A. 20 B. 25 C. 60 D. 75 Correct Answer: Option B - 25 Explanation Let the relative abundance of…
A. electrovalency B. electron affinity C. electropositivity D. electronegativity Correct Answer: Option D - electronegativity
A. spherical B. elliptical C. spiral D. circular Correct Answer: Option A = spherical
A. 2 valence electrons B. 3 valence electrons C. 7 valence electrons D. 8 valence electrons Correct Answer: Option D…
A. 5s B. 20s C. 40s D. 60s Correct Answer: Option C - 40s Explanation Relative molecular mass of CH4…
A. have no definite shape B. have little force of attraction between them C. can collide with one another in…
A. 0°C B. -100°C C. -273°C D. -373°C Correct Answer: Option C = -273°C
A. an increase in the composition of one of the substance B. a change in the volume of the reactants…
A. evaporation B. distillation C. crystallization D. sublimation Correct Answer: Option D - sublimation
A. passed over heated copper (II) oxide B. bubbled through water C. bubbled through concentrated tetroxosulphate (VI) acid D. bubbled…