JAMB Chemistry When air is passed through alkaline pyrogallol and then lime water, the gases left are
JAMB Chemistry Separation of mixture of solids by physical methods can be based on differences in the following except
JAMB Chemistry What mass of a divalent metal M (atomic mass = 40) would react with excess hydrochloric acid to liberate 224cm³ dry hydrogen gas measured at S.T.P?
JAMB Physics A particle travels in a circle of radius 20 cm at a speed that uniformly increases. If the speed changes from 5.0 ms⁻¹ to 6.0 ms⁻¹ in 2.0 s, find the…
JAMB Physics Radiations of wavelength 5000 Å fall on a metal plane whose work function is 1.9 eV. Calculate the stopping potential. [h = 6.63 × 10⁻³⁴ Js; c = 3 ×…
JAMB Physics A piece of ice of mass 100 g and at temperature 0°C is put in 200 g of water at 25°C. How much ice will melt as the temperature of the water reaches…