Question

The density of copper is 8.9g/cm square and that of iron is 7.8g/cm cube.Which of following is the correct statement?
a)Equal mases of copper and iron have equal volumes.
b)The volume of a certain mass of iron is more than the volume of equal mass of copper.
c)Equal volume of copper and iron have equal masses.
d)The mass of a certain volume of copper is more than the mass of equal volume of iron.​

Answer 1

• Answer:
• Mass of copper deposited =density×volume=8.94×1=8.94 gm.
• So according to faraday's law:
• W=ZQ= EE×Q

56500

⟹8.94= 63.5×Q

2×96500

• So, Q=27172 Coulomb

Answer is : 27172

Answer 2

Answer:

Option d is the correct statement