Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.
When a bottle of Coca-Cola is opened, bubbles of evolve. The gas is?
hydrogen
carbon monoxide
carbon dioxide
sulphur oxide
chlorine
Correct answer is C
No explanation has been provided for this answer.
An element X has 127 neutrons and 82 electrons.
Its atomic number is?
209
105
45
82
Correct answer is D
An atom that has equal number of protons and electrons is called a neutral atom.
With 82 electrons, the atomic number is also 82
Which of the following is true concerning the properties of benzene and hexane?
Both undergo substitution reaction
Both undergo addition reaction
Both are solids
Both can decolourized bromine water
Correct answer is A
Hexane and benzene can both partake in substitution reactions.
Terylene is synthesized from ethane- 1, 2-diol and benzene - 1, 4-dicarboxylic acid by?
addition reaction
condensation reaction
elimination reaction
substitution reaction
Correct answer is B
No explanation has been provided for this answer.
An example of aromatic compound is?
C6H13OH
C6H13CI
C6H5OH
C6H14
Correct answer is C
No explanation has been provided for this answer.