A student carried out the Benedict’s test on two different types of milk, X and Y.
A sample of each type of milk was heated to ${100^ \circ }C$ in a water-bath with Benedict’s solution and the time taken for the first appearance of a colour change was recorded.
The results are shown in the table.
Which row shows the biological molecule the student detected in each sample of milk and the sample of milk with the highest concentration of this biological molecule?
1 )
A
2 )
B
C
4 )
D
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