760 x 22.4 x 308750 x 273x 35.5dm3
760 x 22.4 x 308750 x 273xdm3
750 x 22.4 x 35.5760 x 273dm3
760 x 22.4 x 35.5750x22.3x273
760 x 22.4 x 35.5750 x 308dm3
Correct answer is B
No explanation has been provided for this answer.
How many Faradays of electricity are required to liberate 9g of aluminium? [Al = 27]
0.1
0.3
1
2.7
3
Correct answer is C
No explanation has been provided for this answer.
Which metal bromide is widely used in photography?
calcium bromide
magnesium bromide
potassium bromide
silver bromide
sodium bromide
Correct answer is D
No explanation has been provided for this answer.
What change will occur during the electrolysis of brine using carbon electrodes?
Chlorine will be given off at the anode
Oxygen gas will be given off at the anode
Sodium will be deposited at the cathode
The resulting solution, after electrolysis, will be acidic.
The volumes of hydrogen and chlorine given off during the same time are equal
Correct answer is A
Chlorine is discharged as follows:
Cl−→Cl+e−
Cl+Cl→Cl2(g)
This reaction occurs at the anode.
Which metal is a constituent of both bronze and solder?
copper
lead
silver
tin
zinc
Correct answer is D
No explanation has been provided for this answer.