Chhattisgarh State Class 8 Science Chapter 15 Solution

Chhattisgarh State Board Class 8 Science Chapter 15 How Much Food, What Type of Food Exercise Multiple Choice, Fill in the Blanks, Questions and Answers here.

1.) When you bring some fried food items as sev, bhajiya or samosa wrapped in a paper, you find the paper has become transparent .why does it happen?

Ans- the wrapped paper become more oily and it absorbs all oil from those food items and therefore the paper become transparent.

2.) What will happen if a person does not get a balanced diet?

Ans-if a person do not get balanced diet person become weak, loss their weight, and have many diseases.

3.) Which food items have vitamin A,B, and C in item? And what are the diseases caused due to their deficiency?

Ans-vitamin A- present in milk, eggsm yolk, green vegetables, tamato and carrots .

Deficiency caused – night blindness

Vitamin B- present in grains, mutton, milk, curd, egg etc.

Deficiency caused- anemia, beri-beri diseases.

Vitamin C- present in gooseberry, orange, lemon and such fruits.

Deficiency caused- scurvy disease.

4.) Correct the wrong statements and write it in your own words.

a) Fibers are harmful for humans because it hinders the digestive process.

Ans- incorrect, fibers are not harmful to our bodies.

b) Costly food items are more nutritious than others.

Ans- incorrect, it is not necessary costly food items are more nutritious than others.

c) Potatoes have much proteins in them.

Ans- correct

d) A balanced diet must have only one nutrient in them

Incorrect, balanced diet have all types of nutrient in them.

e) Each food item has only nutrient in them.

Ans- incorrect, each food items not only has nutrients but also have proteins, carbohydrates, fats ,lipids and nutrients.

f) Our body needs vitamins and minerals in large quantities and carbohydrates, proteins and fat only in small quantities.

Ans- incorrect, our body needs balanced diet which include a proper amount of carbohydrates, vitamins, fats and proteins

5.) Green vegetables ,onions and chillies are preserved by dying .make a list of other food items which are preserved by drying.

Ans-there are various food items which are preserved by drying for examples-

Meat, fish , Jams ,Fruits like apples, bananas, carrots, green peas, potatoes, tomatoes, strawberries ,etc different types of fruits, vegetables we can store by drying method.

6.) Make a list of food items which are preserved in salt in your and your neighbour’s houses.

Ans-fish ,meat can stored by salting methods.

7.) Which insecticides is used on grains and vegetables safeguard against insects in your area? In the same way what is added to the grain in your house to preserve it.

Ans-there are some insecticides are used for grain protection. Usually DOT or BHC is used against insecticides . Form protecting grain in house we can use Neem leaves . Neem leaves are mixed with grains they protect grains from insects.

8.) It is observed that many people do not take balanced diet .what could be the possible reasons for it? What will you advice them to do?

Ans-the food which have carbohydrate ,proteins ,fats, vitamins, and minerals in sufficient amount is called a balanced diet.

There are some peoples who do not take a proper diet , because some time they don’t get this food for eating or some time they don’t like some food items from which we can get those nutrients. Therefore when we don’t eat proper food we feel uneasy, weak, and our immune system become weak . our diet affects on our body so we have to take proper diet and take care of our self.

9.) Clean, clear water is always safe for drinking . write your comments.

Ans-clean , clear water is not always safe for drinking there are some microorganisms are present in them so we have to take care about this also but we always drink clean and clear water because water is very necessary for us . contaminated water spread many disease so we have to take care about our self and drink safe and clean water.

10.) What are the various methods adopted to make water potable?

Ans- there are some methods for make water potable . potable water means which is safe for drinking. For make water safe followings methods are used-

a) Candle type filter, which filters and removes impurities are used our household. This is the most popular physical method for making water potable

b) Many times household uses boiling method for making water potable.

c) Chlorination is one of the chemical method which uses for purifying water.

Updated: February 6, 2021 — 2:07 pm

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