Chemistry Past Questions and Answers

If 10.8 g of silver is deposited in a silver coulometer volume of oxygen liberated is?

A 0.56 dm3
B 5.60 dm3
C 11.20 dm3
D 22.40 dm3

Question 667:

0.1 faraday of electricity deposited 2.95 g of nickel during electrolysis of an aqueous solution. Calculate the number of moles of nickel that will be deposited by 0.4 faraday? (Ni = 58.7)

A 0.20
B 0.30
C 0.04
D 5.87

Question 668:

Changes in the physical in the scheme above.The letter X,Y and Z respectively represent

A Sublimation, condensation and freezing
B Sublimation, vapourization and solidification
C Freezing, condensation and sublimation
D Evaporation, liquefaction and solidification

Question 669:

Use the graph above to answer this question. The structure of cis-2-butene is

Question 670:

What is the IUPAC name for the hydrocarbon

A 2-ethyl-4-methylpent-2-ene
B 3,5-dimethylhex-3-ene
C 2,4-dimethylhex 3-ene
D 2-methyl-4-ethylpent-3-ene