Four strips are cut from a fresh potato. The length of each strip is measured. One strip is placed in water and others in different concentrations of sugar solution. After an hour, the strips were measured again. The results are shown in the table. Which of the liquids P, Q, R and S is water? Liquid Original length of strip (mm) Final length of strip (mm) P 75 75 Q 78 80 R 82 80 S 86 85

Four strips are cut from a fresh potato. The length of each strip is m

1.	Four strips are cut from a fresh potato. The length of each strip is measured. One strip is placed in water and others in different concentrations of sugar solution. After an hour, the strips were measured again. The results are shown in the table. Which of the liquids P, Q, R and S is water? Liquid Original length of strip (mm) Final length of strip (mm) P 75 75 Q 78 80 R 82 80 S 86 85
A.	P
B.	Q
C.	R
D.	S
Answer» C. R

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