@Sulphur is said to exhibit allotropy. This means that it:
Exists in more than one solid form
Has atoms with different numbers of neutrons in the nucleus
Does not conduct electricity, even when molten

@Which substance can be used to preserve food?
Sulphur dioxide
Hydrogen sulphide
Flowers of sulphur

@What happens to sulphur when it is heated with a blue bunsen flame?
It changes colour
It sublimes
It's immediately converted to sulphur dioxide

@Sulphur is obtained from the ground by the:
Frasch process
Contact process
Lacq process

@Sulphur burns in air to form:
Sulphur dioxide
Sulphur monoxide
Sulphur trioxide

@For the gas sulphur dioxide, which of the following is incorrect?
It is insoluble in water
It turns moist universal indicator paper red
It is heavier than air

@Sulphuric acid is made by the:
Contact process
Frasch process
Electrolysis

@A sample of sulphur is gradually heated from room temperature. Which of the following is in the correct order for the colour changes that take place?
Yellow, pale yellow, red & black
Pale yellow, yellow, black & red
Yellow, orange, red & brown

@Which one of the following is sulphur not used for?
Making natural rubber 'softer' for tyres
Making insecticides
Making matches

@What parts of the world are sulphur deposits likely to be found in?
Volcanic regions
Mountainous areas
Close to the sea and river deltas