Scientific Explanation of common phenomena GK for all type of competitive examination like SSC railway group D IBPS UPSC opsc ossc

It is dangerous to sleep in an unventilated with fire burning inside


The filament of an electric bulb is made up of tungston


Water kept in an earthen pitcher becomes cold



A sliced Apple when exposed to air turns brown after sometimes




The freezing compartment inside a refrigerator is at the top

The copper vessel left in the air for long time turns green


A wick in a store keeps burning continuously as kerosene rises in the wick


The sky appears blue because the light of the sun is spread scattered by dust particle


Food is cooked quickly in a pressure cooker

In mountainous region the atmospheric pressure is less than it is at sea level


When ice floating in a glass of water melts the level of water remains unchanged

A man weight more at the poles than at the equator

Standing in double decker buses particularly on the upper floor is not allowed



The boiling point of seawater will be more than the boiling point of pure water


An ordinary clock loses time in summer

Whenever there is water loss from the body secretion of saliva is reduced resulting in dryness of mouth and stimulating the sensation of thirst


A swimmer just out of river feels cold particularly if it is windy