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Doctors Medicines MCQs Q&A

  1. Apple - Jam
  2. Milk - Paneer
  3. Raw Mango - Pickle
  4. Dal - Papad
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1 Answers

Option 2 : Milk - Paneer

Concept:

  • Food preservation is the technique to prevent food spoilage, food poisoning, and microbial contamination in food.
  • Food preservation is done to preserve food for a longer time.​

Explanation:

Objectives of food preservation:

  • To prevent microbial contamination.
  • To kill pathogens.
  • To minimize food spoilage and food poisoning.

Food preservation methods:

  • Pickling:
    • Salt and extra edible oils are two main preservatives that are used in pickling.
    • It prevents microbial growth.
    • Example: Raw mango to mango pickle.
  • Drying:
    • It is the process of removal of water from food.
    • It is the simplest method and prevents food spoilage by removing water.
    • Example: Potato to chips.
  • Cooling:
    • Cooling at very low temperatures prevents microbial growth.
    • Microbes do not get the optimum temperature they need for growth, their growth is inhibited.
    • Example: Fresh peas to frozen peas.
  • Sugaring:
    • Sugar is a good moisture absorbent.
    • Reducing moisture content restrains microbial growth.
    • Example: Apple to apple jam.
  • Salting:  
    • Preservation by salt is known as salting.
    • Salting helps to preserve fruits for the long term.
    • Example: Salting of meats and fish.
  • Adding chemicals:
    • Adding synthetic preservatives like vinegar, sodium benzoate, sodium metabisulphite, etc.
  • Other methods:
    • Sterilization, radiation, smoking etc.

Thus, Milk - Paneer is not the correct way of food preservation.

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Related Questions

Consider the following solution to the producer-consumer synchronization problem. The shared buffer size is . Three semaphores empty, full and mutex are defined with respective initial values of 0, and 1. Semaphore empty denotes the number of available slots in the buffer, for the consumer to read from. Semaphore denotes the number of available slots in the buffer, for the producer to write to. The placeholder variables, denoted by P, Q, R, and S, in the code below can be assigned either empty or full. The valid semaphore operations are: wait ( ) and signal ( ). Producer: Consumer: do {         wait (P) ;         wait (mutex) ;         //Add item to buffer         signal (mutex) ;         signal (Q) ; } while (1) ; do {          wait (R) ;          wait (mutex) ;          //Consume item from buffer          signal (mutex) ;          signal (S) ; } while (1) ;   Which one of the following assignments to P, Q, R and S will yield the correct solution?
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