Tag: food spoilage and adulteration

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Questions Related to food spoilage and adulteration

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.
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 used as chemical preservatives ?

  1. Citric acid

  2. Nitric acid

  3. Oxalic acid

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

Citric acid and phosphoric acid are added to carbonated beverages and fruit drinks for both flavoring and preservation. Nitric acid and Oxalic acid are much acidic in nature which can cause harm to the digestion system.

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

Why salts and edible oils are known as preservatives ?

  1. Because they can kill all microbes even the viruses

  2. They checks the growth of microbes

  3. They are tasty

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

Salts and edible oils are the common chemicals generally used to check the growth of microorganisms. Therefore they are called preservatives.

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:
a) Pasteurized milk can be consumed without boiling as it is free from harmful microbes
b) The milk is heated to about $700^{\circ}C$ for $15$ to $30$ seconds and then suddenly chilled and stored
c) Pasteurization prevents the growth of microbes

  1. a, b

  2. b, c

  3. a, c

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

Pasteurized milk can be consumed without boiling as it is free from harmful microbes. The milk is heated to about $700C$ for $15$ to $30$ seconds and then suddenly chilled and stored. By doing so, it prevents the growth of microbes. This process was discovered by Louis Pasteur. So, It is called pasteurization.

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

Purpose of milk pasteurization

  1. Strips bacteria of oxygen

  2. Make the milk tasty for drinking

  3. Destroy microbes

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

Milk is pasteurized to destroy microbes, but many more heat resistant organisms are only reduced in number. Pasteurization kills the harmful microorganisms present in milk..

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

Mark the incorrect statement

  1. Salts and edible oils are the common chemicals generally used to check the growth of viruses.

  2. We add salt or acid preservatives to pickles to prevent the attack of microbes.

  3. Sodium benzoate and sodium metabisulphite are common chemical preservatives.

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

Salts and edible oils are the common chemicals generally used to check the growth of microorganisms. Therefore, they are called  preservatives. We add salt or acid preservatives to pickles to prevent the attack of microbes. Sodium benzoate and sodium metabisulphite are common preservatives. These are also used in the jams and squashes to check their spoilage.