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Which of the following materials did people use in ancient times for making clothes? (i) Leaves of trees (ii) Newspaper (iii) Metal foils (iv) Animal skins and furs (a) (i) and (ii) (b) (i) and (iii) (c) (ii) and (iii) (i) and (iv)

Solution: (d) : Leaves of trees and Animal skins and furs. In ancient times people used bark and leaves of trees, skin and fur of animals to cover their bodies. In those times newspapers and metal foils were not available.

ScienceClass 6CBSE

Which statement out of the following is incorrect? (a) Use of charkha was popularised by Mahatma Gandhi as a part of the Independence Movement. (b) In India, jute is mainly grown in Kerala and Punjab. (c) To make fabric, the fibres are first converted into yarns. Sufi saint Kabir was a weaver.

Solution: : In India, jute is mainly grown in Kerala and The correct answer is: In India, jute is mainly grown in Bihar, West Bengal, Assam and Andhra Pradesh.

ScienceClass 6CBSE

Paheli wants to present her friend a gift made of plant-fibre. Which out of the following will she select? (a) Jute bag (b) Woollen shawl (c) Silksaree Nylon scarf

Solution: : Jute Bag Jute is a natural plant fibre which is long, soft, shiny that can be spun into coarse strong threads. It is obtained from the stems of jute plants (Corchorus). Wool is obtained from the fur of animals like sheep, yak etc. Silk is obtained from silkworms. Nylon is a man made fibre which is synthesized using chemicals at factories.

ScienceClass 6CBSE

Boojho was having difficulty in 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. (a) Which deficiency disease is he suffering from? (b) Which food component may be lacking in his diet? Suggest some food items that he should include in his diet, (any four)

Solution: Boojho is suffering from night blindness which results in difficulty of seeing things in dim light. Deficiency of vitamin A causes night Hence vitamin A might be lacking in his diet. In his diet, Boojho can include food items such as carrot, spinach, papaya, milk, green leafy, vegetables, fish oil, etc. which are rich in vitamin A.

ScienceClass 6CBSE

Water does not provide nutrients, yet it is an important component of food’.

Water is an important component of our food because Water help carry nutrients from food to all cells in our body and oxygen to Water helps in flushing out toxins and wastes in the form of urine and Water allows the body to absorb and assimilate vitamins, minerals Water helps to regulate body

ScienceClass 6CBSE

Minerals and vitamins are needed in very small quantities by our body as compared to other components, yet, they are an important part of a balanced diet’. Explain the statement.

Minerals and vitamins are needed in very small quantities but are essential for the normal functioning of our body. Because They are protective foods which help in protecting our body against They help in maintaining the normal growth of our They provide good immunity levels which leads to good

ScienceClass 6CBSE

a) List all those components of food that provide nutrients. (b) Mention two components of food that do not provide nutrients.

(a) Components of food that provide nutrients are carbohydrates, fats, proteins, vitamins and minerals. (b) Components of food that do not provide nutrients are water and roughage.

ScienceClass 6CBSE

1. Paheli avoids eating vegetables but likes to eat biscuits, noodles and white bread. She frequently complains of stomach ache and constipation. What are the food items that she should include in her diet to get rid of the problem? Give reason for your answer.

Paheli should include whole grains, whole pulses, fresh fruits and vegetables in her diet to get rid of her problems. These food items contain roughage (dietary fiber) which is lacking in Paheli’s diet. Paheli should avoid eating biscuits, noodles and white bread as they are made up of refined flour (Maida) which does not contain any roughage or fiber. Roughage prevents constipation.

ScienceClass 6CBSE

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.

Potatoes are nutritious vegetables that provide carbohydrates, vitamins (especially vitamin C), minerals and dietary fiber. Consuming potatoes along with their skin (peel) provides extra dietary fiber and nutrients. A method of cooking potatoes that will not lower their nutrient value is: Wash the potatoes and cut them into thin slices. Cook the potatoes with some water along with little amount of oil and by adding salt and spices. Cover the cooking pot while cooking. This method helps to conserve the nutrients of potatoes.

ScienceClass 6CBSE

While using iodine in the laboratory, some drops of iodine fell on Paheli’s socks and some fell on her teacher 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?

The saree of Paheli’s teacher would have contained starch. When starch is exposed to iodine solution, starch turns into blue black so the saree also turned blue- black. Paheli’s socks would have not contained starch thus did not show any colour change.

ScienceClass 6CBSE

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

Tasty food is not always nutritious like, burger, pizzas, chats, potato chips etc. are very tasty but not nutritious. These foods contain refined flour (Maida), spices and lot of oil which is not good for health. On the other hand, nutritious food may not always be tasty to eat like, boiled vegetables, pulses, leafy vegetables etc. are not always tasty but are very good for health. These foods contain important nutrients (proteins, vitamins, minerals etc.) which help us to

ScienceClass 6CBSE

1. 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, butter milk (chhachh), cottage cheese (paneer), peas, maize, white bread. Carbohydrate Rich food Item (A) Protein Rich food Item (B) Fat Rich food Item (C) …… ……. ……. …… ……. ……. …… ……. …….

Solution: Carbohydrate Rich food Item (A) Protein Rich food Item (B) Fat Rich food Item (C) Sweet potato Moong dal Mustard oil Rice Fish Cottage Cheese Maize Milk Milk White bread Egg Egg Beans Butter Butter milk Fish Cottage cheese Peas

ScienceClass 6CBSE

Fill in the blanks from the list of words given below. (carbohydrate, fat, protein, starch, sugar, vitamin A, vitamin C, roughage, balanced diet, obesity, goitre) (a) Egg yolk is rich in and egg albumin is rich in . (b) Deficiency diseases can be prevented by taking a . (c) Eating too much of fat rich foods may lead to a condition called . (d) The component of food that does not provide any nutrient to our body and yet is essential in our food is . The vitamin that gets easily destroyed by heating during cooking is .

Solution: fat, protein balanced diet obesity roughage vitamin C

ScienceClass 6CBSE

Which of the following food items does not provide any nutrient [Milk, Water, Orange juice, Tomato soup]

Water does not provide any nutrients to human body, yet it is essential for life.

ScienceClass 6CBSE

Unscramble the following words related to components of food and write them in the space provided. (a) reinpot (b) menliars (c) tivanmi (d) bocatradhyer (e) nitesturn tfa

Solution: Protein Minerals Vitamin Carbohydrate Nutrients Fat

ScienceClass 6CBSE

Given below are the steps to test the presence of proteins in a food item. (i) Take a small quantity of the food item in a test tube, add 10 drops of water to it and shake it. (ii) Make a paste or powder of food to be tested. (iii) Add 10 drops of caustic soda solution to the test tube and shake well. (iv) Add 2 drops of copper sulphate solution to it. Which of the following is the correct sequence of the steps? (a) i, ii, iv, iii (b) ii, i, iv, iii (c) ii, i, iii, iv iv, ii, i, iii

(b): ii, i, iv, iii To test the presence of proteins in a food item, first make a paste or powder of food to be tested (ii), then take small quantity of the food item in a test tube, add 10 drops of water to it and shake it (i). After that add 2 drops of copper sulphate solution to it (iv), and finally add 10 drops of caustic soda solution to the test tube and shake well (iii). Let the test tube stand for a few minutes and observe the colour of the solution in the test tube. Appearance of violet colour indicates the presence of proteins in the given food item.

ScienceClass 6CBSE

Read the following statements about diseases. (i) They are caused by germs. (ii) They are caused due to lack of nutrients in our diet. (iii) They can be passed on to another person through contact. (iv) They can be prevented by taking a balanced diet. Which pair of statements best describe a deficiency disease? (a) (i) and (ii) (b) (ii) and (iii) (c) (ii) and (iv) (i) and (iii)

Solution: (c): They are caused due to lack of nutrients in our diet. And they can be prevented by taking a balanced diet. Deficiency diseases are the diseases which are caused by deficiency of nutrients in the diet. These are non infectious and do not spread from one to another person.

ScienceClass 6CBSE

Read the food items given below. (i) Wheat (ii) Ghee (iii) Iodized salt (iv) Spinach (palak) Which of the above food items are “energy giving foods”? (a) (i) and (iv) (b) (ii) and (iv) (c) (i) and (ii) (iii) and (iv)

Solution: (c): Wheat and Ghee. Fats and carbohydrates are energy giving foods hence ghee is rich in fats whereas wheat is rich in carbohydrates. So, these are energy giving foods. Iodized salt and spinach are protective foods because iodized salt contain minerals and spinach is rich in both minerals and vitamins.

ScienceClass 6CBSE

Which of the following nutrients is not present in milk? (a) Protein (b) Vitamin C (c) Calcium Vitamin D

Solution: (b): Vitamin C Vitamin C is present in negligible amount in milk whereas protein, calcium and vitamin D are present in considerable amounts in milk.

ScienceClass 6CBSE

1. Which of the following sources of protein is different from others? (a) Peas (b) Gram (c) Soya beans Cottage cheese (paneer)

Solution: (d): Cottage cheese (paneer) Cottage cheese (paneer) is the source of animal protein whereas peas, gram and soya beans are the sources of plant proteins.

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