by Sunday | Apr 21 | Chemistry NECO
A. Ba(NO3)2(aq) then HNO3(aq). B. HCl(aq) then Ba(NO3)2(aq). C. HCl(aq) then AgNO3(aq). D. HNO3(aq) then fresh FeSO4(aq). E. HNO3(aq) then AgNO3(aq). Correct Answer: Option E – HNO3(aq) then AgNO3(aq).
by Sunday | Apr 21 | Chemistry NECO
A. NaCl(s) is non-ionic but NaCl(aq) is ion B. NaCl(aq) contains mobile electrons, where absent in NaCl(s). C. NaCl(aq) contains mobile ions which Nacl,) does not contain. D. NaCl(s) ionizes partiality while NaCl(aq) iodizes completely. E. NaCl(s) decomposes when...
by Sunday | Apr 21 | Chemistry NECO
A. conversion. B. elimination. C. oxidation. D. reduction. E. substitution. Correct Answer: Option C – oxidation
by Sunday | Apr 21 | Chemistry NECO
A. change in amount of precipitate formed B. change in equilibrium constant C. change in intensity of colour D. change in pH values. E. change in total gas pressure Correct Answer: Option B – change in equilibrium...
by Sunday | Apr 21 | Chemistry NECO
A. m = I/it B. m α it C. Q = it D. Q α I/it E. Q α it Correct Answer: Option B – m α it
by Sunday | Apr 21 | Chemistry NECO
An experiment to test the conductance of 0.1M solutions of the substances listed below was performed. I ammonia II ammonium chloride III ethanoic acid IV sodium ethanoate A. I and II B. I and III C. I and IV D. II and III E. II and IV Correct Answer: Option B –...
by Sunday | Apr 21 | Chemistry NECO
A. adding an acid. B. adding an alkali. C. dissolving in water. D. exposing to air. E. heating. Correct Answer: Option E – heating
by Sunday | Apr 21 | Chemistry NECO
A. allotropy. B. Brownian movement. C. diffusion. D. Tyndal effect. E. vaporization. Correct Answer: Option A – allotropy
by Sunday | Apr 21 | Chemistry NECO
A. butene. B. butyne. C. ethene. D. propene. E. propyne Correct Answer: Option A – butene Explanation (CH2)x=56 (12+2)x=56 14x=56 x=56/14 x=4 Hence, the empirical formula is (CH2)×4 =...
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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