Answers Pig-iron is brittle because it contains Pig-iron is brittle because it contains A. a high percentage of carbon as impurity B. calcium trioxosilicate (IV) C. unreacted haematite D. undecomposed limestone Correct Answer: Option A Explanation
Answers Quels aspects du programme avez-vous…? Quels aspects du programme avez-vous…? A. retenus B. retenues C. retenu D. retenez Correct Answer: Option A Explanation Read More
Answers If Un = n(n2 + 1), evaluate U5 – U4 If Un = n(n2 + 1), evaluate U5 – U4 A. 18 B. 56 C. 62 D. 80… Read More
Answers The bulk of local government revenue in Nigeria is derived from The bulk of local government revenue in Nigeria is derived from A. the Federation account B. state allocations… Read More
Answers In the redox reaction 2Fe2+ + CI2 → 2Fe 3 + + 2Cl In the redox reaction 2Fe2+ + CI2 → 2Fe 3 + + 2Cl A. Cl2 is reduced because… Read More
Answers Define (i) proton number; (ii) nucleon number; (iii) isotopes. (b) A nuclide (^A_ZX) emits… (a) Define (i) proton number; (ii) nucleon number; (iii) isotopes. (b) A nuclide (^A_ZX) emits (beta)-particle to form… Read More