by Sunday | Mar 19 | Chemistry JAMB
A. less than 3.4 B. greater than 3.4 C. unaltered D. the same as that of the pure water Correct Answer: Option A – less than 3.4 Explanation The addition of conc HCL makes the solution more acidic and the solution falls below the original...
by Sunday | Mar 19 | Chemistry JAMB
A. Trigonal planar B. Octahedral C. Square planar D. Tetrahedral Correct Answer: Option A – Trigonal planar Explanation The ammonia molecule has a trigonal pyramidal shape with the three hydrogen atoms and an unshared pair of electrons attached to the nitrogen...
by Sunday | Mar 19 | Chemistry JAMB
A. NO2 B. NO C. N2O D. Cl2 Correct Answer: Option C = N2O Explanation Nitrogen(I)Oxide rekindles a brightly glowing splinter but extinguishes a feebly glowing one which is not hot enough to decompose the gas to liberate...
by Sunday | Mar 19 | Chemistry JAMB
The volume occupied by 1.58g of a gas at S.T.P is 500cm³. What is the relative molecular mass of the gas? [ G.M.V at S.T.P = 22.4dm³] A. 28 B. 32 C. 44 D. 71 Correct Answer: Option D = 71 Explanation 500cm³ of the gas weighed 1.58 : 22400cm³ of the gas weight [22400 X...
by Sunday | Mar 19 | Chemistry JAMB
A. 3 B. 4 C. 15 D. 31 Correct Answer: Option A = 3 Explanation The element is Phosphorus in group 5 with valencies of 3 and 5.
by Sunday | Mar 19 | Chemistry JAMB
A. Nitrogen (I) Oxide and Water B. Ammonia and Oxide C. Nitrogen and Water D. Nitrogen (IV) Oxide and Water Correct Answer: Option A = Nitrogen (I) Oxide and Water Explanation NH4NO3 Ammonium Trioxonitrate(V), unlike all other metallic trioxonitrates(v), decomposes on...