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Q53 (NDA-I/2009) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Basic mechanics concepts Answer Verified

What is the mass of one litre of cottonseed oil of density 926 kg/m3?

Result
Your answer: —  Â·  Correct: C
Explanation

To find the mass of a substance, the formula mass = density × volume is used [t5][t9]. The density of cottonseed oil is given as 926 kg/m³. The volume is one litre, which must be converted to the SI unit of cubic metres (m³) for consistency with the density unit [c1][t2]. One litre is equivalent to 0.001 m³ (since 1 m³ = 1000 litres) [t6][t10]. By substituting these values into the formula: Mass = 926 kg/m³ × 0.001 m³ = 0.926 kg. This calculation demonstrates that while the density is 926 kg/m³, the mass of a single litre is exactly one-thousandth of that value due to the volume conversion [t2][t4]. Therefore, the mass of one litre of cottonseed oil is 0.926 kg.

Sources

  1. [1] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 9: The Amazing World of Solutes, Solvents, and Solutions > How do scientists define density? > p. 141
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