2003 - JAMB Chemistry Past Questions and Answers - page 4
31
Metals of the first transition series have special properties which are different from those of groups I and II elements because they have partially filled
A
s orbitals
B
p orbitals
C
d orbitals
D
f orbitals
correct option: c
Users' Answers & Comments32
Hydrogen can be displaced from a hot alkaline solution by
A
Fe
B
Cu
C
Ca
D
Sn
correct option: a
Users' Answers & Comments33
Which of the following statements is true of sulphur (IV) oxide?
A
It forms tetraoxosulphate (VI) acid with water
B
It is an odourless gas
C
It is an acid hybride
D
It forms white precipitate with acidified barium chloride
correct option: c
Users' Answers & Comments34
The salt that will form a precipitate soluble in excess ammonia solution is
A
Ca(NO3)2
B
Cu(NO3)2
C
Mg(NO3)2
D
Al(NO3)3
correct option: b
Users' Answers & Comments35
The metal that liberates hydrogen from cold water in bubbles only is
A
Na
B
K
C
Ca
D
Al
correct option: a
Users' Answers & Comments36
Chlorine gas turns a damp starch-iodide paper
A
pink
B
colourless
C
red
D
dark blue
correct option: d
Users' Answers & Comments37
The modern process of manufacturing steel for iron is by
A
treatment with acids
B
oxidation
C
blast reduction
D
treatment with alkanal
correct option: c
Users' Answers & Comments38
Ethene reacts with hydrogen bromide to give
A
CH2Br2
B
CH3CH2Br
C
C2H2Br2
D
CHBr2
correct option: b
Users' Answers & Comments40
The leachate of a certain plant ash is used in local soap making because it contains
A
sodium chloride and potassium hydroxide
B
sodium hydroxide
C
potassium hydroxide
D
soluble carbonates and hydrogen carbonates
correct option: b
Users' Answers & Comments