RBSE Solutions for Class 5 Environmental Studies Chapter 15 Eat When You Need

RBSE Solutions for Class 5 Environmental Studies Chapter 15 Eat When You Need

Rajasthan Board RBSE Class 5 Environmental Studies Chapter 15 Eat When You Need

Text Book Questions

Think and answer the following (Page No. 84)

Question 1.
How must have the mother come to know that dal has spoiled?
Answer:
Mother has come to know that dal has spoiled from the smell and taste of the food.

Question 2.
Some other food items were also there (Page No. 84), why only the dal has spoiled?
Answer:
The quantity of water in dal was more,That is why the dal has spoiled due to summer.

Question 3.
Why is a potato vegetable is not spoiled?
Answer:
Potato vegetable is cooked by frying it in oil and it is almost dry, no water content is there.

Question 4.
Had they eaten the potato vegetable after two days, would it have been edible then?
Answer:
No, it would not have been edible by then.

Question 5.
Which food items will not be spoiled even after 2-3 days (Puri, pickle, marmalade or potato vegetable)?
Answer:
Pickle and marmalade will not be spoiled even after 2-3 days.

Explore and write the answers for the following (Page No. 85)

If they are not preserved, then

Question 1.
Food items that spoil after 2-3 days.
Answer:
Vegetables (sabji), dal, milk and roti etc.

Question 2.
Food items that spoil in 3-4 days.
Answer:
Bread, paratha, dry potato vegetable, dahi etc.

Question 3.
Food items that spoil in a month.
Answer:
Laddoo of gram flour, namkeen, sauce etc.

Question 4.
Food items that do not spoil even in a year. .
Answer:
Pickle, papad, marmalade, wheat, rice etc.

Points for discussion (Page No. 85)

Question 1.
How do we maintain cleanliness and food hygiene by cooking at home?
Answer:
Steps for maintaining cleanliness by cooking at home :

• We should wash our hands before eating.
• We should wrash vegetable and fruits before eating.
• Cleanliness of the surrounding area of the kitchen
• Water should be clean and pure which is used to prepare food.
• We should use clean utensils
• We should store the food in covered containers

Explore and answer the following (Page No. 85)

Question 1.
What is the level of cleanliness and hygiene at those places where the vendors of hotels, carts and hawkers cook food? Analyse the points.
(i) Washing vegetables
(ii) Cleanliness of the kitchen area
(iii) Washing hands
(iv) Using pure water
(v) Cleanliness of utensils
(vi) Food stored in covered containers
Answer:

Points for discussion (Page No. 85)

Question 1.
Are the food products available in the market, nutritious or not?
Answer:
No, there is no nutrition value in the market food products. Vegetables, chapatti and boiled food of home are more nutritious.

Think and write the answer of the following (Page No. 86)

Question 1.
You must have visited any marriage, party, religious function etc. Many times why there is wastage of food at these collective occasions?
Answer:
In the marriage party or religious functions, people take much more food than they can eat. Secondly, if less number of people attends the function, food is not liked or there is much more variety of food available, excess food goes waste.

Question 2.
What measures can be taken to prevent the wastage of food?
Answer:
We should take only that much quantity of food in our dish we want to eat. Also, food should be taken in a proper way by sitting. Ultimately, this will help in saving the grains and cereals of our country.

Question 3.
If the place is not cleared properly, after the ceremony the people in the nearby area will face what type of difficulties?
Answer:
If the place is not cleared properly, after the ceremony, it will make bad odour and spread diseases in the surrounding area.

Question 4.
Observe during the interval in your school that who eats his food completely and • who leaves the leftover? Where is the waste food thrown and who consumes that food?
Answer:
In the interval, Ravi, Akash and Hemant have finished their food. But Abhishek, Rohit left their food uneaten. Ultimately, this waste food is eaten by stray animals.

Question 5.
What type of environment is seen at the place where the leftover food is disposed?
Answer:
The place where leftover food is disposed has a very dirty and polluted environment and filled with flies, mosquitoes and other animals.

Explore and answer the following (Page No. 87)

Question 1.
Write the method of preservation of the food materials given below :
Answer:

Discuss and write the answers of the following (Page No. 87-88)

Question 1.
Which unseasonal fruits and vegetables are available in your village and cities?
Answer:
Apple, carrot, cherry, lady finger, cluster beans, onion, pudina etc. are the unseasonal foods and vegetables which are available in our city.

Question 2.
What is the reason that carrot, peas, tomatoes and potatoes are available throughout the year?
Answer:
Carrot, peas, tomatoes, potatoes etc. can be preserv ed for a long time by chemical reagents in cold storages.

Question 3.
For how long,, the food items generally found at home can be preserved? What are the methods of their preservation?
Answer:
The food items generally found at home can be preserved for one year. Oil, sugar, salt, citric acid etc. are used for their preservation.

Learnt, understand and now tell (Page No. 88)

Question 1.
Write the names of 3 things required for .the preservation of food materials.
Answer:
Sugar, salt, citric acid.

Question 2.
Which substances are used to preserve a lemon pickle?
Answer:
Salt and sugar.

Question 3.
What measures will you take to avoid the wastage of food?
Answer:
We should take only that much quantity of food in our dish we want to eat. Also, food should be taken in a proper way by sitting. Ultimately, this will help in saving of the grains and cereals of our country.

Other Important Questions

Objective Type Questions :

Question 1.
Where is Harpreet and Rajee going to meet their grandfather?
(a) Udaipur
(b) Jaipur
(c) Pali
(d) Jaisalmer
Answer:
(b) Jaipur

Question 2.
Which food items were spoiled during their journey?
(a) Dal
(b) Potato vegetable
(c) Pickle
(d) Marmalade
Answer:
(a) Dal

Question 3.
Where are the fruits stored to prevent them from early ripe?
(a) In the room
(b) In the farms
(c) In the garden
(d) In cold storage
Answer:
(d) In cold storage

Question 4.
Which of the following food items are not spoiled for a long time?
(a) Green vegetables
(b) Cooked Dal
(c) Pickle
(d) Milk
Answer:
(c) Pickle

Fill in the blanks :

1. In the ……… holidays,harpreet and rajee went to jaipur to meet their grandparents.(Summer/Winter)
2. They started their train journey at ………… inthe morning. (7 / 6)
3. There is a growth of ………. in food, due to moisture, air and temperature. (micro-organisms / fungi)
4. Wastage food are eaten by …….. (human beings/animals)

Answer:

1. summer
2. 6
3. micro-organisms
4. animals

State True or False :

Question 1.
Use of some chemical reagents can save and preserve food for a long time.
Answer:
True

Question 2.
We should misuse or spoil our food.
Answer:
False

Question 3.
Micro-organisms are created in waste and spoiled food.
Answer:
True

Question 4.
The food products available in the market are nutritious.
Answer:
False

Very Short Answer Type Questions :

Question 1.
Who is responsible for food spoil?
Answer:
Micro-organisms.

Question 2.
Canned or sealed food does not spoil. Why?
Answer:
Because it is vacuum packed.

Question 3.
Which machine is used for getting cool and fresh food?
Answer:
Refrigerator.

Question 4.
What is the method of preservation of potato chips?
Answer:
Diving in sunlight.

Question 5.
What is the reason for the spoilage of fruits and vegetables for a long time?
Answer:
Due to the formation of micro-organisms.

Question 6.
Which substances are used to preserve pickles?
Answer:
Salt, oil and citric acid.

Question 7.
What did they eat in dinner?
Answer:
They ate vegetables, kair-sangri, kadai rice, lady finger vegetable, chapatti, salad etc.

Question 8.
What causes the bacteria to become active?
Answer:
Due to high temperature.

Question 9.
What is the method of preservation of sauce?
Answer:
By reagents.

Question 10.
What were the hawkers selling in the train?
Answer:
Aloo bada and namkeen.

Short Answer Type Questions :

Question 1.
Write the names of the preser¬vatives (for preserving the things for a long time) against the following things :
(Model Paper)

Answer:
(1) Drying in sunlight and storing in the refrigerator.
(2) Drying in sunlight, store in the refrigerator, making morabba.
(3) In the form of pickles with oil.
(4) Drying in sunlight and storing in the refrigerator.
(5) In the form of chips after drying in sunlight, saved by chemical reagents.

Question 2.
Write the names of the preser¬vatives (for preserving the things for a long time) against the following things.

Answer:

1. By chemical reagents
2. By using oil for making pickle
3. By making of pickle and morabba
4. By making pickle
5. By making of pickle and morabba

Question 3.
For how long the food items generally found at home, can be preserved?

Answer:

1. 1-2 days
2. 3-4 days
3. 1 month
4. 1 year
5. 2 years

Question 4.
How are crops grown in fields and are preserved?
Answer:
The crops in the field are dried, cleaned, pesticides used and packed in jute bags or packets and stored in warehouse.

Question 5.
Which food items are generally preserved in your home for a long time?
Answer:
Preservation of food items for a long time:

• Lemon, chilli, amla and mango pickle
• Moongori, papad etc.
• Tomato sauce
• Papdi, Mathri, Khakra

Question 6.
What kind of food is not suitable for meals?
Answer:
There is a growth of micro-organisms in food, due to moisture, air and temperature. As a result, there is a change in its smell and taste. Such types of food spoils and is no more edible.

Question 7.
What should be kept in mind about meals?
Answer:

• We should always take fresh food.
• We should maintain cleanliness and food hygiene while cooking food.
• We should not eat outside food
• Food should not be wasted. Food should be taken as much as needed in the dish.
• If there is a refrigerator, then, we should store the food in it.

Question 8.
Name some fruits and vegetables which were not available previously, but are found in present time.
Answer:
Capsicum, sindoori carrot, baby com, American com, beAnswer:

Question 9.
Which fruits and vegetables are not grown in your area, but are available in the market?
Answer:
Apple, chikoo, kewi, litchi, grapes, green ground nuts, strawberry, mushroom are not grown in our area, but are available in the market.

Question 10.
What are the food items bought in packets in your home? Name 6 of them.
Answer:

• Potato chips
• Milk
• Water
• Noodles
• Pasta
• Kurkure etc.

Essay Type Questions :

Question 1.
Have you seen food spoilage in your house? How do we know what time the food gets spoiled?
Answer:
Yes, we have seen food spoiling in our home.
Spoiled food gives bad odour. Micro-organisms grow in the food which changes the taste and the smell of that food. Chapatti, cooked dal, cooked vegetables, milk etc. spoils in 2-3 hours to 1-2 days.

Question 2.
Write the methods of preservation of food items.
Answer:
To protect the food from getting spoiled and store it for a long time, we adopt many methods such as

• To make a marmalade (morabba) by mixing sugar, make a thick syrup (sharbat)
• Make a pickle by adding salt, vinegar and cal
• Preserve the food items like lady finger, cluster beans (guarfali), fenugreek, mint, potato chips etc. by drying them in sunlight.
• The canned or sealed food stuffs are not spoiled because they are vacuum packed
• Use of some chemical reagents for preserving the food stuffs for a long time
• In refrigerator also, the food items remain fresh for some time only.