by Sunday | Dec 27 | Chemistry WAEC
A. 2 – methyl but – 1 – ene B. 2 – methyl but – 2 – ene C. 3 – methyl but – 1 – ene D. 3 – methyl but – 2 – ene Correct Answer: Option C = 3 – methyl but – 1 – ene Explanation...
by Sunday | Dec 27 | Chemistry WAEC
A. 1 B. 2 C. 3 D. 4 Correct Answer: Option D = 4 Explanation Nitrogen has three unpaired electrons and one lone pair of electrons; therefore, it can form three covalent bonds and one coordinate bond. E.g ammonium...
by Sunday | Dec 27 | Chemistry WAEC
A. Covalent bond B. Hydrogen bond C. Ionic bond D. Metallic bond Correct Answer: Option B – Hydrogen bond Explanation Hydrogen bond is an intermolecular force which arises when hydrogen is covalently linked to elements like nitrogen, oxygen and...
by Sunday | Dec 27 | Chemistry WAEC
A. silver B. gold C. lead D. mercury Correct Answer: Option C – lead Explanation The reactivity series allows us to predict how metals react. A more reactive metal displaces a less reactive metal from a compound. Lead is more reactive metal than copper hence,...
by Sunday | Dec 27 | Chemistry WAEC
A. 22.2% B. 14.8% C. 7.4% D. 3.7% Correct Answer: Option B = 14.8% Explanation . % of C in Ca(HCO3)2 Molar mass of Ca(HCO3)2 = 40+(1+12+(16*3))2 =40+(13+48)2 =40+122 =162 C/Ca(HCO3)2 x 100 =12 * 2/162 * 100...
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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