The relative densities of zinc, brass, copper, gold and s...
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 10-6m3 of water is made of
zinc
brass
copper
gold
silver
Correct answer is B
R.D = density of objectdensity of water
= \frac{\frac{0.425}{50 10^-6}{1000}
= 8.5
Tea pots are often silver-coated to prevent heat loss by ...
The phenomenon that shows that increase in pressure lowers the melting point can be observed in ...
Neutrons were discovered by ...
When an object is placed at the centre of curvature of a concave mirror, its image is formed at ...