RBSE Class 6 Science Important Questions Chapter 2 Components of Food

Rajasthan Board  RBSE Class 6 Science Important Questions Chapter 2 Components of Food Important Questions and Answers.

RBSE Class 6 Science Chapter 2 Important Questions Components of Food

Multiple Choice Questions

Question 1. 
Which among the following provides maximum roughage to the diet if taken in equal amount?
(a) Cabbage 
(b) Grapes
(c) Cucumber 
(d) Egg
Answer: 
(a) Cabbage 

 

Question 2. 
Which of the following are the sources of vitamin A?
(a) Carrot, leafy vegetables, egg yolk
(b) Sprouts, cereals, nuts
(c) Oranges, tomatoes, grapes
(d) Fish oil, sunlight
Answer: 
(a) Carrot, leafy vegetables, egg yolk

Question 3. 
Which of the following are the sources of vitamin D?
(a) Green leafy vegetables
(b) Sprouts, cereals, nuts
(c) Cabbage/tomatoes
(d) Fish oil, sunlight
Answer: 
(d) Fish oil, sunlight

Question 4. 
Excess fats cause:
(a) blindness 
(b) diabetes
(c) obesity 
(d) rickets
Answer: 
(c) obesity 

Question 5. 
Examples of starch providing food are:
(a) eggs, meat and fish
(b) glucose, sugarcane and milk 
(c) lemon, orange and carrot
(d) maize, rice and potato
Answer: 
(d) maize, rice and potato

Question 6. 
The deficiency of vitamin D causes:
(a) weakness 
(b) weak bones
(c) weak muscles 
(d) bleeding gums
Answer: 
(b) weak bones

Question 7. 
The food components needed by our body are called:
(a) ingredients 
(b) nutrients
(c) fragments 
(d) diet
Answer: 
(b) nutrients

Question 8. 
Vitamins and minerals are:
(a) protective food
(b) energy giving food
(c) bodybuilding food
(d) roughage
Answer: 
(a) protective food

Fill in the Blanks

Question 1. 
The energy-rich nutrient is ................
Answer: 
carbohydrate

Question 2. 
Starch gives ................  colour with iodine.
Answer: 
blue or black

Question 3. 
Amla is the best source of ................
Answer: 
Vitamin C

Question 4. 
The edible substances which we eat to get energy are called .................
Answer: 
food

Question 5. 
Scurvy is a disease caused by deficiency of ................
Answer: 
Vitamin C.

State whether True or False

Question 1. 
Calcium is necessary for skin.
Answer: 
False

Question 2. 
Balanced diet contains all nutrients.
Answer: 
True

Question 3. 
Roughage keeps our body free from indigestible substances.
Answer: 
True

Question 4. 
Tomatoes are the source of vitamin C.
Answer: 
True

Question 5. 
Lack of vitamin K leads to feeling of tiredness.
Answer: 
False

Match the followings

Column I	Column II
Disease	Deficiency of Vitamins/Minerals
1. Beriberi	(a) vitamin C
2. Scurvy	(b) calcium
3. Swollen gland neck	(c) vitamin D
4. Bone and tooth decay	(d) iron
5. Anemia	(e) vitamin A
6. Loss of vision	(f) vitamin B1
7. Bones become soft and bent	(g) iodine

Answer:

Column I	Column II
Disease	Deficiency of Vitamins/Minerals
1. Beriberi	(f) vitamin B1
2. Scurvy	(a) vitamin C
3. Swollen gland neck	(g) iodine
4. Bone and tooth decay	(b) calcium
5. Anemia	(d) iron
6. Loss of vision	(e) vitamin A
7. Bones become soft and bent	(c) vitamin D

Very Short Answer Type Questions

Question 1. 
Where do we get ingredients for food?
Answer: 
We get ingredients for food from plants and animals.

Question 2. 
What happens when two or more drops of iodine solution fall on starch substance?
Answer: 
When two or more drops of iodine solution fall on starch substance, its colour turns to blue-black.

Question 3. 
Do all food items contain all types of nutrients?
Answer: 
No, different food items contain different types of nutrients.

Question 4. 
Write the names of sources of protein and their function in our body. Answer: Beans, pulses, milk products are some sources of proteins. They are needed for growth and development of our body.

Question 5. 
Name two nutrients which protect the body from diseases.
Answer: 
Vitamins and proteins.

Question 6. 
Name two plant food items that provide proteins
Answer: 
Nuts and pulses.

Question 7. 
Why do we need vitamin A?
Answer: 
Vitamin A keeps our skin and eyes healthy.

Question 8. 
Name a vitamin that represents a group of vitamins.
Answer: 
Vitamin B complex.

Question 9. 
Which vitamin gets destroyed on heating the food?
Answer: 
Vitamin C gets destroyed on heating. 

Question 10. 
Why do we need vitamin K?
Answer: 
It helps in clotting of blood during injuries. Foods with vitamin K are cabbage, spinach, etc.

Question 11. 
Why do we need vitamin B complex?
Answer: 
It is needed for a healthy brain, nerves and muscles.

Question 12. 
Fats are more energetic than carbohydrates at the same time they can be harmful. Comment on it.
Answer: 
Fats have more energy than carbohydrates but excess of fat results in obesity.

Question 13. 
What do you mean by deficiency?
Answer:
The absence of a particular nutrient in food for a long time is called deficiency. 

Short Answer Type Questions

Question 1. 
How can we check the presence of starch, protein and fat in food?
Answer: 
Test for starch: Take a small amount of food in a plate. Put few drops of dilute iodine solution on it. If the colour of food changes to blue-black, it shows the presence of starch. Test for protein: Take a small amount of food in a plate. Make it a paste or powder. Put few drops of copper sulphate (CuS04) and then few drops of caustic soda (NaOH) on it, if the colour of food changes to violet, it shows the presence of protein. Test for fat: Take a small quantity of a food item. Wrap it in a piece of paper and crush it. If it leaves oily patch on paper then it contains fats.

Question 2. 
What is the role of vitamin C? 
Answer: 
Vitamin C is needed for healing damaged tissues and for repairing and maintaining bones and teeth. It also fights against many diseases like common cold. We get vitamin C from orange, lemon, etc.

Question 3. 
Name different kinds of vitamins and their sources.
Answer: 
Vitamin A: Fish oil, milk. 
Vitamin C: Orange, lemon
Vitamin D: Fish, egg, butter, milk.
Vitamin E and K: Almonds, spinach, sweet potatoes.
Vitamin B
complex: Meat, liver.

Question 4. 
Name some important minerals required by our body and their sources too.
Answer: 
(a) Iodine: Fish, spinach, curd, potatoes.
(b) Phosphorus: Milk, banana, chilli, whole grains, rice.
(c) Iron: Liver, meat, fish, tofu, eggs, pulses, spinach, beans, brown rice.
(d) Calcium: Egg, milk, oatmeal.
 
Question 5. 
What are dietary fibres? Write some examples of dietary fibre.
Answer: 
Dietary fibres are the important part of our food. It helps in preventing heart diseases, weight gain, etc. It is very helpful in improving digestion and preventing constipation. Whole grains, pulses, potatoes, fruits and vegetables are some examples of dietary food.

Question 6. 
Write two types of carbohydrates with their examples.
Answer: 
Starch and sugar are two types of carbohydrates. Examples of starch-content foods are wheat and rice. Examples of sugar-content foods are sugarcane, banana, sugar beet, etc.

Question 7. 
Why does a growing child need more minerals and vitamins?
Answer: 
Minerals and vitamins are important for a variety of body functions like building strong bones and teeth, maintaining haemoglobin in blood, healthy skin, healthy growth of hair, appropriate nerve function, and development of muscles. Children have different nutritional needs as compared to adults. They need proper nutrition for growth, development and good performance so they need more minerals and vitamins. 

Question 8. 
Write the main functions of fat. 
Answer: 

1. Fat provides energy to the body.
2. It provides solvents for fat-soluble vitamins.
3. It is an important form for food storage.
4. It protects the body against rapid loss of heat if taken in right amount.

Question 9. 
Do you also think that, what we need for a balanced diet would depend on the amount of physical work that we do?
Answer: 
Yes, a balanced diet depends on the amount of physical work that we do. We take energy from the food. The amount of energy required by our body depends upon the amount of physical activity we do. It  is the energy that influences our weight, shape and body performance.

Question 10. 
What are the symptoms of deficiency of vitamin D? What is the disease caused hy it?
Answer: 
The symptoms of vitamin D deficiency are bone pain and muscle weakness. The disease caused by its deficiency is rickets, in which the bone tissue doesn’t properly mineralise, leading to soft bones and skeletal deformities.

Question 11. 
If a person is suffering from iodine deficiency, what are the symptoms of it and what is the disease caused by it?
Answer: 
The symptoms of iodine deficiency are swollen neck, unexpected weight gain or loss, weakness, hair loss, etc: The deficiency of iodine causes swelling of glands in the neck known as goitre and mental disability in children.

Long Answer Type Questions

Question 1. 
Describe the functions of different types of nutrients present in our food? 
Answer: 

1. Carbohydrates: It is the main source of energy of our body. It is known as energy-giving food. There are two types of carbohydrates: glucose and starch. We get carbohydrates from wheat, maize, rice, banana and potato, etc.
2. Proteins: Proteins are also known as body-building food as it helps in body growth and repair damage tissues of our body. We get proteins from milk, eggs, meat, fish, and all kinds of pulses.
3. Fats: Fats produce more energy than carbohydrates in our body. We get fats from butter, cream, vegetable oils, meat, etc.
4. Vitamins: Vitamins are necessary for growth and maintenance of our body. It does not provide energy. For example vitamin A, B, C, D, E, etc. Sources of vitamins are carrot, potato, spinach, etc.
5. Minerals: Minerals are also important for the growth and staying healthy. Our body requires minerals in small amounts. For example - iodine, iron, calcium, phosphorus, sodium and potassium are common minerals. We can get minerals from dairy products, leafy vegetables, orange juice, cereals, etc.
6. Water: Water is needed by our body to absorb nutrients from the food. It helps in removing body waste through urine, stool and sweat.

Question 2. 
Name the food needed:

1. For strong bones and teeth
2. To prevent scurvy
3. To avoid constipation
4. For warmth
5. For growth

Answer: 

1. For strong bones and teeth: We need calcium-rich food such as milk, cheese, tofu, nuts, fish, soybeans, etc.
2. To prevent scurvy s We need vitamin C-rich food such as broccoli, lemons, oranges, papaya and strawberries, etc.
3. To avoid constipation: We should have lots of water, and other food including yoghurt, black beans, almonds, broccoli, etc.
4. For warmth: Ginger tea, turmeric, porridge, etc.
5. For growth: Food rich in protein e.g. milk and dairy products, chicken, oatmeals, meat, fish, etc.