2012
An increase in the pressure exerted on gas at a constant temperature results in
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2012 JAMB UTME Chemistry Past Questions
2012
50 cm3 of gas was collected over water at 10oC and 765 mm Hg. Calculate the volume of the gas at s.t.p. if the saturated vapour pressure of water at 10 oC is 5mm Hg
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2012
How many atoms are present in 6.0g of magnesium?[Mg = 24, NA = 6.02 x 1023 mol-1]
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2012
Which of the following methods can be used to obtain pure water from a mixture of sand, water and methanoic acid?
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2012
The electronic configuration of Mg 2+ is
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2012
If the elements X and Y have atomic numbers 11 and 17 respectively, what type of bond can they form?
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2012
L . Evaporation. ll. Sublimation. lll. Diffusion. IV. Brownian motion.Which of the above can correctly be listed as evidences for the particulate nature of matter?
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2012
2H2(g) + O2(g) → 2H2 O(g)In the reaction above, what volume of hydrogen would be left over when 300 cm3 of oxygen and 1000 cm3 of hydrogen are exploded in a sealed tube?
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2012
Chlorination of water for town supply is carried out to
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2012
The chemicals used to soften hard water involves the addition of
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2012
I. It has a varied composition from one place to another.II. It constituents can be separated by physical means.III. It contains unreactive noble gasesWhich of the above shows that air is a mixture?
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2012
Which of the following is used to study the arrangement of particles in crystal lattices?
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2012
Group VII elements are
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2012
The number of hydroxonium ions produced by one molecule of an acid in aqueous solution is its
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2012
Which of the following will produce a solution with pH less than 7 at equivalent point?
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2012
Which of the following pollutants is associated with brain damage?
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2012
Potassium trioxochlorate (V)has a solubility of 1.5 mol dm -3 at 45 oC.On cooling this solution to a temperature of 20 oC, the solubility was found to be 0.5 mol dm -3. What mass of KCIO 3 was crystalized out?[K = 39, Cl…
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2012
The solubilites of different solutes in a given solvent can be compared by
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2012
What number of moles of Cu 2+ will be deposited by 360 coulombs of electricity?[f = 96500 C mol -1]
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2012
2Na 2 O 2(s) + 2H 2 O 2(1) → 4 NaOH(s) +O2(s)The substance that is oxidized in the reaction above is
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