2012 - JAMB Chemistry Past Questions and Answers - page 5
41
A compound contains 40.0% C, 6.7% H 53.3% O. If the molecular mass of the compound is 180, its molecular formula is [C =12, H =1,O]
A
CH2O
B
C3H6O3
C
C6H6O3
D
C6H12O6
correct option: d
Users' Answers & Comments42
The saponification of an alkanoate to produce soap and alkanol involves
A
dehydration
B
esterification
C
hydrolysis
D
oxidation
correct option: c
Users' Answers & Comments43
2 - methyl propan -2- ol is an example of a
A
primary alkanol
B
secondary alkanol
C
tertiary alkanol
D
quartenary alkanol
correct option: c
Users' Answers & Comments44
Ethanol reacts with concentrated tetraoxosulphate (V) acid at a temperature above 170 oC to form
A
ethanone
B
ethene
C
ethyne
D
ethanal
correct option: b
Users' Answers & Comments45
An example of oxidation - reduction enzyme is
A
amylase
B
protease
C
lipase
D
dehydrogenase
correct option: d
Users' Answers & Comments