2022 - JAMB Chemistry Past Questions and Answers - page 1

Nucleons have protons and neutrons. The protons contain the positive charge of an atom and the neutrons are neutrally charged. Electrons, which are negatively charged, are located outside of the nucleus.

Alkanes consist of single-bonded carbon and hydrogen atoms and lack any other functional groups. 

The contact Process is an industrial method of producing sulfuric acid during which sulfur dioxide is converted into sulfur trioxide, by passing sulfur dioxide and oxygen over a solid vanadium(V) oxide catalyst.

• solubility of the salt in water
• heat stability of the salt

Carbon monoxide is a neutral oxide as it neither reacts with acids nor reacts with bases.

Carbon monoxide is produced when combustion reactions are not fully completed, either through lack of oxygen or due to low mixing.

mass number = number of neutrons + atomic number

number of neutrons = mass number - atomic number

=> 37 - 17 = 20

ZnS (Zinc Sulfide) as it emits a flash of light when struck by an alpha particle by a phenomenon known as Radio luminescence in which a flash of light is observed on the screen when acted upon by a radioactive substance.

Carboxylic acid is an organic compound containing a carboxyl functional group.

Carboxylic acids and Enols react with sodium bicarbonate to liberate carbon dioxide.

Adding salt to water lowers its freezing point and raises its boiling point.

Calcium Ammonium Nitrate or CAN (nitro-limestone or nitrochalk), is a widely used inorganic fertilizer.