Most natural diamonds have ages between 1 billion and 3.5 billion years. Diamond is the only gem with a single element. Do ...

CNG (Compressed Natural Gas) is a natural gas stored under high pressure. It is lighter than air and ideal for vehicles due ...

You must have heard about Mahatma Gandhi's Dandi March. Did you know that salt was such an important part in our struggle for freedom? What is salt? Salt, also commonly known as table salt, is a ...

A lead-acid battery is a type of rechargeable battery, invented in 1859. It uses lead plates (electrodes) submerged in ...