Tag: food spoilage, adulteration and preservation

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Questions Related to food spoilage, adulteration and preservation

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

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

  1. 10 days

  2. 1-2 days

  3. 15 days

  4. 7 days
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

Food material can be preserved at

  1. High temperature

  2. Osmotic pressure

  3. Low temperature

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
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'

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

Foodborne botulism can affect

  1. Muscular system

  2. Nervous system

  3. Gastrointestinal system

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

Who proved that microorganism can be killed by boiling?

  1. Pasteur

  2. Spallanzani

  3. Leeuwenhoek

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
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'. 

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

Milk is heated to $72^0$ C for 30 minutes and then suddenly cooled to $12^0$ C. Microbes are killed without causing damage to the taste and quality of milk. Name this process.

  1. Dehydration

  2. Pasteurisation

  3. Boiling

  4. Cooling
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The process described, heating milk to a specific temperature and then cooling it suddenly to kill microbes while preserving quality, is the definition of pasteurization.

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

Pasteurization means

  1. Vaccination for a baby against small pox
  2. Sterilization in steam cooker at 100$^o$C for 10 minutes
  3. Heating milk or other liquids to 60$^o$C to 70$^o$C for short duration

  4. A technique of curing people bitten by mad dogs
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pasteuriziation is the process of sterilization. In this, packaged and non-packaged milk and other liquids are heated with mild heat, that is 60$^o$C to 70$^o$C for short duration in order to eliminate pathogens and extend shelf-life. The process was first developed by Louis Pasteur in 1864.

Thus, the correct answer is 'Heating milk or other liquids to 60$^o$C to 70$^o$C for short duration.'

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

Which one among the following causes food poisoning?

  1. Clostridium botulinum

  2. Salmonella typhosa

  3. Clostridium tetani

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Food poisoning is caused by Clostridium botulinum. Botulism is a life-threatening bacterial disorder that is caused by Clostridium botulinum. It grows on food and produces neurotoxin, botulinum toxin that causes paralysis. 

Thus, the correct answer is 'Clostridium botulinum.'

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

When milk is heated at $62^o$C for $30$ minutes and then cooled, the process is called

  1. Sterilization

  2. Pasteurisation

  3. Nitrification

  4. Freezing
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pasteurization is the process of sterilization. In this, packaged and non-packaged food items are heated at 62$^o$C for 30 minutes and then cooled. This is done in order to eliminate pathogens and extend the shelf-life of food. This process frees food materials from vegetative forms of all pathogenic bacteria. This method was introduced by Louis Pasteur.

Thus, the correct answer is 'Pasteurization.'

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

Pasteurisation frees food stuffs of

  1. All bacteria

  2. All living organisms

  3. Vegetative forms of bacteria

  4. Vegetative forms of all pathogenic bacteria
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pasteuriziation is the process of sterilization. In this, packaged and non-packaged food stuffs are heated with mild heat, that is 60$^o$C to 70$^o$C for short duration in order to eliminate pathogens and extend shelf-life. This process frees food stuffs of vegetative forms of all pathogenic bacteria. The process was first developed by Louis Pasteur in 1864.

Thus, the correct answer is 'Vegetative forms of all pathogenic bacteria.'