Tag: evs

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

Which of the following is the reason for the preservation of food by boiling?

  1. High temperature kills the bacteria by denaturing the proteins

  2. It stops the chemical reaction

  3. It changes the colour of the food

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Option A is correct.
At high-temperature bacteria present in the food are killed. Also, it will not affect the quality of minerals present in the food.
But, there must be some temperature, like here more than $ 100^{\circ}c$ is required to kill the bacteria.
So, this method is mainly adopted everywhere. (i.e. Boiling)
Multiple choice evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

High temperature helps in the reduction of __________________.

  1. Food poisoning

  2. Nutritional quality

  3. Food texture

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

High-temperature processing is primarily used to kill harmful bacteria and pathogens, which significantly reduces the risk of food poisoning.

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

............. is the process which is used to make something free from bacteria.

  1. Fermentation

  2. Sterlization

  3. Condensation

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Sterilization is a thermal process generally designed to destroy the stores of the bacterium (C. botulinum). As this microorganism can easily be grown under anaerobic condition producing the deadly toxin that causes botulism. So, it requires heating temperature greater than $ 100^{\circ}C $
Multiple choice evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

When the milk has been pasteurised successfully, the milk will no longer contain the enzyme.

  1. Polymerase

  2. Phosphatase

  3. Peroxidase

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

The phosphatase test is used to verify the effectiveness of pasteurization. Alkaline phosphatase is an enzyme naturally present in raw milk that is destroyed at the same temperatures required to kill pathogens.

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

For pasteurisation milk is__________.

  1. Warmed at $80^o$C for $5$ minutes and cooled slowly
  2. Boiled at $100^o$C and cooled slowly

  3. Treated with citric acid
  4. Warmed at $60^o$C for $20$ minutes and cooled fast
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
(D) Warmed at $ 60^{\circ}C $ for 20 minutes & cooled fast.
$ \rightarrow $ It is a process of heating a liquid to below the Boiling point to destroy microorganisms.
Milk is heated 155 to $ 175^{\circ}$ F i.e.' in Celsius scale about 68.3 to $ 81^{\circ}C $ for an Instant followed by cooling. A standardises milk and cleans extraneous matter from it.
Multiple choice evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

A treatment that keeps milk fresh for several weeks is

  1. Ultraviolet treatment

  2. Ultraheat treatment

  3. Infra-red treatment

  4. Freeze chilling treatment
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

UHT (Ultra High Temperature) treatment involves heating milk to very high temperatures (135-150 degrees Celsius) for a few seconds, which allows it to be stored at room temperature for several weeks or months.

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

Food additive is

  1. Preservative and flavour

  2. Sweetener

  3. Stabilizer

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

Food additives include a wide range of substances added to food to maintain or improve safety, freshness, taste, texture, or appearance, such as preservatives, sweeteners, and stabilizers.