The relative densities of zinc, brass, copper, gold and silver are respectively 7.1, 8.5, 8.9, 19.3…

JAMB 1980

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

A. zinc

B. brass

C. copper

D. gold

E. silver

Correct Answer: Option B

Explanation

Density of the metal ornament = Mass of the metal ornament/Volume of the water displaced

D = 0.425/(50 × 10^-6)

D = 8500Kg/m³

R.D = density of object/density of water

R.D =8500/1000

R.D = 8.5

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About Teezab 1349 Articles
His Name is Tiamiyu Abdulbazeet Olawale. He is a student at the University of Ilorin studying Electrical and Electronics Engineering. He likes to give the latest updates about Nigeria and international institutions as he aims at helping people to lay their hands on the right information.

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