The main impurity in iron ore during the extraction of iron is
The main impurity in iron ore during the extraction of iron is A. Silicon (IV) oxide B. Carbon…
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During the vulcanization of rubber, sulphur is added to
During the vulcanization of rubber, sulphur is added to A. Break down rubber polymer B. Lengthen the chain…
The general formula for the alkanals is
The general formula for the alkanals is A. ROH B. R2CO C. RCOOR1 D. RCHO Correct Answer: Option…
Fermentation is the
Fermentation is the A. breaking down of carbohydrate to glucose B. conversion of sugar to alcohol in the…
NH3(g) + HCl(g) → NH4Cl(s) The entropy change in the system above is
NH3(g) + HCl(g) → NH4Cl(s) The entropy change in the system above is A. negative B. indeterminate C.…
In which of the following reactions has the oxidation number of nitrogen increased?
In which of the following reactions has the oxidation number of nitrogen increased? A. 2NO(g) + Br2(l) →…
As the concentration of an electrolyte reduces, the conductivity
As the concentration of an electrolyte reduces, the conductivity A. reduces to zero B. decreases C. increase D.…
When ΔH is negative, a reaction is said to be
When ΔH is negative, a reaction is said to be A. ionic B. reversible C. exothermic D. endothermic…
3Cu(s) + 8HNO3(aq) 3Cu(NO3)2(aq) + 4H2O(l) + 2NO(g) In the equation above, copper is
3Cu(s) + 8HNO3(aq) 3Cu(NO3)2(aq) + 4H2O(l) + 2NO(g) In the equation above, copper is A. an electron acceptor…
2SO2(g) + O2(g) ↔ 2SO3(g) ΔH = -189 kJ mol-1 The equilibrium constant for the…
2SO2(g) + O2(g) ↔ 2SO3(g) ΔH = -189 kJ mol-1 The equilibrium constant for the reaction above is…