by Sunday | Oct 11 | Chemistry JAMB
A. NO B. NO2 C. N2O D. N2O4 Correct Answer: Option A – NO Action of dilute (50% of HNO3) will give 8HNO3(l) + 3Cu(s) → 3Cu(NO3)2(aq) + 2NO(g) + 4H2O(l) Whereas Action of Conc HNO3 will give 4HNO3(l) + Cu(s) → Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l) The copper nitrate...
by Sunday | Oct 11 | Chemistry JAMB
A. absorb impurities B. catalyze the reaction C. solidify the gas D. dry the gas Correct Answer: Option B – catalyze the reaction
by Sunday | Oct 11 | Chemistry JAMB
A. CCl4 B. CHCl3 C. CH2Cl2 D. CH3Cl Correct Answer: Option B – CHCl3
by Sunday | Oct 11 | Chemistry JAMB
A. Benzene B. Alkynes C. Alkenes D. Alkanes Correct Answer: Option D – Alkanes Explanation: Alkenes can decolourise bromine water, but alkanes cannot. The slideshow shows this process. Other addition reactions of alkenes: Hydrogen can be added to a C=C double...
by Sunday | Oct 11 | Chemistry JAMB
A. trichloromethane and tetrachloromethane B. chloroethene and dichloroethene C. trichloroethene and tetrachloroethene D. chloroethane and dichloroethene Correct Answer: Option C – trichloroethene and tetrachloroethene