Science Facts Set-23

• Acoustics is the branch of science which deals with the study of different kinds of sound.
• Zinc Sulphate (also known as white vitriol) is prepared by reacting Zinc with aqueous Sulphuric acid.
• Sambars are large Asian deers having an average weight of 162-260 kg.
• Emulsion is the dispersion of small droplets of one liquid in another liquid. (The two liquids are immiscible in nature).
• The nature of lightning was discovered by Benjamin Franklin, an American Scientist.

• The SI unit of sound pressure is pascal (Pa).
• Alpha Particles are positively charged particles which have two protons and two neutrons.
• The density of salt water is greater than the density of pure water.
• Ammeter is the instrument used to measure electric current.
• Supersonic jets are jets that are able to travel faster than the speed of sound.