by Sunday | Sep 14 | Chemistry JAMB
A. an hydrous CaCl4 B. concentrated NaCO4 C. dilute NaOH D. concentrated H2SO4 Correct Answer: Option D – concentrated H2SO4 Explanation Esters are produced when carboxylic acids are heated with alcohol in the presence of an acid catalyst. The catalyst is...
by Sunday | Sep 14 | Chemistry JAMB
A. Isotopy B. Resonance C. Isomerism D. Reforming Correct Answer: Option B – Resonance Explanation Resonance involves two forms of a compound. Isomerism involves two or more forms of an element. Reforming involves the rearrangement of molecule. This deals with a...
by Sunday | Sep 14 | Chemistry JAMB
A. SO3 B. NO2 C. SO2 D. CO2 Correct Answer: Option D – CO2 Explanation H2CO3 is an example of a weak acid while H2SO4 and HNO3 are examples of strong acid. CO2 combines with water to give a weak trioxocarbonate (IV) acid. CO2 + H2O →...
by Sunday | Sep 14 | Chemistry JAMB
A. CaCO3 B. Na2CO3 C. Na2SO4 D. CaSO4 Correct Answer: Option A – CaCO3 Explanation Permanent hardness in water= Mg and Ca Sulphate. Temporary hardness in water= Mg and Ca Carbonate. Temporary hardness of water is caused by Magnesium and calcium...
by Sunday | Sep 14 | Chemistry JAMB
A. ethanol B. bromine chloride C. chlorine water D. water Correct Answer: Option A – ethanol Explanation Tincture of iodine, iodine tincture, or weak iodine solution is an antiseptic. It is usually 2–7% elemental iodine, along with potassium iodide or sodium...
by Sunday | Sep 14 | Chemistry JAMB
A. dye B. dispersant C. salt D. mordant Correct Answer: Option D – mordant Explanation Aluminium hydroxide is used in the dyeing industry as a mordant. It combines with a dye and thereby fixes it in a...
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
Original price was: ₦1,000.00.₦300.00Current price is: ₦300.00.