by Sunday | Mar 19 | Chemistry JAMB
A. 24,125 C B. 48,250 C C. 72,375 C D. 96,500 C Correct Answer: Option B = 48,250 C Explanation 4OH ⇒ 2H2O + O2 + 4e- From the equation: 1 mole of Oxygen requires 4e i.e 1 mole of Oxygen requires 4F, where 1F = 96,500 C [ 4 X 96,500 X 0.125 ] ÷ 1 = 48,250...
by Sunday | Mar 19 | Chemistry JAMB
A. MCl B. MCl2 C. MCl3 D. M2Cl6 Correct Answer: Option C = MCl3 Explanation M Cl % composition 20.22 79.78 Atomic mass 27 35.5 Mole ratio 20.22 79.78 27 35.5 0.75 2.25 Divided 0.75 0.75 1 3 The formula of the Chloride =...
by Sunday | Mar 19 | Chemistry JAMB
A. 26.0kj/mol B. 65.0kj/mol C. 130.0kj/mol D. 260.0kj/mol Correct Answer: Option B = 65.0kj/mol Explanation 32g of CUSO4 liberate 13.0kj of heat Molar mass of CUSO4 = 160g No. of moles of CUSO4 = 32g No. of moles = 32(mass) / 160(molar mass) = 0.2 moles i.e 0.2 = 13kj...
by Sunday | Mar 19 | Chemistry JAMB
A. Light and combustible B. light and non-combustible C. heavy and combustible D. heavy and non-combustible Correct Answer: Option B – light and non-combustible Explanation Helium floats because it is buoyant; its molecules are lighter than the nitrogen and...
by Sunday | Mar 19 | Chemistry JAMB
A. efflorescent B. anhydrous C. hygroscopic D. insoluble Correct Answer: Option C – hygroscopic Explanation Deliquescence, is the process by which a substance absorbs moisture from the atmosphere until it dissolves in the absorbed water and forms a solution....
by Sunday | Mar 19 | Chemistry JAMB
A. diffusion B. migration C. reaction D. sedimentation Correct Answer: Option B – migration Explanation Chromatography is a method of separating mixtures by using a moving solvent on filter paper. The rate at which each solute moves up the paper depends on how...
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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