2002 - JAMB Chemistry Past Questions and Answers - page 3
21
The property which makes alcohol soluble in water is the
A
boiling point
B
hydrogen bonding
C
ionic character
D
covalent nature
correct option: b
Users' Answers & Comments22
Steam changes the colour of anhydrous cobalt (II) chloride from
A
blue to pink
B
white to red
C
white to green
D
blue to white
correct option: a
Users' Answers & Comments23
The gas that gives brown colouration in brown ring test is
A
NO
B
CO2
C
NO2
D
CO
correct option: a
Users' Answers & Comments24
Ethanol can easily be produced by
A
fermentation of starch
B
distillation of starch solution
C
catalytic oxidation of methane
D
destructive distillation of wood
correct option: a
Users' Answers & Comments25
Which of the following gives a precipitate when treated with NaOH solution?
A
AlCl3
B
NH4CL
C
CH3COONa
D
Na2CO3
correct option: a
Users' Answers & Comments26
An example of element that can catenate is
A
bromine
B
nitrogen
C
chlorine
D
carbon
correct option: d
Users' Answers & Comments27
The reaction of an alkene with hydrogen in the presence of catalyst is
A
a substitution reaction
B
an oxidation reaction
C
a nucleophilic reaction
D
an addition reaction
correct option: d
Users' Answers & Comments29
Which of these pairs are synthetic and natural macromolecules respectively?
A
Haemoglobin and nylon, creatine and polyethylene
B
Nylon and polyethlene, creatine and Haemoglobin
C
Nylon and creatine, polyethylene and haemoglobin
D
Polyethylene and creatine, nylon and haemoglobin
correct option: c
Users' Answers & Comments30
Ordinary glass is manufactured from silica, CaCO3 and
A
Na2CO3
B
K2CO3
C
K2SO4
D
NaHCO3
correct option: a
Users' Answers & Comments