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.
Which of the following is an acidic salt?
NaHSO4
Na2SO4
CH3CO2Na
Na2S
Correct answer is A
A salt formed by the neutralisation of a strong acid and weak base is called acidic salt because its aqueous solution turns blue litmus red.
Which of the following salts when dissolved in water will NOT give the corresponding pH value?
NaHSO4, pH < 5
Na2CO3, pH > 8
Na2Cl,pH = 7
NaHCO
Correct answer is D
No explanation has been provided for this answer.
The function of sulphur during vulcanization rubber is to?
act as catalyst for the polymerization of rubber molecules
convert rubber from thermosetting to thermo plastics polymer
from chains which bind rubber molecules together
break down rubber polyer
shorten the chain length of rubber polyer
Correct answer is C
No explanation has been provided for this answer.
Which of the following roles does sodium chloride play in soap preparation? It
reacts with glycerol
purifies the soap
accelerates the decomposition of the fat or oil
separates the soap from the glycerol
converts the fatty acid to its sodium salt
Correct answer is D
No explanation has been provided for this answer.
Na4+
Ca++
Zn++
Al+++
Pb++
Correct answer is E
No explanation has been provided for this answer.