2024
a(i) Write the chemical formula of alumina. (ii) In the extraction of aluminium, state one compound that is used; I. to obtain alumina from Bauxite II. as solvent for alumina. (iii) Name the electrodes used in the ext…
See more
2024 WAEC SSCE Chemistry Past Questions
2024
(a) Write a balanced chemical equation for each of the following reactions: (i) ammonia gas with copper(II) oxide; (ii) ammonia gas with oxygen gas; (iii) aqueous potassium iodide with chlorine gas; (iv) iron with dilute…
See more
2024
a(i) Write balanced chemical equations for the production of lead(II) chloride by: I. direct combination of constituent elements; II. double decomposition; III. displacement reaction. (ii) State one condition that wou…
See more
2024
SECTION B a(i)Define each of the following terms; I. Deliquescence II. efflorescence (ii) Give one example of a substance that undergoes each of the processes in 2a(i) b(i)What is meant by ionization energy? (ii)T…
See more
2024
(a) What is an electrochemical cell? (b) State three differences between an electrochemical cell and an electrolytic cell. (c) Explain briefly what would be observed when powdered zinc is added to a solution of copper (I…
See more
2024
Consider the reaction represented by the following equation: x Al + yCl\(_2\) → z AlCl\(_3\)
See more
2024
Water pipes are produced from
See more
2024
The oxidation number of iron, in its free state is
See more
2024
How many isomers can be formed from a compound with molecular formula C\(_5\)H\(_{12}\) ?
See more
2024
Tetraoxosulphate (VI) acid is considered as a heavy chemical because
See more
2024
Which of the following compounds is formed by the oxidation of ethanol?
See more
2024
Which of the following is a monomer of polythene?
See more
2024
The main function of limestone in the blast furnace during the extraction of iron is to
See more
2024
An atom of an element in the ground state contains 8 valence electrons. The element is considered as a
See more
2024
When an element exists in two or more forms in the same physical state, it exhibits
See more
2024
How many covalent bonds are formed by Nitrogen?
See more
2024
The metallic bonding in aluminium is strong because of large number of
See more
2024
The hardest form of carbon is
See more
2024
When s and p block elements react, the bond formed is
See more
2024
The electron configuration of \(_{29}\) Cu is
See more