Question

Following are the steps involved in the experiment ‘to determine the percentage of water absorbed by raisins’. They are not in proper sequence.; I. Soak the raisins in fresh water.; II. Weigh dry raisins.; III. Weigh soaked raisins.; IV. Wipe out soaked raisins.; The proper sequence of step is; A. I, II, III, IV; B. II, I, IV, III; C. II, I, III, IV; D. I, III, IV, II(All India - 2011)

Answer 1

The correct answer is: B.

Explanation:

• First, we have to weigh the dry resins to determine its dry weight.
• Second, we have to soak the resins in fresh water for some time to allow it to absorb water and swell.
• Third, we need to wipe out the soaked resins to remove the excess water present on its surface that can give erroneous result if we weigh them as well.
• Fourth, we have to take the weight of the soaked resins to determine the wet weight.
• Then calculate the difference between the wet weight and dry weight of raisin.
• Divide the above difference by the dry weight of the raisins and multiply by 100.
• This will give the percentage of percentage of water absorbed by raisins