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.
2.7g
1.2g
0.9g
0.3g
Correct answer is D
No explanation has been provided for this answer.
Extractive distillation
Filtration followed by distillation
Neutralization with sodium hydroxide followed by distillation
Neutralization with sodium hydroxide followed by filtration
Correct answer is A
Due to the presence of maximum Azeotrope,we use extractive distilination (with extractive distilation agents like sulfone) used for mixtures with low relative volatility,nearing unity.
Azeotrope is a mixture of liquids that has a constant boiling point because the vapour has thesame composition as the mixture.
lowering the pressure of the reaction
increasing the surface area of the reaction
increasing the rate of the reaction
increasing the energy barrier of the reaction
Correct answer is C
No explanation has been provided for this answer.
Which of the following pairs of substances will react further with oxygen to form a higher oxide?
CO\(_2\) and H\(_2\)O
NO and H\(_2\)O
CO and CO\(_2\)
SO\(_2\) and NO
Correct answer is D
No explanation has been provided for this answer.
The boiling of fat and aqueous caustic soda is referred to as
hydrolysis
esterification
acidification
saponification
Correct answer is D
No explanation has been provided for this answer.