet, (any four)

Answer:

1. Boojho is suffering from night blindness.
2. The food component which may be lacking in his diet is vitamin A.
3. The food items that he should include in his diet to overcome the deficiency of vitamins are carrots, papaya, milk, mango and fish oil.

Question 7.

1. A lot of awareness is being spread about the use of iodised salt in food. Why so?
2. What happens if iodine is not incorporated into our diet?
3. Iodine deficiency is most common in which place?
4. Deficiency of iodine leads to which disease?

Answer:

1. The use of iodised salt is very important as iodine is an important mineral nutrient needed in the body for supporting functions of the thyroid gland and other growth-related functions.
2. If iodine is not incorporated into our diet, it will lead to its deficiency. Thyroid functioning will be impaired along with growth and development. It causes swelling of the thyroid gland that is present in the neck.
3. In hilly areas, the food and drinking water are lacking in iodine. Thus, this deficiency is most commonly observed in these areas.
4. Deficiency of iodine causes goitre.

Question 8. How will you detect the presence of protein in soybeans?
Answer: The presence of protein in soybeans can be detected by the following procedure.

1. Prepare copper sulphate solution by dissolving 2 g of copper sulphate in 100 mL of water.
2. Dissolve 10 g of caustic soda in 100 mL of water.
3. Now grind the soybeans into a thin paste, with the help of a mortar and pestle. Transfer the paste to a clean test tube.
4. Add 10 drops of water into this test tube and shake it well.
5. Now, using a dropper add 2 drops of freshly prepared copper sulphate solution.
6. Then add 10 drops of caustic soda solution to the test tube and shake it well. The solution turns violet showing the presence of protein (soybean).

Question 9. Observe the given figure and answer the following questions.

Answer:

1. The food items shown are mainly rich in ‘X’, a nutrient component of food. What is X?
Answer: ‘X’ is a protein

2. Name the disease caused by deficiency of component X.
Answer: Kwashiorkor

3. What is the main function of ‘X’?
Answer: Proteins are required for the growth and repair of tissues in our body.

4. What chemicals are used to test the presence of the X in the food items?
Answer: Copper sulphate and caustic soda

Question 10. Fat-rich foods leave an oily patch on paper when smashed or rubbed on it. Raju wanted to check this through an activity. Fie performed the following steps.

• Step 1 Placed a fat-rich food item on a piece of white paper.
• Step 2 Smashed the food gently with a hammer.
• Step 3 Remove the smashed food from the paper.
• Step 4 Dried the paper and then checked for any patches on it.

1. In step 4, Raju dried the paper before checking for patches. What could be the most likely reason for this?
   Raju performed the same activity with four types of food. Which of the following will decide the amount of fat in each food item?

Answer:

1. The shape of the paper
Answer: Foods may also contain water that can leave a wet patch on the paper. For example, some food items contain moisture. Moisture can make a wet patch on a piece of paper.

2. Time taken for the paper to dry
Answer: Proteins are required for the growth and repair of tissues in our body.

3. The size of the oily patch on the paper
Answer: Fats

4. Ease of smashing the food with a hammer
Answer: A balanced diet

Question 11. Observe the given picture and table to answer the image of the following question–

Answer:

1. Which component of food does Arjun have in excess in his diet?
Answer: Fats

2. What kind of diet does Yash have?
Answer: A balanced diet

3. Write two features which may harm Arjun’s health
Answer: The features that may harm Arjun’s health are as follows

1. Taking lots of fats in his diet.
2. Lack of exercise in his lifestyle.
3. Skill-Based Questions As Per

Question 12. Check the presence of starch, protein and fat in the given food items and complete the table given below

Answer: The presence of starch, protein and fat in the given food items is shown in the following table-

Question 13. What do various nutrients do for our body?
Answer: Our body requires various types of food for a variety of purposes. For example, proteins help in body-building, carbohydrates and fats provide energy, and vitamins and minerals protect against diseases.

Question 14.

1. Are fats, proteins and starch present in all food items?
2. Does a food item contain more than one nutrient?
3. Is there any food item that does not contain any of the three nutrients?

Answer: No, not all the food items contain fats, proteins and starch. Certain food items contain fat whereas others contain protein or starch or variable amounts of these nutrients.

Yes, most food items like nuts, milk, vegetables, cooked pulses, etc. usually contain more than one nutrient.

Yes, good products like a slice of fruit or vegetable do not contain any of these three (fats, proteins and starch) nutrients.

Question 15. Are there any fresh vegetables or fruits that do not contain some amount of water?
Answer: No, fresh vegetables or Iruits contain some amount of water. To some extent, our body’s needs for water are met by this water.

Question 16. Does the need for a balanced diet depend on the amount of physical work that we do?
Answer: Yes, the need for a balanced diet depends on the level of physical work, age and sex. For example, a labourer needs more energy than compared man.

Question 17. Does animal food also consist of different components and do they also need a balanced diet?
Answer: Yes, animal food also consists of various components such as protein, fat, vitamins and minerals. Just like humans, animals also require a balanced diet for their maintenance and growth.

Question 18. Do you think that fat-rich foods are harmful to us if eaten too much?
Answer: Yes, I think that fat-rich foods are harmful to us if eaten too much as they may cause obesity and increase the risk of many health problems.

Question 19. Name the major nutrients in our food.
Answer: The major nutrients in our food are

1. Carbohydrates
2. Proteins
3. Fats
4. Vitamins
5. Minerals
6. Water and roughage

Question 20. Name the following.

1. The nutrients which mainly give energy to our body.
2. The nutrients that are needed for the growth and maintenance of our body.
3. A vitamin is required for maintaining good eyesight.
4. A mineral that is required for keeping our bones healthy.

Answer:

1. Carbohydrates and fats mainly give energy to our body.
2. Proteins and minerals are needed for the growth and maintenance of our body.
3. Vitamin A is required for maintaining good eyesight.
4. Calcium is a mineral that is required for keeping our bones healthy.

Question 21. Name two foods each rich in

1. Fats
2. Starch
3. Dietary fibre
4. Protein

Answer:

1. Oil and ghee are food items rich in fats.
2. Rice and potatoes are food items rich in starch.
3. Whole grains and fresh fruits are the food items rich in dietary fibre.
4. Pulses and milk are food items rich in protein.

Question 22. Write True Or Flase the correct statements.

1. By eating rice alone, we can fulfil the nutritional requirements of our bodies.
2. Deficiency diseases can be prevented by eating a balanced diet.
3. A balanced diet for the body should contain a variety of food items.
4. Meat alone is sufficient to provide all the nutrients of the body.

Answer:

1. By eating rice alone, we can fulfil the nutritional requirements of our bodies.- False
   • The statement is false because we can fulfil the nutritional requirements of our body by eating a balanced diet.
2. Deficiency diseases can be prevented by eating a balanced diet.- True
   • The statement is true because a balanced diet contains all the nutrients in adequate amounts needed by the body.
3. A balanced diet for the body should contain a variety of food items.- True
   • The statement is true because all the nutrients cannot be present in one type of food.
4. Meat alone is sufficient to provide all the nutrients of the body.- False
   • The statement is false because meat provides only proteins to our bodies.

NCERT Class 6 Science Chapter 1 Components Of Food Short Question And Answers

Question 1. Rohit was very tired when he came back home after school. His mother gave him a glass of water with glucose dissolved in it. Rohit felt refreshed. Does drinking only glucose water suffice for all the nutritional demands?
Answer: Glucose is the simplest form of carbohydrate and it is a source of instant energy. But drinking only glucose water will not provide a balanced diet because it only provides energy. We also need to intake body-building and protective foods, along with roughage.

Question 2. Write any two points indicating the importance of protein in our diet.
Answer: Proteins are needed in our diet because

• They are essential for the growth and repair of body tissues.
• They also play an important role in building and maintaining muscles.

Question 3. Read the items of food listed below. Classify them into carbohydrate-rich, protein-rich and fat-rich foods and fill them in the given table. Moong dal, fish, mustard oil, sweet potato, milk, rice, egg, beans, butter, buttermilk (chhachh), cottage cheese (paneer), peas, maize, and white bread.

Answer: The complete filled table is

Question 4. Minerals and vitamins are needed in very small quantities by our body as compared to other components, yet these are important parts of a balanced diet. Explain the statement.
Answer: Though minerals and vitamins are needed in very small quantities by our body, these are important parts of a balanced diet because

Vitamins are necessary for good eyesight (vitamin A), growth (vitamin-B,), keeping teeth, gums and joints healthy (vitamin C) and normal growth of bones (vitamin D).

Minerals are needed in our body for building bones and teeth (calcium and phosphorus), formation of blood (iron), strengthening of bones (calcium) and functioning of thyroid gland (iodine).

Question 5. Water does not provide nutrients, yet it is an important component of food. Explain.
Answer: Water does not provide nutrients, yet it is an important component of food because it helps

1. To transport digested food to body cells.
2. To absorb nutrients from the food.
3. To get rid of waste products from the body.
4. To control and regulate the body temperature.

Question 6. Paheli avoids eating vegetables but likes to eat biscuits, noodles and white bread. She frequently complains of stomachache and constipation. What are the food items that she should include in her diet to get rid of the problem? Give a reason for your answer.
Answer: Paheli should include roughage in her diet. It is the fibrous matter in food that cannot be digested in our bodies. It has no nutritive value, but its presence is essential for the normal functioning of the digestive system. It helps our body to get rid of undigested food.

Thus, Paheli must include whole grains, pulses, fresh fruits and vegetables in her diet as fibre (roughage) is found in these food items.

Question 7. A family eats boiled eggs, bread toast and orange juice for breakfast. Is it a nutritious and healthy breakfast? Which nutrients are they taking in?
Answer: Yes, the family is eating a healthy breakfast because it includes all the nutrients. The nutrients they are consuming are

1. Eggs rich in protein and fat,
2. Bread rich in starch and roughage,
3. Orange juice is rich in vitamins and roughage.

Question 8. Is a balanced diet an expensive diet? Give reasons to support your answer.
Answer: No, a balanced diet is not an expensive diet. It includes food items like pulses, groundnuts, soybean, sprouted seeds (moong), spinach, banana, sattu, jaggery, a combination of flours (missi roti, thepla made from cereals and pulses), vegetables and other such foods that provide nutrients.

Question 9. Tasty food is not always nutritious and nutritious food may not always be tasty to eat. Comment with examples.
Answer: Tasty food is not always nutritious and nutritious food may not always be tasty to eat.

Certain examples in favour of the above statements are

1. Potato chips are tasty to eat but are not nutritious as they contain a huge amount of fat.
2. Green leafy vegetables either boiled or steamed are very nutritious but not good in taste.
3. Certain fast foods like pizza, burgers, etc., are very good to taste but are not nutritious as they contain a huge amount of fat.

Question 10. Doctors advise not to boil fruits before eating. What could be the likely reason for this? Circle ‘Yes’ or ‘No’ for each statement.
Answer:

Question 11. Write any two symptoms that will appear in the individual if the diet is deficient in both carbohydrates and proteins for a long period.
Answer: The following symptoms will appear if the diet is deficient in both carbohydrates and proteins for a long period

• The growth of an individual may stop completely.
• Such an individual becomes very lean, thin and weak.
• He or she may not even be able to move.

Question 12. A mineral causes anaemia when it is not present in sufficient concentration. Name this mineral. What are the symptoms associated with this disease? Also, list a few sources of this mineral.
Answer: Anaemia occurs in the absence of iron. This mineral is essential for making haemoglobin in red blood cells. Its deficiency results in blood deficiency in haemoglobin. Thus, the blood of a person cannot carry sufficient oxygen to all parts of the body.

Symptoms of this disease are

1. Pale appearance, nails turn white.
2. Extreme weakness.
3. Insignificant weight loss

Question 13. How can an individual prevent rickets and night blindness by controlling his diet? Name some food items that he should add to his die
Answer: An individual should eat more foods containing vitamin D and vitamin A to prevent rickets and night blindness, respectively. The rich sources of vitamin D include butter, milk, egg and fish. Food items such as mango, carrot, papaya and milk are rich in vitamin A.

Question 14. While using iodine in the laboratory, some drops of iodine fell on Paheli’s socks and some fell on her teacher’s saree. The drops of iodine on the saree turned blue-black while their colour did not change on the socks. What can be the possible reason?
Answer: The drops of iodine are used to detect the presence of starch in the food item. The possible reason for the appearance of a blue-black colour on the teacher’s saree is due to the presence of starch. The saree would have been starched. Paheli’s socks did not have starch on them, therefore, their colour did not change.

Question 15. Can you test and identify which of the following food items are fatty foods, i.e. food which is rich in fats? How will you test them? Pulses, oil, wheat grains, butter, meat, rice, chapati, cucumber, pizza, poori and groundnuts.
Answer: Fats can be tested by a simple test

• Take small amounts of all food materials one by one.
• Place them on a clean white paper and rub with a little force.
• Hold the paper towards the light.
• If a greasy, translucent spot appears, it indicates that the food item is rich in fats. Out of all food items, the following are fat-rich foods: Oil, butter, meat, pizza, poori, and groundnuts.

NCERT Class 6 Science Chapter 1 Components Of Food Very Short Questions And Answers

Question 1. Which type of vitamin is found plenty in lemon?
Answer: 2. Vitamin C

Question 2. Name two substances which provide carbohydrates.
Answer: Potato Wheat

Question 3. Sarthak advises his mother not to sieve wheat flour before making dough. Can you state why?
Answer: This is because the husk in wheat flour is rich in carbohydrates and roughage.

Question 4. Give the name of two components of food which provide energy.
Answer: Carbohydrates and fats are two components of food which provide energy.

Question 5. Proteins are called as building blocks of our body. Why?
Answer: Proteins are called building blocks as they help in the building of muscles of the body.

Question 6. Fat-rich foods are harmful to us if we eat them too much. What do you think?
Answer: Yes, it can be very harmful to eat too much fat-rich foods. Excess of unused fats gets deposited in our bodies and leads to obesity.

Question 7. Which vitamin represents a group of vitamins?
Answer: Vitamin-B complex.

Question 8. There are various types of vitamins. Name them.
Answer: Vitamin-A, C, D, E, K and B-complex.

Question 9. Out of the following food items, which one does not provide any nutrients?
Milk, Water, Orange juice, Tomato soup
Answer: Among the given food items, water does not provide any nutrients. The milk provides proteins, fats and vitamin D while orange juice and tomato soup provide vitamin C.

Question 10. Name a vitamin which is prepared in our body in the sunlight.
Answer: Vitamin D is synthesised when our skin is exposed to sunlight.

Question 11. What is the reason for incorporating salad into our diet?
Answer: Raw vegetables are a good source of various vitamins and minerals.

Question 12. Identify two major sources of carbohydrates from the table below.

Answer: Carbohydrates are the main source of energy. Some sources of carbohydrates are sweets, roti/bread, etc.

Question 13. Unscramble the following words related to components of food and write them in the space provided.

1. Relnpot…………………..
2. Menliars…………………..
3. Tivanmi…………………..
4. Bocatradhyer…………………..
5. Nitesturn…………………..
6. Tfa…………………..

Answer:

1. Protein
2. Minerals
3. Vitamin
4. Carbohydrate
5. Nutrients
6. Fat

Question 14. What happens to our bodies when we do not drink enough water for two or more days?
Answer: Severe dehydration develops in the absence of water which can even lead to death.

Question 15. Is there a way to find the presence of water in food?
Answer: Yes, vegetables and fruits like spinach leaves, tomatoes, melon and oranges when cut release a small amount of water. This indicates that these food materials contain water.
Answer:

Question 16. List the main function of roughage in our diet.
Answer: The main function of roughage is to help our body to get rid of undigested food.

Question 17. Are there any ingredients in food which do not provide any nutrients?
Answer: Water and roughage are two ingredients in food which do not provide any nutrients.

Question 18. Will the diet of a person working in an office on the computer be different from that of a construction labour?
Answer: Yes, the labour need more energy-giving foods like carbohydrates and fats as compared to a person who indulges in less physical activity.

Question 19. Fill in the missing terms in the following chart.
Answer:

Answer:

Question 20. Is there a situation called overnutrition?
Answer: Yes, excessive intake of food or overnutrition can lead to a condition called obesity.

Question 21. Food provides some components to our body which are essential for healthy survival. What will happen in their absence?
Answer: In the absence of nutrients our body will become very weak and various deficiencies/diseases can occur.

Question 22. Name the problems which occur due to a lack of proteins in our diet.
Answer: Swelling of face, discolouration of hair, skin diseases and diarrhoea.

Question 23. Blood clotting is a function of which nutrients?
Answer: Vitamin K helps in the clotting of blood.

Question 24. Write the main cause of the disease called ‘goitre’.
Answer: Goitre is a disease caused due to a deficiency of iodine.

Question 25. If an appropriate amount of vitamin D is not formed in the body or taken from food sources, what will happen?
Answer: Rickets, a condition that causes bones to become soft and bent (deformed bones), results from the deficiency of vitamin D.

Question 26. Iodine solution is used to detect the presence of which food component?
Answer: The iodine solution is used to detect the presence of carbohydrates.

NCERT Class 6 Science Chapter 1 Components Of Food Fill In The Blanks

Question 1. Coconut oil is a rich source of…………..
Answer: Fats

Question 2. Lack of nutrients leads to…………… disease.
Answer: Deficiency

Question 3. In an experiment conducted, the presence of translucent and greasy spots shows the presence of………….
Answer: Fats

Question 4. …………. is caused by a deficiency of vitamin D.
Answer: Rickets

Question 5. A deficiency of …………. causes a disease known as beriberi.
Answer: Vitamin B

Question 6. Deficiency of vitamin C causes a disease known as ………….
Answer: Scurvy

Question 7. Night blindness is caused by to deficiency of …………. in our food.
Answer: Vitamin A

Question 8. Both eggs and ………. are rich in ……….
Answer: Peas, proteins

Question 10. ………. is a rich source of fat.
Answer: Butter

Question 11. (fruit) is a rich source of vitamin A.
Answer: Papaya

Question 12. Milk provides vitamin D and ……….(mineral)
Answer: Protein, calcium

Question 13. Spinach is a good source of the mineral……….
Answer: Iron

NCERT Class 6 Science Chapter 1 Components Of Food True Or False

Question 1. Water is a rich source of nutrition.
Answer: False

Question 2. The violet colour shows the presence of starch when tested with an iodine solution.
Answer: False

Question 3. The components of food are called nutrients.
Answer: True

Question 4. Carbohydrates are called body-building food.
Answer: False, carbohydrates are energy-giving foods. They give us energy to carry out all functions of the body.

Question 5. Proteins are called energy-giving food.
Answer: False, proteins are called body-building foods as they help in the growth and maintenance ofthe body.

Question 6. The richest source of energy is fats.
Answer: True

Question 7. Amla is the richest source of vitamin C
Answer: False.

NCERT Class 6 Science Chapter 1 Components Of Food Assertion-Reason Questions

The following questions consist of two statements assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.

1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true, but R is not the correct explanation of A
3. A is true, but R is false
4. A is false, but R is true

 

1. Assertion (A) Food containing fats and carbohydrates is called protective food.
2. Reason (R) Fats provide twice as much energy provided by the same amount of carbohydrates.
3. Assertion (A) Roughage is necessary for our body. Reason (R) It does not provide any nutrition.
4. Assertion (A) In anaemia, there is extreme fatigue and weakness. Reason (R) It is due to the deficiency of iron.

Answers

1. A is false, but R is true. A can be corrected as Food containing fats and carbohydrates is called energy-giving food. The food items rich in vitamins and minerals are called protective foods.
2. Both A and R are true, but R is not the correct explanation of A. It can be corrected as Roughage is necessary for our body because it forms the bulk and helps in the removal of undigested food. It does not provide any nutrition to our body.
3. Both A and R are true and R is the correct explanation of A.

Question 2. The following questions consist of two statements Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.

1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true, but R is not the correct explanation of A
3. A is true, but R is false
   A is false, but R is true

Answer:

Question 1. Assertion (A) In scurvy, there are bleeding gums and wounds take a longer time to heal. Reason (R) It is due to the deficiency of vitamin D.
Answer: 3. A is true, but R is false

Question 2. Assertion (A) Repeated washing of rice and pulses removes some nutrition present in them. Reason (R) Useful proteins and a considerable amount of minerals are lost.
Answer: 2. Both A and R are true, but R is not the correct explanation of A.

NCERT Class 6 Science Chapter 1 Components Of Food Match The Columns

Question 1. Match the Column 1 with Column 2.

Answer: A-4, B-3, C-2, D-1, E-5

Question 2. Match the Column 1 with Column 2

Answer: A-2, B-3, C-4, D-6, E-1, F-5