Yarn is woven to get fabric using (a) charkha (b) spinning machines (c) looms (d) knitting needles.
c) Looms Explanation Looms are used to weave the yarn. Looms are of two types -hand operated or power operated. The... View Article
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Which part of the jute plant is used for getting jute fibre? (a) Flower (b) Stem (c) Fruit (d) Leaf
b) Stem Explanation Jute fibre is obtained from the stems of jute plan Chorchorus. The key properties of jute fibres are... View Article
Boojho went to a cloth shop. There he found a fabric which was smooth to touch, had vibrant colour and shine. The fabric could be (a) cotton (b) wool (c) silk (d) jute.
c) Silk Explanation Silk clothes have a smooth and shining texture. It is obtained from cocoon of the silkworm. Silk is a... View Article
Which set of substances is not used for making fibres? (a) Silk, chemicals (b) Yak hair, camel hair (c) Husk, bones (d) Flax, wool
c) Husk, bones Explanation Husk and bones are not used for making fibres. Substances in options (a), (b) and (d) are... View Article
Which of the following is not a natural fibre? (a) Cotton (b) Jute (c) Nylon (d) Flax
c) Nylon Explanation Nylon is synthesised with the help of chemicals in factories whereas jute, flax and cotton are natural fibres... View Article
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) (d) (i) and (iv)
d) i and iv Explanation In ancient times, barks and big leaves of trees or animal skins and furs were used by people... View Article
Which statement out of the following is incorrect? (a) Use of charkha was popularized 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. (d) Sufi saint Kabir was a weaver.
b) In India, Jute is mainly grown in Kerala and Punjab Explanation In India, jute is mainly grown in West Bengal,... View Article
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) Silk saree (d) Nylon scarf
a) Jute bag Explanation Jute is a plant fiber, obtained from the stems of the jute plant Corchorus. It is long,... View Article
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? (c) Suggest some food items that he should include in his diet, (any four)
Boojho is suffering from night blindness. Explanation Night blindness (nyctalopia) is your inability to see well at night or in... View Article
‘Water does not provide nutrients, yet it is an important component of food’. Explain.
Food is essential for the survival of living organisms. It provides us with energy to carry out daily activities and... View Article
‘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.
Vitamins and minerals are two important nutrients that our body must need. A healthy dieted person must include vitamin and... View Article
(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. Carbohydrates It is one of the... View Article
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 a reason for your answer.
Paheli should avoid eating biscuits and other such junk food as they contain maida (refined flour) which has minimum quantity... View Article
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 rich in nutrients like carbohydrates, vitamins, dietary fibre, and minerals. Potato peel provides extra dietary fiber and nutrients... View Article
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?
Iodine solution turned blue-black because the saree worn by Pahelis teacher must have contained starch and starch turns blue-black when... View Article
Tasty food is not always nutritious and nutritious food may not always be tasty to eat. Comment with examples.
Foods like burger, potato chips, pizza are delicious but are not nutritious. These contain a lot of refined flour, oil,... View Article
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_____. (e) The vitamin that gets easily destroyed by heating during cooking is ____.
(a) Egg yolk is rich in fat and egg albumin is rich in protein. (b) Deficiency diseases can be prevented... View Article
Which of the following food items does not provide any nutrient [Milk, Water, Orange juice, Tomato soup]
Water Explanation Water is a precious natural resource. All living things need water for their survival. We cannot imagine life without... View Article
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__________ (f) tfa_______________
(a) protein Proteins are very large molecules composed of basic units called amino acids. In addition to containing carbon, hydrogen,... View Article
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 (d) iv, ii, i, iii
b) ii, i, iv, iii Explanation To test the presence of proteins in a food item, first, make a paste or... View Article
