DO YOU KNO

WHY DOES MILK OVERFLOW WHEN BOILED BUT WATER DO NOT?

Milk is not a simple liquid–it contains tiny globules of fat and casein which are not dissolved but suspended in water. On heating milk, there occurs a separation of constituents and some other elements like cream, being lighter, and float up. After sometime, a membrane-like film containing cream and casein is formed. When milk begins to boil, the heat energy is used for conversion of water into steam. As a result, the pressure below the film increases suddenly and the rising bubbles of steam makes the milk overflow. On heating water, no such film is formed and the bubbles of steam formed by boiling escape easily without resistance. Hence, water does not overflow on boiling.


WHAT IS THE MAGNETIC HILL IN LADAKH?

The Magnetic Hill is located on the Leh-Kargil-Batalik National Highway, about 30 kms from Leh, at a height of 14,000 ft above sea level. The hill supposedly has magnetic properties which attracts metallic objects, making vehicles move up at a speed of about 20 kmph with their engines off. However, many feel that it’s a mere optical illusion and nothing to do with magnetic fields, electricity or unknown forces working along mysterious lines.


ARE HOME LIZARDS POISONOUS?

The home lizard or gecko, found in most homes, is not poisonous at all. It only checks insect population. The only poisonous lizard in the world is the Heloderma, also called as Gila monster and beaded lizard. It’s found in large numbers near Gila River in South-western United States.