1992 - JAMB Chemistry Past Questions and Answers - page 4
31
The gas formed when ammonium trioxonitrate (V) is heated with sodium hydroxide is?
A
hydrogen
B
nitrogen (IV) oxide
C
oxygen
D
ammonium
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32
The gas formed when ammonium trioxonitrate (V) is heated with sodium hydroxide is?
A
hydrogen
B
nitrogen (IV) oxide
C
oxygen
D
ammonium
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33
Safety matches contain sulphur and?
A
potassium trioxochlorate (V)
B
potassium trioxonitrate (V)
C
charcoal
D
phosphorus sulphide
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34
Addition of an aqueous solution of a salt gives a white precipitate. The salt is likely to be a?
A
nitrate
B
carbonate
C
chloride
D
sulphide
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35
Sodium hydroxide solution can be conveniently stored in a container made of?
A
lead
B
zinc
C
aluminium
D
copper
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36
Which of the following is NOT used as a raw material in the Solvay process?
A
Ammonia
B
Sodium chloride
C
Calcium trioxocarbonate (IV)
D
Sodium trioxocarbonate (IV)
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37
Duralumin consists of aluminium, copper, ?
A
zinc and gold
B
lead and maganese
C
nickle and silver
D
manganese and magnesium
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38
CaOs + H2O(l) → Ca(OH)2(s) ΔH -65 kj. The process represented by the above equation is known as?
A
dissolution
B
slaking
C
liming
D
mortaring
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39
The carbon atoms in ethene are?
A
sp3 hybridized
B
sp hybridized
C
sp2 hybridized
D
not hybridized
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40
Which of the following compounds reacts with sodium metal as well as silver and copper salts ?
A
CH3C Ξ C—CH3
B
CH3CH2CH2
C
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D
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