2013
Noble gas molecules are held together by
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2013 WAEC SSCE Chemistry Past Questions
2013
Which of the following elements is diatomic?
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2013
Which of the following phenomenna lead to decrease in volume of a liquid in an open container?
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2013
The gas law which describes the relationship between volume and temperature is
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2013
The percentage by mass of calcium in Ca(OCI)2 is [Ca = 40.0; CI = 35.5; O = 16.0]
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2013
The volume of 0.25 moldm-3 solution of KOH that would yield 6.5g of of solid KOH on evaporation is (K = 39.0; o = 16.0; H = 1.00)
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2013
Consider the reaction represented by the following equation: C2H2 + yH2 → C2H6. The value of y in the reaction is
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2013
The aqueous solution which has pH > 7 is
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2013
When heat is absorbed during a chemical reaction, the reaction is said to be
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2013
Which of the following variables is a measure of the average kinetic energy of the molecule of a gas?
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2013
Which of the following gases are arranged in increasing order of diffusion rate? [H = 1 .0; C = 12; N = 14; O = 16; S = 32]
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2013
The pressure exerted by a gas is a function of the
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2013
Consider the reaction represented by the equation: N2O4(g) ⇌ 2NO2(g) ; ∆H = + x kJmol-1What happens when the temperature is reduced at equilibrium?
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2013
The following factors affect the solubility of a solid in a given solvent except
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2013
A substance is said to be impure if
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2013
Which of the following compounds crystallizes without water of crystallization?
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2013
Which of the following acids would readily react with CaCO3 to liberate CO2?
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2013
Which of the following organic compounds would decolourize bromie water?
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2013
The major product formed by the reaction between ethanoic acid and aqueous sodium hydroxide is
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2013
Consider the redox reaction as represented by the following equation: 12(aq) + 2S2O32-(aq) → 21-(aq) + S4O62-(aq). Which of the species in the equation is reduced?
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