Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.
2.01g
1.00g
4.02g
8.04g
Correct answer is A
Zn2+ + 2e- → Zn
2F will be liberated 65g of Zn, if 0.65gm of Zn is liberated, the quantity of electricity used
X = (0.65/65) * 2
= 0.02F
∴ Hg2+ + 2e- → Hg
i.e 2F → 201gm of Hg
∴ 0.02 will liberated
Y = (0.02/2) * 201
= 2.01g
In the reaction E+F ↔ G+H, the backward reaction is favoured if the concentration of
F is increased
E is increased
E is reduced
G is reduced
Correct answer is C
No explanation has been provided for this answer.
Which of the following gases contains the least number of atoms at s.t.p?
1 mole of butane
3 mole of ozone
4 mole of chlorine
7 mole of argon
Correct answer is A
No explanation has been provided for this answer.
The chromatography separation of ink is based on the ability of the components to
React with solvent
React with each other
Dissolve in each other in the column
Move at different speeds in the column
Correct answer is D
No explanation has been provided for this answer.
69 oC - 70 oC
70 oC – 74 oC
82 oC – 84 oC
60 oC – 78 oC
Correct answer is C
No explanation has been provided for this answer.