Tag: food spoilage, adulteration and preservation

Questions Related to food spoilage, adulteration and preservation

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'. 

Vinegar is the best preservative for

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

  1. Meat product

  2. Fruits

  3. Dairy product

  4. Both A and B

Show answer
Correct Option: D

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.

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

  1. Dehydration

  2. Pasteurisation

  3. Boiling

  4. Cooling

Show answer
Correct Option: B

Pasteurization means

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

  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

Show answer
Correct Option: C
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.'

Which one among the following causes food poisoning?

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

  1. Clostridium botulinum

  2. Salmonella typhosa

  3. Clostridium tetani

  4. None of these

Show answer
Correct Option: A
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.'

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

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

  1. Sterilization

  2. Pasteurisation

  3. Nitrification

  4. Freezing

Show answer
Correct Option: B
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.'

Pasteurisation frees food stuffs of

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

  1. All bacteria

  2. All living organisms

  3. Vegetative forms of bacteria

  4. Vegetative forms of all pathogenic bacteria

Show answer
Correct Option: D
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.'