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WorksheetsFOOD SPOILAGE ,WASTE & fOOD CONSERVATION
Total questions: 68
Worksheet time: 38mins
Food can be spoil. How can you determine the food was spoiled?
when the food was in the garbage bin
Have bad smell ,the color and the texture changed
have dark color and moist
when the food stored in the fridge more than 1 week.
Which one factor can you see on the spoiled bread?
mold on the surface of the bread
sour taste
the color turned to greenish
smell like fish
Why does food spoiled?
It past its expire date
The food made from organic matter
The food eaten by ant
The growth od microorganism on the food
The picture showed a spoiled bread. What type of microorganism cause the bread to spoiled?
Bacteria
Virus
Protozoa
Fungi
How can you determine a glass of milk spoiled or not?
(can be more than one answer)
bad smell
sour taste
change of texture
molded
Which microorganism can make the milk spoil?
Fungi
Protozoa
Bacteria
Virus
Microorganism can growth in suitable condition such as...
(can be more than one answer)
warm
flown air
moist
suitable acidic
Why did some of food in the fridge delayed its food spoilage?
There air no air in the fridge
Microorganism can live in cold temperature
The temperature is not suitable for microorganism growth
Microorganism will die in the fridge
Ramli bought a fried rice and decided to have the meal on the next day. He put the food on the table. On the next day, the food was smelly and the rice's texture changed. Give an inference based on the observation on the food.
Ramli did not put the food in the fridge
The microorganism growth and reproduce on the food
The food was not cooked well
The food is not healthy
How can we prevent food wasting?
We should buy more fast-food, we don't have to prepare it at home.
We can eat more spicy food, it is so delicious!
We mustn't throw away food which can be reused.
We should eat in restaurants, so not to throw away food at home.
Who should care about food waste?
Only mother because she cooks dinners.
Only father because he goes for shopping.
Only kids because they eat the least among of all.
Everyone should be aware of food wasting because it's our common responsibility.
In what ways we can waste less food?
We should buy food, which we don't like eating e.g. broccoli.
We should drink more water instead of eating meals.
We should think wisely before meal if we are really capable for eating it.
We should buy a bigger fridge.
What can we do with leftovers after lunch?
We can reuse them in another dish.
We can put it to cupboard for another few days until we want to eat it again.
We can give them to kids to play with and have fun.
We should throw them away because everyone is full after meal.
Which way of using leftovers is not correct?
Store food properly in your fridge.
Feed your pet animals with leftovers e.g. cats, dogs.
Throw away your leftovers bacause you bought too much food.
Take as much as you want but eat as much as you can only.
What you shouldn't do while shopping?
Check what you have at home before you shop.
You must buy a lot of products on special sales only.
Make a list of products you want to buy to prevent from buying unneeded things.
Check the expiry dates on products which you want to buy.
What kind of food do we waste the most?
Fruit, vegetables
Sweets
Dairy products
Herbs and spices
Pasteurization is important when:
main spoilage microbes are not very heat resistant
water used should not be contaminated with spoilage and pathogenic organisms.
introducing as few spoilage organisms as possible.
Low temperature reduces the
activity of microorganisms by reducing the chemical reaction and action of enzymes.
cheapest form of radiation for food preservation.
concentrations of an antibiotic, thus resistant strains finally develop.
hazard is reported and possible control measures are identified.
Where does most food go to waste?
During transportation
On farms
In supermarkets
at home
What is not a commonly wasted food?
Bread
Milk
Bananas
Frozen Food
What does the ‘best before’ date label mean?
You must throw the food out after the date
You must eat the food on that date
It's illegal to eat the food after that date
The food is safe to eat after its best before date but may not be at its best
What percentage of fruit, vegetables and tubers are thrown out each year?
35%
45%
27%
90%
How does dehydration work to preserve food?
Provides an acidic environment.
Removes oxygen exposure.
Removes water content.
Removes water content by freezing water particles.
Which food preservation technique works by heating and sealing food in an airtight container?
Vacuum Sealing.
Dehydrating.
Canning.
Sun-Drying.
How does freezing work to preserve food?
Provides an acidic environment.
Removes oxygen exposure.
Removes water content.
Removes water content by freezing water particles.
How does adding sugar work to preserve food?
Water content is decreased.
Removes oxygen exposure.
Provides an acidic environment.
Freezes the water content in food.
Which food preservation technique works by reducing oxygen exposure to food?
Vacuum Sealing.
Dehydrating.
Sun-Drying.
Freezing.
Which food preservation technique works by providing an acidic environment?
Adding Sugar.
Sun-Drying.
Adding Lactic Acid.
Pickling.
What food preservation technique has been used here?
Pickling.
Adding Salt.
Adding Lactic Acid.
Adding Sugar.
What food preservation technique has been used here?
Freezing.
Sun-Drying.
Dehydrating.
Vacuum Sealing.
What food preservation technique has been used here?
Pickling.
Adding Sugar.
Freezing.
Dehydrating.
What food preservation technique has been used here?
Adding Sugar.
Freezing.
Dehydrating.
Vacuum Sealing.
What food preservation technique has been used here?
Freezing.
Dehydrating.
Adding Sugar.
Vacuum Sealing.
Select a food preservative from the following
Sodium Benzoate
Streptomycin
Chloromycetin
All the above
Process of preservation of milk
Fermentation
Pasteurisation
Salting
Dehydration
The removal of water from a substance is called
Fermentation
Dehydration
Fermentation
Salting
Vacuum packing is
air free packing
water free packing
Both of these
None of the above
Amlas, Tamarind, Raw mangoes are preserved by
Salting
Chemical method
Canning
Freezing
Freezing is a food preservation method because
Low temperature retards the growth of microbes.
Low temperature removes water content
Both of the above
None of these
Jams, jellies and squashes are examples of
Preservation by Sugar
Preservation by Canning
Preservation by dehydration
Preservation by vinegar
Which of the following is commonly used preservatives for fruits and vegetables in the form of pickles.
Mustard Oil
Vinegar
Coconut oil
Both mustard oil and vinegar
Most microbes cannot grow and multiply when the
conditions are dry
temperature is low
temperature is very high
All the above
How does dehydration work to preserve food?
Provides an acidic environment.
Removes oxygen exposure.
Removes water content.
Removes water content by freezing water particles.
Which of the following are not examples of food preservation techniques.
Adding Sugar, Dehydrating & Pickling.
Freezing, Adding Lactic Acid & Dehydrating.
Adding Salt, Canning & Vacuum Sealing.
Baking, Frying & Boiling.
Food that can be stored for a long time
Milk
Meat
Bread
Pulses
Eating spoiled food causes
Malaria
Food poisoning
Typhoid
_____ is a chemical preservative
Sodium bicarbonate
Carbon dioxide
Calcium Carbonate
Sodium meta bisulpate
Fruits do not go bad when they kept
by drying in the sun
boiled
using salt
In refrigerator
Salt and sugar remove ____ from food
Germs
Bacteria
Water
Fungus
Bacteria grow well at room temperature in the presence of _____
Moister
Heat
Cold
Light
Not a food preservative
Vinegar
Butter
Sugar
Mustard oil
Food is precious. So we _____
take much more food than you can possibly eat
cook more food than the family need
store cereals in moistened area
store the leftover food in a cool or dry place for later use
What does it mean to preserve food?
To make food last longer
To not waste food
To stop the growth of bacteria
All of these
Which of the following is not an indication that food is spoilt ?
Color
Odor
Taste
Mass
When food decomposes it
means you can eat it
means food can safely be eaten in a month's time
means food breaks down and rots
means that nothing changes
Food spoilage is due to...
Micro-organisms and toxin produced
Microorganisms and excess production
Enzymes an excess production
All the above
Preservation of food means :
To keep food safe
To retain quality of food
To prevent decomposition of food
All the above
The main reason for preserving food is to :
Improve its colour and taste
Increase its shelf life
Make costly food available
Change its texture
What does it mean to preserve food?
To make food last longer
To not waste food
To stop the growth of bacteria
All of these
Pickles are cucumbers soaked in vinegar, salt, and spices mixture.
True
False
What method of food preserving deprives microorganisms of moisture?
canning
pickling
drying
freezing
How does freezing foods affect bacterial growth?
Kills bacteria
Allows bacteria to grow rapidly
Stops or slows down bacteria
What method of food preservation is used in the picture?
Salting
Drying
Freezing
Pickling
It is the process of prolonging the shelf life of a raw product by means of drying, freezing, salting and etc.
Food management
Food processing
Food preservation
Food nutrition
Which of the following statements are correct about spoilt food?
Tastes sour
Bad smell
Changes in colour
Safe to eat
What is the condition for the growth microorganisms that is controlled through waxing?
Temperature
Water
Air
Acidity
Which of the following food will spoil first?
A fish that is dried under the sun
A meat that is smoked near the fire
An egg that is soaked in water
A glass of milk that is kept cooled in a refrigerator
A piece of cake is stored in a cupboard. After a week, green spots can be seen on the cake. Which of the following are the cause of the situation?
Dry and warm air
Humid and warm air
Cold and dry air
Cold and humid air
