Correct Answer: Option A

Explanation

Given: Weight in air = 5.0 N, in water = 4.2 N, in liquid Y = 4.4 N.:
Loss of weight in  Water: \( 5.0 - 4.2 = 0.8 \, \text{N} \)
Loss of weight in  Liquid Y: \( 5.0 - 4.4 = 0.6 \, \text{N} \)

Relative density of liquid y
\(\text{RD}_{\text{Y}} = \frac{0.6}{0.8} = 0.75\)

 The relative density of liquid Y is  0.75 

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