Question 4
Marks : +2 | -2
Pass Ratio : 100%
The restraint imposed on the behavior of water is dependent on which of the following factors?
Explanation: All of the mentioned impose restraint on the behavior of water.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
Statement 1: When there is an equilibrium between the vapor pressure and the percentage relative humidity, water activity is directly proportional to the percentage relative humidity.
Explanation: When there is an equilibrium between the vapor pressure and the percentage relative humidity, water activity is directly proportional to the percentage relative humidity. Even a water activity as high as 0.85 for food items is considered to be very dry for substances.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
If a dehydrated porous absorptive food is soaked in a solution whose viscosity is not too high to penetrate, then the food will absorb an amount of solution approximately equal to the amount of water it would normally absorb.
Explanation: If a dehydrated porous absorptive food is soaked in a solution whose viscosity is not too high to penetrate, then the food will absorb an amount of solution approximately equal to the amount of water it would normally absorb.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is true when a solute is added to water?
Explanation: When a solute is added to water, concentration of water is reduced and interaction with solute may break or increase the water structures.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is an advantage of semi moist food?
Explanation: All of the mentioned are advantages of semi moist food.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
Statement 1: Just like the vapor pressure on an individual component is higher than when it is in bulk, the water activity is low when in bulk.
Explanation: Just like the vapor pressure on an individual component is higher than when it is in bulk, the water activity is low when in bulk. Water activity is directly proportional to the surface tension and molecular weight of water and inversely proportional to the density of water.