1991
In which of the following crystals are the particles held by van der Waal's forces only?
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1991 WAEC SSCE Chemistry Past Questions
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1991
Compounds that have the same molecular formula but different structures are said to be
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1991
Which of the following properties is not characteristic of electrovalent compounds?
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1991
How many principal electronic shells has an atom whose electronic configuration is given as 1s22s22p63s1?
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1991
Which of the following is not a direct petroleum product?
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1991
In solution, aminoethanoic acid (glycine) can be represented as NH+3 CH2COO. This implies that it
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1991
A river contaminated by alkali waste will have a pH of about
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1991
An organic compound which reacts readily with bromine to form a compound with the formula CH3CHBrCH2Br is
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1991
When a crystal was added to its solution, it did not dissolve and the solution remained unchanged, showing that the solution was
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1991
A current of 4.0 amperes was passed through copper (ll) tetraoxosulphate (IV) solution for one hour using copper electrodes. What was the mass of copper deposited? (Cu = 64, 1F = 96500 C)
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1991
Which of the following is suitable for determining different isotopes present in an element which exhibits isotopy?
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1991
Hydrogen is used for the following except
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