Q.1
Which of the following is NOT delivered by the modified atmosphere (MA) or controlled atmosphere (CA)?
  • a) Delay ripening of fruits
  • b) Retard spread of diseases
  • c) Toughing
  • d) Incidence of storage disorders
Q.2
Which of the following variables affect gas exchanges into and out of the package?
  • a) Weight of apples
  • b) Ethylene concentration
  • c) Structure of the packaging film
  • d) All of the mentioned
Q.3
Which of the following is NOT the correct method to enhance storage?
  • d) None of the mentioned
  • a) Reducing pressure
  • b) Increasing ethylene
  • c) Decreasing respiration
Q.4
StatementSub atmospheric storage involves ventilating the produce with air saturated with water vapor by continuously evacuating the container with a sealed vacuum pump.
  • a) True, False
  • b) True, True
  • c) False, False
  • d) False, True
Q.5
Under hypobaric storage, when gas is in equilibrium with its surroundings, the diffusivity _____ and concentration gradient _____
  • a) Increase by ten folds, decreases to one-tenth
  • b) Decreases to one-tenth, increase by ten folds
  • c) Stays constant, stays constant
  • d) None of the mentioned
Q.6
StatementUnder hypobaric storage, the gas always attains equilibrium with its surroundings.
  • a) True, False
  • b) True, True
  • c) False, False
  • d) False, True
Q.7
StatementUnder hypobaric storage, oxygen content is reduced to reduce the rate of synthesis of volatile.
  • a) True, False
  • b) True, True
  • c) False, False
  • d) False, True
Q.8
Which of the following is true with respect to volatile by controlling oxygen content in storage?
  • a) Lowing in endogenous concentration increases rate of volatile formation
  • b) Anaerobiosis favors its production if it is a highly reduced compound
  • c) Limiting the amount of energy available
  • d) All of the mentioned
Q.9
StatementA gas atmosphere containingCO2 is effective in inhibiting slime-producing bacteria.
  • a) True, False
  • b) True, True
  • c) False, False
  • d) False, True
Q.10
StatementInfluence of bacteria has more effect on the storage of food than the pH control.
  • a) True, myoglobin
  • b) True, haemoglobin
  • c) False, myoglobin
  • d) False, haemoglobin
Q.11
Meats stored in _____ environment have a better color than _____
  • a) CO2, O2
  • b) O2, CO2
  • c) CO2, N2
  • d) N2, O2
Q.12
Which of the following statements is true?
  • a) Polyethylene films have a good heat-sealability
  • b) Polyvinylidene chloride films are gas and water vapor impermeable
  • c) Nylon films have high physical strength
  • d) All of the mentioned
Q.13
Three level packaging is done for rice. Which bag is for quality control?
  • a) Inner most bag 1
  • b) Middle bag 2
  • c) Outermost bag 3
  • d) All of the mentioned
Q.14
StatementUnder water storage is more effective than that in the air.
  • a) True, False
  • b) True, True
  • c) False, False
  • d) False, True
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