OXIDATION AND REDUCTION
Oxidation and reduction Oxidation is the addition of oxygen or removal of...
Oxidation and reduction Oxidation is the addition of oxygen or removal of...
Extraction of Iron Raw materials used Raw materials Source Uses Limestone/CaCO3 Buchwa/...
Global Warming Global warming is the gradual heating of the earth that...
Biogas Is a renewable source of energy that is made mostly of...
Sulphuric Acid Production The Contact Process Raw materials used Oxygen from air...
Production of Ethanol Fermentation of sugar or maize meal solution Fermentation is...
Introduction Rate of a reaction: change in concentration of reactants or products per...
ZIMSEC Biology Practical Paper 4 Tips & Hints 2 Hours 30 minutes...