by Sunday | Mar 21 | Chemistry JAMB
A. Tumeric on filter paper B. Silica gel coated with saliva nitrate C. Potassium permanganate-sulphuric acid D. Potassium dichromatic-sulphuric acid Correct Answer: Option D – Potassium dichromatic-sulphuric acid Explanation The earliest developed breathalyzer...
by Sunday | Mar 19 | Chemistry JAMB
A. Passed over heated copper(ii)oxide B. Bubbled through water C. Bubbled through conc H2SO4 D. Bubbled through conc NaOH Correct Answer: Option D = Bubbled through conc NaOH Explanation Carbon(ii)oxide is prepared from carbon(iv)oxide by passing the latter through...
by Sunday | Mar 19 | Chemistry JAMB
A. Nitrogen B. Hydrogen C. Oxygen D. Fluorine Correct Answer: Option C = Oxygen Explanation Oxygen, O2, is by far the most abundant element in earth’s crust at 46.6 percent, nearly half of the mass of the...
by Sunday | Mar 19 | Chemistry JAMB
A. Dye B. Dispersant C. Salt D. Mordant Correct Answer: Option D – Mordant Explanation Aluminum hydroxide is also used as a mordant in dyeing.
by Sunday | Mar 19 | Chemistry JAMB
A. 8 valence electrons B. 7 valence electrons C. 2 valence electrons D. 3 valence electrons Correct Answer: Option A – 8 valence electrons Explanation A halide ion is a halogen atom bearing a negative charge (which is an anion with a charge of -1). The halide...
by Sunday | Mar 19 | Chemistry JAMB
A. Sublimation B. Crystallization C. Distillation D. Evaporation Correct Answer: Option A – Sublimation
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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