1983 JAMB UTME Chemistry Past Questions

1983

Consecutive members of an alkane homologous serires differ by

1983

The flame used by welders in cutting metals is

1983

The alkanol obtained from the production of soap is

1983

X is a crystalline salt of sodium solution of X in water turns litmus red and produces a gas which turns lime water milky when added to sodium carbonate. With barium chloride solution, X gives hydrochloric acid. X is

1983

An unknown organic compound X has a relative molecular mass of 180. It is a colourless crystaline solid, readily soluble in water. X contains the elements C, H and O in the atomic ratio 1: 2:1. The compound has a sweet t…

1983

An unknown organic compound X has a relative molecular mass of 180. It is a colourless crystaline solid, readily soluble in water. X contains the elements C, H and O in the atomic ratio 1: 2:1. The compound has a sweet t…

1983

The three-dimensional shape of methane is

1983

Some copper (ll) sulphate pentahydrate (CuSO4 5H2O), was heated at 120 oC with the following results. Wt of crucible = 10.00 g; Wt of crucible + CuSO4 5H2O =14.98g; Wt of crucible + residue = 13.54 g. How many molecules…

1983

If an element has the electronic configuration 1s 2 2s2 2p3 3s2 3p4, it is

1983

In the reaction M + N P;∆H = + QKJ. Which of the following would increase the concentration of the product?

1983

The colour imparted to a flame by calcuium ion is

1983

Which of the following relationships between the pressure P, the volume V and the temperature T, represents an ideal gas behaviour?

1983

A mixture of common salt, ammonium chloride and barium sulphate can best be separated by

1983

An unknown organic compound X has a relative molecular mass of 180. It is a colourless crystaline solid, readily soluble in water. X contains the elements C, H and O in the atomic ratio 1: 2:1. The compound has a sweet t…

1983

A piece of burning sulphur will continue to burn in a gas jar of oxygen to give misty fumes which readily dissolved in water. The resulting liquid is

1983

How many isomeric forms are there for the molecular formula C3H6Br2?

1983

C2H5 - C = CH2CH3The correct name of the compound with the above structural formula is

1983

In the reaction Fe + Cu2+ \(\to\) Fe2+ + Cu,iron displaces copper ions to from copper. This is due to the fact that

1983

In which of the following processes is iron being oxidized?1 Fe + H2SO4 → FeSO4 +H22 FeSO4 + H2S → FeS + H2SO43 2FeCI2 + Cl2 → 2FeCl34 2FeCl3 + SnCl2 + → 2FeCl2 + SnCl4

1983

Solutions X, Y, and Z have PH values 3.0. 5. 0 and 9. 0 respectively. Which of the following statements is correct?

1 2 3