Tag: evs

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Questions Related to evs

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

All living organisms are killed by heat treatment known as_____________

  1. Pasteurisation

  2. Immunity

  3. Sterilisation

  4. Autoimmunity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Sterilisation is a technique to prolong the shelf life of foods. In general the food products are heated to 110 to 135°C for about 15 to 20 minutes. For some canned products they are heated for up to one hour. All micro-organisms are killed during this process. After sterilisation the product is free of germs and, if stored correctly, have a shelf life of several years. Heat-sensitive vitamins are destroyed for the benefit of a long shelf life. Taste and colour of the food are also affected by the heat. Sterilisation is used for foods like meat, poultry, vegetables, fruits and milk. 
Therefore, the correct answer is option C.
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 rot completely and do not smell ?

  1. Left over food

  2. Broken glass

  3. Aluminium wrapper

  4. Polythene bags
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The correct answer is 'leftover food'

For anything to rot completely, the microorganisms present in the environment should be able to breakdown the material by the use of their enzymes. Leftover food is easily degraded by these enzymes whereas broken glass, aluminium wrappers and polythene bags don't rot because these enzymes cannot degrade them(or the enzyme action on these substances is so slow that rotting is insignificant)
So the correct option is A.

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

Mark the statement which is not true for sugar as preservative

  1. Sugar inhibits the growth of bacteria

  2. It protects the food from spoilage

  3. Squashes can't be prepared by sugar

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

Jams, jellies and squashes are preserved by sugar. Sugar reduces moisture content and inhibits the growth of bacteria.

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

Mark the correct statement

  1. Sugar inhibits the growth of bacteria which enhances the activity of enzymes

  2. Sugar inhibits the growth of microbes which inhibits the growth of bacteria that spoil food

  3. Sugar reduces the rate of enzyme activity

  4. Both A and B
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Jams, jellies, squashes are preserved by sugar. Sugar reduces the moisture content which inhibits the growth of bacteria which spoils food.

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

Pasteurized milk can be consumed without boiling why?

  1. As it is free from enzymes

  2. As it is free from microbes

  3. As it is free from preservatives

  4. Both A and B
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pasteurized milk can be consumed without boiling as it free from harmful microbes. The process was discovered by Louis Pasteur.

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

Match the columns

a) Aspergillus 1) Chemical preservative
b) KMS 2) Acetic acid
c) Vinegar 3) Food poisoning
  1. $a-1,b-2,c-3$
  2. $a-2,b-1,c-3$
  3. $a-3,b-1,c-2$
  4. $a-1,b-3,c-2$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Aspergillus causes food poisoning.
  • KMS(Potassium Mera Bisulphate) is a chemical preservative.
  • Acetic acid in the form of vinegar is used in the manufacture of several pickled products.