The relative densities of zinc, brass, copper, gold and silver are respectively 7.1, 8.5, 8.9, 19.3, 10.5. A metal ornament which weighs 0.425kg and can displace 50 x 10-6m3m of water is made of
-
A.
zinc -
B.
brass -
C.
copper -
D.
gold -
E.
silver
Correct Answer: Option B
Explanation
R.D = (frac{text {density of object}}{text{density of water}})
= (frac{frac{0.425}{50 10^-6}{1000})
= 8.5