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.
In a mixture of gases which do not react chemically together, the pressure of the individual gas is?
atmospheric pressure
vapor pressure
total pressure
partial pressure
Correct answer is D
The pressure exerted by an individual gas in a mixture is known as its partial pressure
decrease in the concentration of SO\(_2\)
have no effect on the reaction
shift the equilibrium position to the left
shift the equilibrium position to the right
Correct answer is C
Decrease in pressure favors the side with higher volume thus the equilibrium position will shift to the left
not replace Al
be replaced by Al
remain in the solution
replace Al
Correct answer is D
Cation which is lower in the series (less electropositive) will show a greater tendency to be discharged.
The process by which alkanoic acid reacts reversibly with alkanols is known as?
saponification
esterification
carboxylation
halogenation
Correct answer is B
No explanation has been provided for this answer.
The oxidation of chromium in Cr\(_2\)O\(_7)\(-2\) ?
+4
+5
+6
+7
Correct answer is C
2 atoms of Cr,
7 X -2 atoms of O
2Cr - 14 = -2
2Cr = -2 + 14
2Cr = 12
Cr = 6