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.
The process involved in the conversion of an oil into margarine is known as?
hydrogenation
condensation
pyrolysis
dehydration
cracking
Correct answer is A
Margarine is an inexpensive alternate to butter, made from oil or a combination of oils through the process of hydrogenation.