2013
The shape of the carbon (lV) oxide molecule is
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2013 JAMB UTME Chemistry Past Questions
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2013
The radioisotope used in industrial radiography for the rapid checking of faults in welds and casting is
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2013
The rate of diffusion of a gas Y is half that of Z If the relative molecular mass of Y is 64 and the two gases diffuse under the same conditions, find the relative molecular mass of Z
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2013
What volume of carbon (ll) oxide is produced by reacting excess carbon with 10 dm3 of oxygen?
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2013
The presence of an impurity in substance will cause the melting point to
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2013
An example of a hygroscopic substance is
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2013
Steam changes the colour of anhydrous cobalt (ll) chloride from
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2013
The constituent of air that acts as a diluent is
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2013
The bond formed between two elements with electron configurations 1s2 2s2 2p6 3s2 and 1s2 2s2 2p4 is
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2013
Which of the following molecules is held together by hydrogen bond?
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2013
Three drops of a 1.0 mol dm-3 solution of HCl was added to 20 cm3 of a solution of pH6.4. The pH of the resulting solution will be
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2013
10.0 dm3 of water was added to 2.0 mol dm-3 of 2.5dm3 solution of HCl. What is the concentration of the final solution in mol dm-3?
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2013
In a water body, too much sewage leads to
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2013
The solvent used for removing grease stain is
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2013
If 24.4 g of lead (ll) trioxonitrate (V) were dissolved in 42 g of distilled water at 20oC; calculate the solubility of the solute in gdm-3.
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2013
Calculate the volume in dm3 of oxygen evolved as s.t.p. when a current of 5 A is passed through acidified water for 193s{F = 96500 Cmol-1, Molar volume of a gas at s.t.p. = 22.4 dm3}
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2013
In an electrochemical cell, polarization is caused by
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2013
2H2O (l) + 2F2(g) → 4HF(aq) + O2(g).In the reaction above, the substance that is being reduced is
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2013
An insoluble salt can be prepared by
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2013
Which of the following substances is not a salt?
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