NURSING EXAM QUESTIONS
PHARMACOGNOSY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Moisture content determination method where a weighed sample is heated at 100oC to constant weight, The loss in weight represents the water content
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Dew point
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Azeotropic
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Gravimetric
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Titrimetric
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Explanation:
Detailed explanation-1: -Typically, moisture content is determined via a thermogravimetric approach, i.e., by loss on drying, in which the sample is heated and the weight loss due to evaporation of moisture is recorded.
Detailed explanation-2: -The figure 2 shows the process of measuring moisture content thermo gravimetrically. For many food samples this method is mandatory particularly for grains. For grains the moisture content is measured by heating the grain in hot air oven at 100-110 °C for 24 hours or until constant weight comes.
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