At the end of the experiment, 'to determine the percentage of water absorbed by raisins', the raisins are wiped just before weighing. This is to ensure that:

(1) hands do not get wet
(2) the raisins lose water before weighing
(3) the weighing scale does not get wet
(4) only water absorbed by raisins is weighed

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Solution

In the above experiment, raisins are wiped just before weighing so that only the water absorbed by raisins is weighed.

Hence, the correct answer is option 4.

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In the above experiment, raisins are wiped just before weighing so that only the water absorbed by raisins is weighed. Hence, the correct answer is option 4.

In the above experiment, raisins are wiped just before weighing so that only the water absorbed by raisins is weighed.

Hence, the correct answer is option 4.