1997
How much heat will be liberated if 8g of hydrogen burns in excess oxygen according to the following equation? 2H2 + O2→ 2H2O,∆H = -571.7KJ (H = 1)
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1997 WAEC SSCE Chemistry Past Questions
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1997
The use of diamond in abrasives is due ti its
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1997
Which of the following is used widely in the manufacture of flavours and perfumes?
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1997
Alkanes react with the halogens mainly by
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1997
The by-product of the fermentation of sugar to ethanol is
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1997
Which of the following is the relative molecular mass of a compound which has empirical formula CH2O? (H = 1; C = 12; O = 16)
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1997
The following oxides react with both acids and bases to form salts except
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1997
Which of the following is used as water softener?
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1997
Which of the following when heated strongly in air will leave a metal as residue?
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1997
When chlorine is added to slaked lime, the product obtained is
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1997
Which of the substance lettered P to V in the equation below would be left on the filter paper if the reaction mixture were filtered? P (aq) + Q(aq) → V(s) + R(aq) + T(g)
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1997
If an element R belongs to the same group as sodium, an aqueous solution of ROH will
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1997
An atom 17 protons, 17 electrons and 18 neutrons has a mass number of
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1997
Lead and tin are the components of
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1997
Which of the following is an ore of aluminium?
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1997
Boyle's law can be expressed mathematically as
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1997
Which of the following Group 1 elements has the highest ionization energy?
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1997
Which of the following statements is correct about sodium chloride in the solid state?
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1997
The valence electrons of element 12Mg are in the
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1997
Element X, with electronic configuration 2, 8, 2 and element Y with electronic configuration 2, 8, 7 are like to combine by
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