2014 - JAMB Chemistry Past Questions and Answers - page 4
31
Fluorine does not occur in the free state in nature because
A
it is a poisonous gas
B
it belongs to the halogen family
C
it is inert
D
of its high reactivity
correct option: d
Users' Answers & Comments32
In the extraction of sodium from fused sodium chloride, the anode is made of platinum because
A
sodium is formed at the anode
B
chlorine is formed at the anode
C
sodium does not react with platinum
D
chlorine does not react with platinum
correct option: c
Users' Answers & Comments33
In the electrolytic extraction of cacium from calcium chloride, the cathode is
A
zinc
B
graphite
C
platinum
D
iron
correct option: d
Users' Answers & Comments34
A compound that gives a brick-red colour to a non-luminous flame is likely to contain
A
copper ions
B
sodium ions
C
calcium ions
D
aluminium ions
correct option: c
Users' Answers & Comments35
A few drops of NaOH solution was added to an unknown salt forming a white precipitate which is insoluble in excess solution. The cation likely present is
A
Zn2+
B
Pb2+
C
Ca2+
D
Al3+
correct option: c
Users' Answers & Comments36
The general formula of haloalkanes where X represents the halide is
A
Cn H 2n-1X.
B
C nH 2nX.
C
C nH 2n+2 X
D
C nH 2n+1X
correct option: d
Users' Answers & Comments37
The alkanol obtained from the production of soap is
A
propanol
B
ethanol
C
glycerol
D
methanol
correct option: c
Users' Answers & Comments38
Ethyne is passed through a hot tube containing organo-nickel catalyst to produce
A
isoprene
B
polythene
C
ethanol
D
benzene
correct option: d
Users' Answers & Comments39
Due to the unstable nature of ethyne, it is stored by dissolving in
A
ethane-1,2-diol
B
propanol
C
ethanoic acid
D
propanone
correct option: d
Users' Answers & Comments40
The process of converting starch to ethanol is
A
cracking
B
distillation
C
fermentation
D
oxidation
correct option: c
Users' Answers & Comments