by Sunday | Sep 14 | Chemistry JAMB
A. lubricating oil B. coal C. bitumen D. diesel oil Correct Answer: Option B – coal Explanation When we burn coal on a fire, the bonds break apart and the energy is released in the form of heat. Coal contains about half as much energy per kilogram as cleaner...
by Sunday | Sep 14 | Chemistry JAMB
A. heating may not be required before the reaction takes place B. the reaction is controllable even at a high temperature C. the reaction produces large quantity of oxygen D. the reaction takes place more rapidly at a lower temperature Correct Answer: Option D –...
by Sunday | Sep 14 | Chemistry JAMB
A. are both metals B. belong to the same group C. belong to the same period D. are positioned diagonally to each other Correct Answer: Option D – are positioned diagonally to each other
by Sunday | Sep 14 | Chemistry JAMB
A. carbon-14 B. phosphorus-32 C. cobalt D. iodine-131 Correct Answer: Option C – cobalt
by Sunday | Sep 14 | Chemistry JAMB
A. 1.20 x 10²² B. 2.4 x 10²² C. 1.51 x 10²² D. 3.02 x 10²² Correct Answer: Option C – 1.51 x 10²²
by Sunday | Sep 14 | Chemistry JAMB
A. 0.40 moldm−³ B. 0.50 moldm−³ C. 0.05 moldm−³ D. 0.30 moldm−³ Correct Answer: Option B – 0.50 moldm−³