2022 JAMB Chemistry Past Questions CBT

The sub-atomic particles located in the nucleus of an atom are

The IUPAC nomenclature of the structure is?

SO₂ + O₂ →  2SO₃

In the reaction above, the most suitable catalyst is

In the preparation of salts, the method employed will depend on the

The following non-metals form strongly acidic oxides with oxygen except

How many neutrons are present in atom with mass number and atomic number 37 and 17 respectively?

The sulphide that is commonly used in coating electric fluorescent tubes is

An organic compound which liberates carbon(IV) oxide from trioxocarbonate(IV) solution is likely to be

Addition of sodium chloride to water to form a solution would lead to?

A chemical widely used as a fertilizer is?

On the basis of the electrochemical series, which of these ions will show the greater tendency to be discharged at the cathode in an electrolytic cell

Addition of charcoal to the filter bed of sand during water treatment for township supply is to

Using the metal activity series, the metal that can liberate hydrogen gas from steam is

An organic compound with fishy smell is likely to have a general formula

\( \scriptsize N_2O_4 \leftrightharpoons 2NO_2 \:\:\:\;\;\;\; \left(\scriptsize \Delta = \:-ve \right) \)

From the reaction above, which of these conditions would produce the highest equilibrium yield for N₂O₄

Zn + 2HCl → ZnCl₂ + H₂

What happens to zinc in the above reaction?

An organic functional group which can likely decolorize ammoniacal silver nitrate is

A colored gas that is known to be poisonous and can readily damage the mucous lining of the lungs is

In order to electroplate spoon with silver, the arrangement of the electrolytic cell is

An organic compound which decolorizes bromine water is likely to be

Crude petroleum is converted to useful products by the process of

An organic compound contains 69% carbon, 15.3% hydrogen and 30.7% oxygen. Calculate the empirical formula

[C = 12, H = 1, O = 16]

\( \scriptsize 2H_2 \: + \: O_2 \rightarrow 2H_2O\)

From the equation above, calculate the volume of unreacted oxygen gas if a mixture of 50 cm³ of hydrogen and 75 cm³ of oxygen are evolved

In which of the following will hydrogen form ionic compound?

If the volume of a given mass of a gas at 0ºC is 29.5cm³. What will be the volume of the gas at 15ºC, given that the pressure remains constant.

The reactions below represent neutralization reaction, in which of them is the value of ΔH highest?

The pollutant usually present in a city which generates its electricity from coal is

The dehydration of CH₃CH₂CH₂CH₂OH will give

When heat is absorbed during a chemical reaction, the reaction is said to be

Which of the following best represent solid gas mixture?

H⁺ + OH^– → H₂O

The equation above illustrates

Electrons enter into orbitals in order of increasing energy as exemplified by

Wrought iron is obtained by heating cast iron in a furnace with

In the extraction of iron, hot air is introduced into the blast furnace through

How many bonding pairs are present in carbon(IV) oxide?

2-methylprop-1-ene is a structural isomer of

Alkanes are used mainly

What volume (dm³) of water will be added to 10 dm³ of 2.0 mol/dm³ HCl acid solution to give a final solution of 0.5 mol/dm³?

The above table shows the compositions of the atmosphere of planet X. Which of these gases are present in higher percentages on earth?

Hard water is water with high concentrations of dissolved ions, in particular calcium and