The preserved remains of animals or plants or other organisms from the distant past are called fossils. These fossils tell us about many extinct... View Article
Antibiotics are medicines produced by certain micro-organisms to kill other disease-causing micro-organisms. Antibiotics are antimicrobial... View Article
Answer: (ii) Streptomycin Antibiotics are antimicrobial drugs obtained from other organisms such as moulds, fungus, and soil bacteria to combat... View Article
Answer: A transformer is a device used in the power transmission of electric energy. The transmission current is AC. It is commonly used to... View Article
a) Wavelength: The distance between two consecutive compressions or two consecutive rarefactions is known as the wavelength. Its SI unit is metre... View Article
The live wire carries the current to the appliance. The live wire is also called hot wire. Live wire is brown or red in colour. This is the wire... View Article
Residual volume is always greater than tidal volume. Tidal volume is the volume of air normally inspired or expired in one breath without any... View Article
Mass per cent is a way of expressing a concentration or describing the component in a particular mixture. The solution composition can be... View Article
Preparation of the soil is the first step before growing of the crop. It helps to turn the soil and loosen it to allow the roots to penetrate... View Article
