A. kg m−²
B. kg m²
C. kg cm³
D. has no S.I unit
Correct Answer:
Option D – has no S.I unit
Explanation
Note: relative density has no S.I unit
∴ Relative density = weight of substance ÷ weight of equal volume of water
RD = w1 ÷ (w1 – w2) (no S. I unit)
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