ClaClass 5 Science Chapter 6 Spoilage and Wastage of Food and Food Preservation Solutions

CHAPTER - 6

Spoilage and Wastage of Food and Food Preservation

EXERCISE

(Question/Answer)

Highlights

(i) Fill in the blanks.

(ii) Write True or False for the following statements.

(iii) Tick the correct option

(iv) Answer the following questions in brief.

(v) Answer the following questions.

Fill in the blanks

( Exercise )

1. Micro-organisms like bacteria and ___________ spoil the food.

2. Insects make their home in _ and _ place.

3. Enzymes can be harmful because they can cause ___________ of fruits and vegetables.

4. Snacks, like biscuits and chips, should be stored in ___________ jars.

5. The growth of micro-organisms slows down at ___________ temperatures.

Answer

(1) fungi

(2) moist, dark

(3) spoilage

(4) air tight

(5) low.

Write True or False for the following statements.

( Exercise )

1. Growth of bread moulds, on bread, indicates that it has got spoiled.

2. Vinegar is used as a preservative.

3. It is safe to drink unpastuerised milk
4. We can eat more than the required quantity
5 We may eat spoiled food rather than wasting

Answers

(1) True

(2) True

(3) False

(4) False

(5) False.

Tick the correct option.

( Exercise )

1. A natural insect repellant, found in our kitchens, is-

2. Dry foods, like cereals and nuts, are preserved by-

3. Fruits and vegetables get ripened due to the action of-
4. The least perishable food item, from the following, is-
5. The chances of spoilage of food can be reduced by keeping the food-

Answer

(i) turmeric powder

(ii) vacuum packing

(iii) enzymes

(iv) biscuits

(v) at low temperatures

Answer the following questions in brief.

( Exercise )

1. State two factors that contribute to the fast growth of micro-organisms.

Answer: Moisture and temperature are the two factors that contribute to the fast growth of micro-organisms.

2. What is likely to happen to curd if it is not stored in the refrigerator?

Answer: If curd is not stored in refrigerator, it will get spoiled quickly.

3. What do you understand by food, preservation?

Answer: The process of treating, or handling, food to stop, or slow down, its spoilage or decay.

4. How can we protect our food from insects, worms and rats?

Answer: We can protect our food from insects, worms and rats by keeping the kitchen shelves and container clean and dry.

…………………………………………………….

5. Why does food stay fresh for a longer time when stored in a refrigerator?

Answer: When food is kept in refrigerator, it lowers the temperature. Low-temperature prevents the growth of microorganisms. Thus, food stays fresh for a longer time.

Answer the following questions.

( Exercise )

1. Give any three reasons for spoilage of food.

Answer: Following are the three reasons for spoilage of food:

Micro-organisms
Enzymes
Insects, worms and rats

2. How is food preservation useful to us?

Answer: Food preservation is useful to us in the following ways:

It helps to maintain nutritive value of food.
It increases the shelf life of food, thus, increasing its supply.
It makes seasonal fruits available throughout the year.
It decreases wastage of food by preventing decay or spoilage of food.
It helps in adding variety to the diet.

3. Why is it important to check the manufacturing and the expiry date of packaged food items before consuming them?

Answer: It is necessary to check the manufacturing and the expiry date of packaged food items because if the food reaches its expiry, it develops toxins which may result in food poisoning.

4 Explain the following methods of food preservation:

Answer: The teacher has advised so because chicke

(a) Dehydration

Answer: It is the process in which water content of the food stuff is removed. Many vegetables like onions and cauliflower are dried to preserve them.

(b) Canning and Bottling

Answer: It is the process of preserving food like fruit jams and pickles by packing them into glass jars or tin cans and then heating the jars to kill the microorganisms that would create spoilage.

(c) Pasteurisation

Answer: The process of heating food followed by immediate cooling, to limit the growth of microorganisms. The temperature used during pasteurization is 100 degrees Celsius.

5. Rakesh bought two raw papayas. He kept one papaya in the refrigerator and other papaya on the kitchen shelf. Which will ripen first and why?

Answer: The papaya which will be kept on the kitchen shelf will ripen first as enzymes present in fruit are more active at room temperature rather than in the refrigerator.

CHAPTER - 6

Spoilage and Wastage of Food and Food Preservation

EXERCISE

(Question/Answer)

Highlights

(i) Fill in the blanks.

(ii) Write True or False for the following statements.

(iii) Tick the correct option

(iv) Answer the following questions in brief.

(v) Answer the following questions.

Fill in the blanks

( Exercise )

1. Micro-organisms like bacteria and ___________ spoil the food.

2. Insects make their home in ___________ and ___________ place.

3. Enzymes can be harmful because they can cause ___________ of fruits and vegetables.

4. Snacks, like biscuits and chips, should be stored in ___________ jars.

5. The growth of micro-organisms slows down at ___________ temperatures.

Answer

Write True or False for the following statements.

( Exercise )

1. Growth of bread moulds, on bread, indicates that it has got spoiled.

2. Vinegar is used as a preservative.

3. It is safe to drink unpastuerised milk 4. We can eat more than the required quantity 5 We may eat spoiled food rather than wasting

Answers

Tick the correct option.

( Exercise )

1. A natural insect repellant, found in our kitchens, is-

2. Dry foods, like cereals and nuts, are preserved by-

3. Fruits and vegetables get ripened due to the action of- 4. The least perishable food item, from the following, is- 5. The chances of spoilage of food can be reduced by keeping the food-

Answer

Answer the following questions in brief.

( Exercise )

1. State two factors that contribute to the fast growth of micro-organisms.

2. What is likely to happen to curd if it is not stored in the refrigerator?

3. What do you understand by food, preservation?

4. How can we protect our food from insects, worms and rats?

Answer the following questions.

( Exercise )

1. Give any three reasons for spoilage of food.

2. How is food preservation useful to us?

3. Why is it important to check the manufacturing and the expiry date of packaged food items before consuming them?

4 Explain the following methods of food preservation:

5. Rakesh bought two raw papayas. He kept one papaya in the refrigerator and other papaya on the kitchen shelf. Which will ripen first and why?

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2. Insects make their home in _ and _ place.

3. It is safe to drink unpastuerised milk
4. We can eat more than the required quantity
5 We may eat spoiled food rather than wasting

3. Fruits and vegetables get ripened due to the action of-
4. The least perishable food item, from the following, is-
5. The chances of spoilage of food can be reduced by keeping the food-