The Octane number of Petrol This is a measure of the quality of petrol...
SCIENCE AND TECHNOLOGY
Crude Oil The chief source of hydrocarbons is crude oil or petroleum, which means...
Gravitational Force Gravitation simply refers to the force of attraction between all object that...
Space travel is a form of travel in which passengers enter space, the vast...
EFFICIENCY We stated that some of the energy produced by a machine is not...
ENERGY, POWER AND WORK We use energy in our daily activities. Both work and...
FORCE We can measure force easily using a spring balance. If an object is...
INTRODUCTION TO CRUIDE OIL AND PETROCHEMICALS We described non-renewable energy as energy that can...
TOOLS FOR CRAFTS AND ENGINEERING Engineering is a very wide field and involves the...
TOOLS FOR WORK What kinds of tools do you use at home? Are they...