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.
Alkanes react with the halogens mainly by
oxidation
polymerization
addition
reduction
substitution
Correct answer is E
No explanation has been provided for this answer.
The by-product of the fermentation of sugar to ethanol is
propane -1,2,3-triol
ethyl ethanoate
ethanedioc acid
propanol
carbon (lV) oxide
Correct answer is E
No explanation has been provided for this answer.
42
45
126
180
145
Correct answer is D
Empirical formula = CH\(_2\)O
= 12 + (2 x 1) + 16
= 30
Molecular formula = (CH\(_2\)O)\(_n\), where n is a whole number.
= 30n
\(\therefore\) From the options, only 180 is a multiple of 30. Hence, that is the only likely molecular mass with respect to CH\(_2\)O.
The reaction between alkanoic acids and alkanols in the presence of a mineral acid is known as
saponification
hydrolysis
polymerization
esterification
dehydration
Correct answer is D
No explanation has been provided for this answer.
Ethene undergoes mainly addition reactions because it is
a gas
a hydrocarbon
unsaturated
easily polymerized
a covalent compound
Correct answer is C
No explanation has been provided for this answer.