To obtain pure carbon (II) oxide from its mixture with carbon (IV) oxide, the mixture…
To obtain pure carbon (II) oxide from its mixture with carbon (IV) oxide, the mixture should be A.…
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The raw materials used for the smelting of iron ore in a furnace is
The raw materials used for the smelting of iron ore in a furnace is A. CaSO4 B. CaCO3…
The property used in the industrial preparation of nitrogen and oxygen from air is
The property used in the industrial preparation of nitrogen and oxygen from air is A. rate of diffusion…
In a flame test for calcium, the flame appears
In a flame test for calcium, the flame appears A. green when viewed through a blue glass B.…
Which of the following alloys contain iron?
Which of the following alloys contain iron? A. Duralumin and steel B. Brass and bronze C. Steel and…
Metalliods are also referred to as
Metalliods are also referred to as A. semi-metals B. metals C. colliods D. non-metals Correct Answer: Option A…
The ores that can be concentrated by flotation are
The ores that can be concentrated by flotation are A. nitride ores B. sulphide ores C. oxide ores…
In the diagram above which of the cures illustrates Arrhenius’ law?
In the diagram above which of the cures illustrates Arrhenius’ law? A. Y B. Z C. R D.…
The most abundant element on the earth’s crust is
The most abundant element on the earth’s crust is A. nitrogen B. hydrogen C. oxygen D. flourine Correct…
NH4Cl(s) ↔ NH3(g) + HCL(g) The reaction above can only attain equilibrium if
NH4Cl(s) ↔ NH3(g) + HCL(g) The reaction above can only attain equilibrium if A. a gaseous reactant is…