Substances that will kill bacteria and so they fight diseases caused by bacteria are called
Tranquillisers
Anti-cancer agents
Sedatives
Antibiotic
The reaction in which two solutions are mixed and an insoluble product is formed in called
Precipitation reactions
Decomposition reaction
Hydration reaction
Displacement reaction
Gases that are denser than air are collected by
Downward delivery
Upward delivery
Collection over water
Collection in a gas syringe
