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Questions Related to evs

Food contaminated with food poisoning bacteria would

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. Smell

  2. Change colour

  3. Look normal

  4. Be slimy and bitter

Show answer
Correct Option: C
Explanation:

The food containing food poisoning bacteria does not change colour, taste, and smell of the food hence it cannot be recognized by the senses and the food looks normal

So, the correct answer is 'Look normal'

Which one of these statements about bacteria is true?

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. All types of bacteria give food poisoning.

  2. Freezing makes food last longer by killing bacteria.

  3. Bacteria grow fastest when they are warm.

  4. All bacteria need air to survive.

Show answer
Correct Option: C
Explanation:
 At 37°C bacteria start growing but start multiply between 5°C and 63°C.
 at room temperature, if the food is left out for any more than two hours. bacterial growth will be rapid. all types of bacteria won't give food poisoning.
Freezing does not kill bacteria only their growth stops. 
Some bacteria can survive even without air like in food gravy and sauces.
So, the correct answer is 'Bacteria grow fastest when they are warm'

Food poisoning only occurs because of bad practice in

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. Restaurants

  2. Retail shops

  3. Home or domestic kitchens

  4. All of the above

Show answer
Correct Option: D
Explanation:

the correct answer is 'all of the above'

food poisoning occurs due to bad food handling at all the places where it is prepared or stored like restaurants,retail shops, home or domestic kitchens etc. It occurs due to contamination of food with toxin of E.coli or C.botulinum.

The disease caused due to the presence of large number of microorganisms in the food is called as 

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. Food poisoning

  2. Food preservation

  3. Typhoid

  4. Chlolera

Show answer
Correct Option: A
Explanation:

The disease caused due to the presence of a large number of micro-organisms in the food or due to the presence of toxic substances in food formed by the action of microorganisms is called as food poisoning.

___________ makes the availability of food materials throughout the years.

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. Storage at Low temperature

  2. Highly active enzymes

  3. Over production

  4. All of the above

Show answer
Correct Option: A
Explanation:

Storing food products at low temperature reduces the enzyme activity. Due to this the food could be stored for longer period of time and making it available throughout the year.

Heating milk at $65^{0}$ followed by sudden cooling is Known as ______________.

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. Sterilization

  2. Preservation

  3. Pasteurization

  4. Fermentation

Show answer
Correct Option: C

The symptoms of food poisoning begin within .......... of eating contaminated food.

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. 10 days

  2. 1-2 days

  3. 15 days

  4. 7 days

Show answer
Correct Option: B
Explanation:

Food poisoning is the infection caused by the ingestion of food contaminated with bacteria or bacterial infection. Symptoms of food poisoning begin within 1 to 2 days of eating contaminated food. The symptoms are vomiting, nausea, severe pain in the abdominal region, diarrhoea and dehydration. It may also cause weakness, fatigue and damage to the nervous system.

Thus, the correct answer is option B.

Food material can be preserved at

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. High temperature

  2. Osmotic pressure

  3. Low temperature

  4. All of the above

Show answer
Correct Option: D
Explanation:

Food material can be preserved at high temperature, that is either by heating or boiling. Usually a process followed for cooked food and milk to prevent it from being spoilt due to microbial action

Using osmosis as a method of preservation - where sugar or salt is added to preserve food, this increases the ionic concentration on the outside, so food material loses water through exosmosis. Removal of water prevents microbial infestation and increases the shelf life of food. Used for preservation of fish, fruits and vegetables
Low temperature or refrigeration - cold storage, for preservation of fish, fruits, vegetables. Increases shelf life of cooked food
So, the correct answer is 'All of the above'

Foodborne botulism can affect

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. Muscular system

  2. Nervous system

  3. Gastrointestinal system

  4. All of the above

Show answer
Correct Option: B
Explanation:

Botulism is a serious foodborne disease caused by the neurotoxin leads to the paralysis and even death, produced by the spore-forming, obligate anaerobic. These produce endospores which can be destroyed by heating at high temperatures. The neurotoxin enters the nerve cells and interferes with the release of acetylcholine. Hence, it affects the nervous system.

Thus, the correct answer is option B.

Who proved that microorganism can be killed by boiling?

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. Pasteur

  2. Spallanzani

  3. Leeuwenhoek

  4. None of the above

Show answer
Correct Option: B
Explanation:

Lazzaro Spallanzani - One of the first to disprove spontaneous generation. An Italian scientist who proved microorganisms could be killed by boiling.

So the answer is 'Spallanzani'.