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Class 6 - Science

Components of Food

Q&A
Question:

Tick (/) the statements that are correct, cross (X) those which dire incorrect.
(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:

ncert-solutions-for-class-6th-science-chapter-2-components-of-food--4



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Questions and Answers


Components of Food - Questions
1.

How can you test presence of proteins in a given food item?


Answer
2.

What is roughage?


Answer
3.

What are the functions of minerals?


Answer
4.

Name the food nutrient indicated by an oily patch on paper.


Answer
5.

Name two energy-providing nutrients.


Answer
6.

Name some food items which provide roughage.


Answer
7.

Name the major nutrients in our food.


Answer
8.

Name a vitamin which represents a group of vitamins


Answer
9.

What are the functions of carbohydrates?


Answer
10.

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


Answer
11.

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
12.

Name two sources of proteins provided by animals.


Answer
13.

Write two sources of Vitamin B.


Answer
14.

What are carbohydrates?


Answer
15.

Name two plant food items which provide proteins.


Answer
16.

Write two sources of Vitamin D.


Answer
17.

Name a vitamin that is not present in milk.


Answer
18.

What is obesity?


Answer
19.

Write test for detecting, presence of fat.


Answer
20.

Name two sources of Vitamin A.


Answer
21.

If any food item gives blue-black colour with iodine then which nutrient is present in the food?


Answer
22.

What is roughage?


Answer
23.

Write test for detecting the presence of starch.


Answer
24.

Name the vitamin that our body prepares in the presence of sunlight.


Answer
25.

Name various types of vitamins.


Answer
26.

What are nutrients? Name major nutrients.


Answer
27.

Name a nutrient which helps in repairing the damaged body cells.


Answer
28.

Name two food items which provide fats.


Answer
29.

What is a balanced diet? Write the components of balanced diet.


Answer
30.

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
31.

What are vitamins? Write various kinds of vitamins.


Answer
32.

Excess intake of fats is harmful for the body because it causes obesity. Would it be harmful for the body to take too much of proteins or vitamins in the diet?


Answer
33.

Why should a meal have different food items?


Answer
34.

What is the main Function of roughage?


Answer
35.

A patient had stunted growth, swelling on face, discolouration of hair and skin disease. Doctor advised him to eat a lot of pulses, grams, egg white, milk etc. What is wrong with the patient? Explain.


Answer
36.

Name two nutrients which protect the body from diseases.


Answer
37.

Write the functions of water in our body.


Answer
38.

Tick (/) the statements that are correct, cross (X) those which dire incorrect.
(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
39.

Do all foods contain all the required nutrients?


Answer
40.

List various types of nutrients and write the functions of each.


Answer
41.

Name two main types of carbohydrates found in our food.


Answer
42.

Do all meals consist of the same food items?


Answer
43.

What are the functions of proteins?


Answer
44.

Write two sources of Vitamin C.


Answer
45.

Which type of food is called body-building food?


Answer
46.

A small child became very thin and lean and later he became so weak that he could not move. Which nutrients should he eat so as to improve his health?


Answer
47.

Name two substances which provide carbohydrates.


Answer
48.

What are deficiency diseases?


Answer
49.

What are fats? Name some fat-containing substances.


Answer
50.

What happens when two or more drops of iodine solution fall on starch substance?


Answer
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  • Simple Science

    Windlass Cogwheels Application

    Man's Way of Helping Himself:
    Windlass, Cogwheels. In the old-fashioned windlass used in farming districts, the large wheel is replaced by a handle which, when turned, describes a circle. Such an arrangement is equivalent to wheel and axle; the capstan used on shipboard for raising the anchor has the same principle. The kitchen coffee grinder and the meat chopper are other familiar illustrations.

    Cogwheels are modifications of the wheel and axle. Teeth cut in A fit into similar teeth cut in B, and hence rotation of A causes rotation of B. Several revolutions of the smaller wheel, however, are necessary in order to turn the larger wheel through one complete revolution; if the radius of A is one half that of B, two revolutions of A will correspond to one of B; if the radius of A is one third that of B, three revolutions of A will correspond to one of B.

    Experiment demonstrates that a weight W attached to a cogwheel of radius 3 can be raised by a force P, equal to one third of W applied to a cogwheel of radius 1. There is thus a great increase in force. But the speed with which W is raised is only one third the speed with which the small wheel rotates, or increase in power has been at the decrease of speed.

    This is a very common method for raising heavy weights by small force.

    Cogwheels can be made to give speed at the decrease of force. A heavy weight W attached to B will in its slow fall cause rapid rotation of A, and hence rapid rise of P. It is true that P, the load raised, will be less than W, the force exerted, but if speed is our aim, this machine serves our purpose admirably.

    An extremely important form of wheel and axle is that in which the two wheels are connected by belts as in Figure. Rotation of W induces rotation of w, and a small force at W is able to overcome a large force at w. An advantage of the belt connection is that power at one place can be transmitted over a considerable distance and utilized in another place.

    FIG. - Cogwheels.

    FIG. - By means of a belt, motion can be transferred from place to place.


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