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Consider the following reaction equation: \(Br_{2} + 2KI \to 2KBr + I_{2}\). Bromine is acting as
An organic compound has the empirical formula \(CH_{2}\). If its molar mass is 42\(gmol^{-1}\), what is its molecular formula? (C = 12.0, H = 1.0)
In which of the following compounds does hydrogen form ionic compounds?
A reaction is endothermic if the
An acidic salt has
What is the solubility of a salt if 0.4g of it is obtained on evaporating 200\(cm^{3}\) of its saturated solution to dryness?
The process of extraction of iron from its ore is
Which of the following equations represents a redox reaction?
Which of the following organic compounds can undergo both addition and substitution reactions?
Which of the following raw materials is used in the plastic industry?
In the upper atmosphere, the ultra-violet light breaks off a free chlorine atom from chlorofluorocarbon molecule. The effect of this is that the free chlorine atom will
Which of the following separation techniques can be employed in obtaining solvent from its solution?
A sample of hard water contains some calcium sulphate and calcium hydrogen carbonate. The total hardness may therefore be removed by
In the removal of water hardness, permutit is regenerated with a strong solution of
When large hydrocarbon molecules are heated at high temperature in the presence of a catalyst to give smaller molecules, the process is known as
Which of the compounds is composed of Al, Si, O and H?
H\(_2\) S\(_{(g)}\) + Cl\(_{2(g)}\) → 2HCl\(_{(g)}\) + S\(_{(g)}\) In the reaction above, the substance that is reduced is
The elements in the periodic table are listed in order of increasing
The alkanoic acid found in human sweat is
The general formula of alkanones is