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The stability of atomic nucleus is determined by ratio of
The law which states that a pure chemical compound, no matter how it is made, will be made up of the same elements contained in the same proportion by mass is
The percentage of hydrogen in the sixth member of the class of the aliphatic alkanes is [H =1, C =12 ]
The compound of Copper used as a fungicide is
If a salt weighs 2g and upon exposure to the atmosphere weighs 1.5g, this is as a result of
The volume occupied by 1 mole of an ideal gas at a temperature of 13\(^0\)C and a pressure of 1.58 atm is
[ R = 0.082 atm dm\(^3\) K\(^{-1}\)mol\(^{-1}\) ]
Calculate the number of moles of Copper that will be deposited, if 2 Faraday of electricity is passed through the copper during the electrolysis of copper(II)tetraoxosulphate(VI)
[1F = 96500C ]
Which of the following is used in forming slag in the blast furnace for the extraction of iron?
The basicity of tetraoxophosphate(V) acid is
A type of isomerism that ClCH=CHCl can exhibit is
In the conductance of aqueous CuSO\(_4\) solution, the current carriers are the
Hydrogen chloride gas and ammonia can be used to demonstrate the fountain experiment because they are
A radioactive element of mass 1g has half-life of 2 minutes, what fraction of the substance would have disintegrated after 10 minutes?
Hydrochloric acid is not suitable in the preparation of ethanoic acid because it
After breathing in a test tube that contains acidified K\(_2\)Cr\(_2\)O\(_7\), a man noticed the change in the colour of K\(_2\)Cr\(_2\)O\(_7\) from orange to green. This suggests the presence of
What accounts for the low melting and boiling points of covalent molecules?
The general molecular formula C\(_n\)H\(_{2n-2}\) represents that of an
Benzene formed nitrobenzene at temperature of 60\(^0\)C when it reacts with mixture of concentrated trioxonitrate(V) acid and concentrated
Alkylation of benzene is catalyzed by
C\(_x\)H\(_y\)O + 5O\(_2\) → 4CO\(_2\) + 4H\(_2\)O
C\(_x\)H\(_y\)O in the equation is