JAMB Chemistry questions

443 questions with answers and explanations. Tap an option to check yourself.

All topics Acids, bases and salts · 32 Air · 21 Atomic structure and bonding · 33 Chemical combination · 31 Chemical equilibrium · 21 Chemistry and industry · 18 Electrolysis · 22 Energy changes · 22 Environmental pollution · 17 Kinetic theory of matter and gas laws · 27 Metals and their compounds · 24 Non-metals and their compounds · 23 Organic compounds · 43 Oxidation and reduction · 22 Rates of chemical reaction · 22 Separation of mixtures and purification · 24 Solubility · 20 Water · 21

Question 321· Organic compounds· JAMB
In the laboratory, ethyne is prepared by adding water to
Explanation and discussion
Question 322· Organic compounds· JAMB
The conversion of ethene into polythene is an example of
Explanation and discussion
Question 323· Organic compounds· JAMB
The general formula of alkanes is:
Explanation and discussion
Question 324· Organic compounds· JAMB
Ethanol warmed with excess acidified potassium heptaoxodichromate(VI) is oxidised to
Explanation and discussion
Question 325· Organic compounds· JAMB
The functional group of the alkenes is
Explanation and discussion
Question 326· Organic compounds· JAMB
Ethyne (acetylene) is used in
Explanation and discussion
Question 327· Organic compounds· JAMB
The homologous series with the general formula CₙH₂ₙ₋₂ is the
Explanation and discussion
Question 328· Organic compounds· JAMB
Nylon is formed by
Explanation and discussion
Question 329· Organic compounds· JAMB
Which of the following polymers is made by condensation polymerisation?
Explanation and discussion
Question 330· Organic compounds· JAMB
The IUPAC name of CH₃CH₂CH₂OH is
Explanation and discussion
Question 331· Organic compounds· JAMB
When sodium is added to ethanol, the gas given off is
Explanation and discussion
Question 332· Organic compounds· JAMB
The fermentation of glucose produces
Explanation and discussion
Question 333· Organic compounds· JAMB
Cracking is the process of
Explanation and discussion
Question 334· Organic compounds· JAMB
Ethene decolourises bromine water because it is:
Explanation and discussion
Question 335· Oxidation and reduction· JAMB
Which change is a reduction?
Explanation and discussion
Question 336· Oxidation and reduction· JAMB
In terms of electron transfer, oxidation is
Explanation and discussion
Question 337· Oxidation and reduction· JAMB
Find the oxidation number of chromium in K₂Cr₂O₇.
Explanation and discussion
Question 338· Oxidation and reduction· JAMB
A metal high in the electrochemical series
Explanation and discussion
Question 339· Oxidation and reduction· JAMB
In the reaction 2FeCl₂ + Cl₂ → 2FeCl₃, the oxidising agent is
Explanation and discussion
Question 340· Oxidation and reduction· JAMB
In the reaction Cl₂ + 2NaOH → NaCl + NaOCl + H₂O, chlorine is
Explanation and discussion

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JAMB Chemistry questions

In the laboratory, ethyne is prepared by adding water to

The conversion of ethene into polythene is an example of

The general formula of alkanes is:

Ethanol warmed with excess acidified potassium heptaoxodichromate(VI) is oxidised to

The functional group of the alkenes is

Ethyne (acetylene) is used in

The homologous series with the general formula CₙH₂ₙ₋₂ is the

Nylon is formed by

Which of the following polymers is made by condensation polymerisation?

The IUPAC name of CH₃CH₂CH₂OH is

When sodium is added to ethanol, the gas given off is

The fermentation of glucose produces

Cracking is the process of

Ethene decolourises bromine water because it is:

Which change is a reduction?

In terms of electron transfer, oxidation is

Find the oxidation number of chromium in K₂Cr₂O₇.

A metal high in the electrochemical series

In the reaction 2FeCl₂ + Cl₂ → 2FeCl₃, the oxidising agent is

In the reaction Cl₂ + 2NaOH → NaCl + NaOCl + H₂O, chlorine is