Science Facts Set-20

• Gold is extracted from gravel (alluvial sand) by MacArthur-Forrest process.
• The full form of IUPAC is International Union of Pure and Applied Chemistry.
• Auroras are natural light displays in the sky particularly in the polar regions.
• The first safety razor was invented by Jean-Jacques Perret.
• Red Kangaroo is the largest kangaroo in the world.

• Titan is the largest moon of Saturn.
• Styrene is an alkane present in crude oil.
• The largest species of Kiwi is the Great Spotted Kiwi. It has a height of 18 inches and it weighs 3.3 kg.
• Dogs have 20% smaller skulls and 30% smaller brains when compared to wolves.
• Panthera palaeosinensis is considered to be the ancestor of modern tigers.