When calcium carbide is sprayed on fruits, it reacts with moisture & produces acetylene gas, which is quite similar in action to the natural ripening agent ethylene and makes ripening fast,but using calcium carbide is inadvisable as it has carcinogenic properties.
How does Calcium Carbide help fruits ripen?
Bananas contain naturally-occurring radioactive potassium-40 which makes them naturally radioactive.
But it is present in such small amounts and it does not cause any harm to the body. So don’t be afraid to eat bananas.
Dolphins and whales are conscious breathers , so when they rest, they just let one half of their brains sleep
and keep the other half awake, allowing them to keep one eye open and watch out for predators.
The magnetic fields of the Earth are known to be caused by the rotational forces created by the liquid iron layer
which is thought to be present in large amounts in the earth’s core. Convection caused by heat radiating from the core,along with the rotation of the Earth,causes the liquid iron to move in a rotational pattern.
The cracking sound of the whip is heard when the tip of the whip travels faster than speed of sound in air,creating a miniature sonic boom which gives out a cracking sound ,much like what happens when a jet plane travels faster than the speed of sound
.What causes the cracking sound of a whip?
Apple seeds contain a cyanide compound.Our body can handle small doses of naturally occurring poison
so it won’t have an effect unless you eat a huge number of seeds, and even then the seeds are covered in a protective coating which keeps the cyanide compound safe inside. However, It is safer to refrain from eating apple seeds.
Although polar bears appear white, their fur actually is pigment-free and transparent with a hollow core .
The particles inside these cores reflect and scatter visible light making them appear white.
The most powerful lasers are made with Neodymium-doped Yttrium crystals. In a fraction of a second, they produce more power than the whole United States.
A Spider moves its legs using hydraulic pressure that is built in them by its heart.This Hydraulic pressure is no longer present after it dies ,So the fluid settles and the legs naturally reset to the curled up position.
Why do spiders’ legs curl up after they die?
The unpleasant smell of garlic is caused by sulphur compounds contained in it.
The pleasant smell we get after a rain is caused by a bacteria called Actinomycetes
Before an earthquake, ponds and canals may give off a strange smell. This is caused by the release of gases underground. The temperature of ground water can also become warmer.
Water usually contains many gases and minerals that are naturally dissolved in it. As the water in an ice tray
starts freezing from the outside, the dissolved gasses and minerals move towards the center of the ice cube.
These entrapped air bubbles and minerals make the center of the ice cube appear cloudy and white.
Why are ice cubes cloudy in the inside?
An egg shell is made of calcium carbonate.The shell makes up 9-12% of an egg’s total weight,
and contains tiny pores that allow oxygen in and carbon dioxide and moisture out.
Babies are born with pink lungs but they darken in color as we breathe in polluted air.
Although a full moon seems bright, it is actually reflecting just 7% of the sun’s rays.
During dry periods, water becomes a scarce resource not only to animals but also to plants.Water evaporates from a plant through transpiration which mainly takes place in leaves.Therefore trees shed their leaves
at the beginning of a dry period ,to lessen the amount of water that it loses through transpiration.