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 241· Kinetic theory of matter and gas laws· JAMB
According to Graham's law, the ratio of the rate of diffusion of hydrogen to that of oxygen is [H = 1, O = 16]
Explanation and discussion
Question 242· Kinetic theory of matter and gas laws· JAMB
A gas occupies 100 cm³ at 2 atm and 300 K. Find its volume at 1 atm and 450 K.
Explanation and discussion
Question 243· Kinetic theory of matter and gas laws· JAMB
A gas occupies 300 cm³ at 27 °C. Find its volume at 87 °C if the pressure stays constant.
Explanation and discussion
Question 244· Kinetic theory of matter and gas laws· JAMB
A gas X diffuses at half the rate of methane (CH₄ = 16) under the same conditions. Find the relative molecular mass of X.
Explanation and discussion
Question 245· Metals and their compounds· JAMB
Which metal is the best conductor of electricity?
Explanation and discussion
Question 246· Metals and their compounds· JAMB
When potassium is dropped into water, it
Explanation and discussion
Question 247· Metals and their compounds· JAMB
Which of the following shows the metals in order of decreasing reactivity?
Explanation and discussion
Question 248· Metals and their compounds· JAMB
Iron pipes buried in the ground can be protected from rusting by attaching blocks of
Explanation and discussion
Question 249· Metals and their compounds· JAMB
Sodium is extracted industrially by
Explanation and discussion
Question 250· Metals and their compounds· JAMB
Steel is an alloy of iron and
Explanation and discussion
Question 251· Metals and their compounds· JAMB
Aluminium does not corrode readily in air because
Explanation and discussion
Question 252· Metals and their compounds· JAMB
Which metal will displace copper from a solution of copper(II) tetraoxosulphate(VI)?
Explanation and discussion
Question 253· Metals and their compounds· JAMB
Galvanising is the coating of iron with
Explanation and discussion
Question 254· Metals and their compounds· JAMB
Compounds of transition metals are often
Explanation and discussion
Question 255· Metals and their compounds· JAMB
Duralumin is used to build aircraft because it is
Explanation and discussion
Question 256· Metals and their compounds· JAMB
Alloys are generally
Explanation and discussion
Question 257· Metals and their compounds· JAMB
The main ore of aluminium is
Explanation and discussion
Question 258· Metals and their compounds· JAMB
Which metal is a liquid at room temperature?
Explanation and discussion
Question 259· Metals and their compounds· JAMB
When sodium hydroxide solution is added to a solution containing iron(III) ions, the precipitate formed is
Explanation and discussion
Question 260· Metals and their compounds· JAMB
Sodium is stored under paraffin oil because it
Explanation and discussion

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JAMB Chemistry questions

According to Graham's law, the ratio of the rate of diffusion of hydrogen to that of oxygen is [H = 1, O = 16]

A gas occupies 100 cm³ at 2 atm and 300 K. Find its volume at 1 atm and 450 K.

A gas occupies 300 cm³ at 27 °C. Find its volume at 87 °C if the pressure stays constant.

A gas X diffuses at half the rate of methane (CH₄ = 16) under the same conditions. Find the relative molecular mass of X.

Which metal is the best conductor of electricity?

When potassium is dropped into water, it

Which of the following shows the metals in order of decreasing reactivity?

Iron pipes buried in the ground can be protected from rusting by attaching blocks of

Sodium is extracted industrially by

Steel is an alloy of iron and

Aluminium does not corrode readily in air because

Which metal will displace copper from a solution of copper(II) tetraoxosulphate(VI)?

Galvanising is the coating of iron with

Compounds of transition metals are often

Duralumin is used to build aircraft because it is

Alloys are generally

The main ore of aluminium is

Which metal is a liquid at room temperature?

When sodium hydroxide solution is added to a solution containing iron(III) ions, the precipitate formed is

Sodium is stored under paraffin oil because it