Which of the following is used widely in the manufacture of flavours and perfumes?
Alkanoates
Alkanones
Alkanes
Complex sugars
Aliphatic compounds
Correct answer is A
No explanation has been provided for this answer.
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.