Which is the fairest way to compare two paper towel brands for absorbency?

Type: MCQ • Marks: 1

A. Choose the brand with the nicer packaging

B. Use equal-sized pieces and the same volume of water

C. Use different-sized pieces and different water volumes

D. Test one brand indoors and one outdoors in rain

Explanation

A fair comparison controls relevant factors such as sample size and water volume.

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Class 9th Science (MCQ)

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