by Sunday | Aug 23 | Chemistry WAEC
A. Fractional distillational B. Recrystallization C. Filtration D. Paper chromatography E. Evaporation Correct Answer: Option D – Paper chromatography
by Sunday | Aug 23 | Chemistry WAEC
A. H2NH3O2 B. CO2NH3O2 C. H2CH4N2 D. CO2H2N2 E. CH4O2CO2 Correct Answer: Option D – CO2H2N2
by Sunday | Aug 23 | Chemistry WAEC
A. prophlmethanoate B. ethylethanoate C. methylpropanoate D. propylethanoate E. ethylpropanoate Correct Answer: Option E – ethylpropanoate
by Sunday | Aug 23 | Chemistry WAEC
A. Cryolite B. Bauxite C. Potash alum D. Kaolin E. Mica Correct Answer: Option A – Cryolite
by Sunday | Aug 23 | Chemistry WAEC
A. 2 B. 5 C. 7 D. 8 E. 13 Correct Answer: Option D – 8
by Sunday | Aug 23 | Chemistry WAEC
A. is defined by the quantum number 1 = O B. is of higher energy than the 3d orbital C. contains a maximum of two electrons D. is spherical about the nucleus E. is filled before the 4p orbital Correct Answer: Option B – is of higher energy than the 3d...