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

Apples are generally wrapped in waxed paper to

  1. Prevent sunlight for changing its colour
  2. Prevent aerobic respiration by checking the entry of $O _2$

  3. Prevent ethylene formation due to injury

  4. Make the apples look attractive
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Apples are wrapped with waxes after they are harvested to increase their shelf life till they reach the end consumer. The waxing process closes the pores present on the fruit preventing exchange of gases, thus reduced catabolism and senescence.

So, the correct answer is 'Prevent aerobic respiration by checking the entry of  $O _2$

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

Sodium benzoate is used to preserve

  1. Meat

  2. Fish

  3. Dairy product

  4. Fruit cocktail
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sodium benzoate is a common chemical preservative used to inhibit the growth of mold, yeast, and bacteria in acidic foods. It is widely used in fruit-based products like fruit cocktails, juices, and jams.

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

Pasteurisation is?

  1. Heating of liquid at $65^o$C
  2. Heating of liquid between $65^o$ - $80^o$C followed by rapid cooling
  3. Heating of solids at $65^o$C

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

Pasteurization is a process in which milk is heated at high temperatures (65 degree celsius approx) followed by rapid cooling to kill pathogenic bacteria.

Correct answer-B

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 are commonly used as food preservatives?

  1. Boric acid and zinc phosphide

  2. Bleaching powder and chlorine compounds

  3. 2, 4-D and zinc phosphide

  4. Sodium benzoate and sodium metabisulphite
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Food preservatives are chemicals that are used to inhibit microbial growth in food. These chemicals are food additives and increase the shelf life of food. Sodium benzoate and sodium metabisulphite are the common food preservatives used in jams, jellies etc. Thus the correct answer is option D.

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 not paired correctly?

  1. Alexander Fleming - Penicillin

  2. Leeuwenhoek - Microscope

  3. Elic Metchnikoff - Phagocytes

  4. Louis Pasteur - Antiseptic
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Louis Pasteur is regarded as one of the greatest saviors of humanity and was responsible for the discovery of pasteurization. His pasteurization process concluded that all fermentable liquid could be prevented from a spoiling with a special heating treatment.

So, the correct option is 'Louis Pasteur - Antiseptic'.

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

Heating milk at 65$^o$C followed by sudden cooling is known as

  1. Sterilization

  2. Preservation

  3. Pasteurization

  4. Fermentation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pasteurization is a heat treatment process where the milk is heated at 60-70$^0$C for 15 to 30 seconds and suddenly chilled and store. This method is used to kill the bacteria in liquid and foods and inhibits their further growth. It is named for the French scientist, Louis Pasteur, who gave this preservation technique in the 1860s.

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

Pasteurised milk is

  1. Sterile and will not turn sour

  2. Free from pathogenic bacteria

  3. Not free from bacteria

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

Pasteurization is the preservation technique of milk. It is used 

  1. To increase milk safety for the consumer by destroying disease-causing microorganisms (pathogens) that may be present in milk.
  2. To increase keeping the quality of milk products by destroying spoilage microorganisms and enzymes that contribute to the reduced quality and shelf life of milk.
Therefore, the correct answer is option D.