Question

One of the precautions for the experiment " To determine the percentage of water
absorbed by raisins" is - " Wipe the soaked raisins gently using a filter paper before
taking final mass" This precaution is important as it ensures that

• A. Only the water absorbed by the raisins is weighed
• B. hands do not get wet
• C. scale pan does not get wet
• D. the raisins lose water before weighing.

Answer 1

The correct option is A Only the water absorbed by the raisins is weighed

A. Only the water absorbed by the raisins is weighed

Solution : The water is absorbed by the raisins due to the result of endosmosis and thus to determine the amount of water absorbed by the raisins we must weigh it and before that we must wipe it to prevent any discrepancy by adding the weight of the water sticking to raisins.

So the correct answer is "Only the water absorbed by the raisins is weighed".