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The highest isotope of hydrogen is
Na\(_2\)X ⇌ 2Na\(^+\) + X\(^{2-}\)
The bond between Na and X is likely to be
The group VIII elements are the inert gases because they
How much of 5g of radioactive element whose half life is 50days remains after 200days?
The principle which states that no two electrons in the same orbitals of an atom have same value for all four quantum numbers is the
What method is suitable for the separation of gases present in air?
CuO\(_s\) + H\(_2\)(\(_g\)) ⇌ Cu\(_s\) + H\(_2\)O(\(_g\))
In the equation above, the effect of increased pressure on the equilibrium position is that
One of the following is not a water pollutant?
The ions responsible for permanent hardness in water are sulphates of
In the graph above, y represents
Which of these is the most preferred separation technique for the isolation of solutes where the purity of the constituent is of utmost importance?
How many moles of CO\(_2\) are produced when ethanol is burnt with 6g of oxygen
For chemical reaction to be spontaneous, ∆G must be
The chemical formula for potassiumhexacyanoferrate(II) is
Strong acids can be distinguished from weak acids by any of the following methods, EXCEPT
The pH of a 0.001 mol dm\(^{-3}\) of H\(_2\)SO\(_4\) is
[Log\(_{10}\)2 = 0.3]
The table above shows the formulae of some ions. In which of these compounds is the formula not correct?
What would be the order of the electrolytic cell in an industry intending the production of silver plated spoons?
The quantity of electricity required to deposit 180g of Ag from a molten silver trioxonitrate(V) is
[Ag = 108]
127g of sodium chloride was dissolved in 1.0dm\(^3\) of distilled water at 25\(^0\)C . Determine the solubility in moldm\(^{-3}\) of sodium chloride at that temperature. [Na = 23, Cl = 35.5]