by Sunday | Sep 14 | Chemistry JAMB
A. atomic weights B. isotopic weights C. molecular weights D. atomic numbers Correct Answer: Option D – atomic numbers Explanation Elements in the periodic table are arranged according to their atomic number (proton number). Electronegativity increase from left...
by Sunday | Sep 14 | Chemistry JAMB
A. Elements in the same period have the same number of valence electrons B. The valence electrons of the elements in the same period increase progressively across the period C. Elements in the same group have the same number of electron shells D. The non-metallic...
by Sunday | Sep 13 | Chemistry JAMB
I. Nature of solvent II. Nature of solute III. Temperature IV. Pressure A. I, II, III and IV B. I and II only C. II only D. I, III and IV only Correct Answer: Option D – I, III and IV only
by Sunday | Sep 13 | Chemistry JAMB
A. collisions are perfectly elastic B. forces of repulsion exist C. forces of repulsion and attraction are in equilibrium D. collisions are inelastic Correct Answer: Option B – collisions are perfectly elastic
by Sunday | Sep 13 | Chemistry JAMB
A. Al and Mg B. Zn and Fe C. Zn and Pb D. Pb and H Correct Answer: Option A – Al and Mg Electrochemical series table
by Sunday | Sep 13 | Chemistry JAMB
A. CH B. CH2 C. CH3 D. CnHn Correct Answer: Option B – CH2