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.
Use the option above to answer this question. The structure of benzoic acid is
A
B
C
D
Correct answer is D
No explanation has been provided for this answer.
for a 10o rise in temperature, rate of reaction is double
for a 10 o rise in temperature, rate of reaction is halved
time taken for iodine to appear does not depend on temperature
for a 10 o rise in temperature rate of reaction is tripled
Correct answer is B
The iodine liberation process is significantly affected by the amount of acid, that of potassium iodide added, the waiting time for the liberation, and light; therefore, the process plays a key role for the accuracy of the titration results.
for a 10 o rise in temperature, rate of reaction is halved
A
B
C
D
Correct answer is A
lime juice reacts with NaCO3 with the evolution of CO2 because it is an acid while NaCO3 with ethanol does not result in a significant chemical reaction.
A
B
C
D
Correct answer is C
No explanation has been provided for this answer.
1.5
1.4
4.1
5.1
Correct answer is C
The ratio of permanent to temporary hardness will be 20:(20 - 15) = 20:5 = 4:1