Ethanol can easily be produced by
Ethanol can easily be produced by A. fermentation of starch B. distillation of starch solution C. catalytic oxidation…
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The gas that gives brown colouration in brown ring test is
The gas that gives brown colouration in brown ring test is A. NO B. CO2 C. NO2 D.…
The property which makes alcohol soluble in water is the
The property which makes alcohol soluble in water is the A. boiling point B. hydrogen bonding C. ionic…
Steam changes the colour of anhydrous cobalt (II) chloride from
Steam changes the colour of anhydrous cobalt (II) chloride from A. blue to pink B. white to red…
The substance least considered as a source of environmental pollution is
The substance least considered as a source of environmental pollution is A. Lead compounds B. Organophosphorous compounds C.…
The furring of kettles is caused by the presence in the water of
The furring of kettles is caused by the presence in the water of A. Calcium tetraoxosulphate (VI) B.…
25cm3 of a 0.2 mol dm3 solution of Na2CO3 requires 20 cm3 of a solution…
25cm3 of a 0.2 mol dm3 solution of Na2CO3 requires 20 cm3 of a solution of HCl for…
Three drops of a 1.0 mol dm-3 solution of NaOH are added to 20 cm3…
Three drops of a 1.0 mol dm-3 solution of NaOH are added to 20 cm3 of a solution…
Tetraoxosulphate (VI) acid burns the skin by
Tetraoxosulphate (VI) acid burns the skin by A. Hydrolysis B. Hydration C. Heating D. Dehydration Correct Answer: Option…
CU2S(s) + O2(g) → 2CU(s) + SO2(g) What is the change in the oxidation number…
CU2S(s) + O2(g) → 2CU(s) + SO2(g) What is the change in the oxidation number of copper in…