A) \[1\,\,{{m}^{3}}\]of water
B) A normal adult man
C) \[10\,\,L\]of\[Hg\]
D) All have same weight
Correct Answer: A
Solution :
(a) Density of water\[=1\,\,g\,\,c{{m}^{-3}}\] Mass of water\[=1{{m}^{3}}={{10}^{6}}c{{m}^{-3}}\] \[Mass=volume\times density\] \[={{10}^{6}}c{{m}^{-3}}\times 1g\,\,c{{m}^{-3}}\] \[={{10}^{6}}g\] \[=\frac{{{10}^{6}}}{{{10}^{3}}}kg\] \[=1000\,\,kg\] (b) Mass of normal adult man\[=65\,\,kg\] (c) Density of\[Hg=13.6g\,\,c{{m}^{-3}}\] Volume of\[Hg=10\,\,L=10\times 1000\,\,c{{m}^{-3}}\] \[\therefore \]Mass of\[Hg=13.6\times 10\times 1000\] \[=136000g\] \[=13.6\,\,kg\] \[\therefore \]Mass of\[1\,\,{{m}^{3}}\]water is highest.
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