1993
Alkanes are used mainly
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1993 WAEC SSCE Chemistry Past Questions
1993
Trioxosulphate (lV) acid is not stored for a long period because it
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1993
Which of the following solids has a network structure?
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1993
Starch undergoes complete hydrolysis to produce
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1993
Chlorine is is used in water treatment as
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1993
In which of the following changes is ∆S negative ?
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1993
Sulphur burns in air to form
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1993
What does X atand for in the following expression? X = Log(10)(H+)
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1993
Carbon is often deposited in the exhaust-pipe of cars because of the
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1993
What volume of distilled water should be added to 400cm3 of 2.0 mole dm-3 HSO4 to obtain 0.20 mole dm-3 of solution>
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1993
The following gases decolorize bromine water except
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1993
Consider the reaction represented by the following equation CaCI2(aq) + H 2C2O 4(aq) ⇌ CaC 2O4(s) + 2HCI(aq). Which of the following would dissolve the precipitate of CaC 2O4 formed?
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1993
Some precious stones such as ruby and sapphire consist of aluminum oxide coloured by traces of the oxides of
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1993
Which of the following pieces of deposited if a current of 10A was passed through a solution of copper(ll) salt for 965 seconds? (1F = 96500 C)
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1993
Examples of polymers include the following except
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1993
Which of the following will not affect the degree of hardness in a sample of temporarily hard water?
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1993
The component of air that removed when air is bubbled into alkaline pyrogallol solution is
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1993
Which of the following substances is a peroxide?
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1993
Which of the following indicates the correct increasing order of oxidizing power of the halogens?
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1993
An alkene may be converted to an alkane by
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