Question

write short note on:
1) ELECTROPLATING
2)NOISE POLLUTION:- DEFINITION, CAUSES, EFFECT AND PREVENTION
3)CYLONE
4)ROLES OF VARIOUS HORMONES IN THE DEVELOPMENT OF HUMAN.

Answer 1

Answer:

• Electroplating is basically the process of plating a metal onto the other by hydrolysis mostly to prevent corrosion of metal or for decorative purposes. The process uses an electric current to reduce dissolved metal cations to develop a lean coherent metal coating on the electrode.
• Effects of Noise Pollution on Human Health
• Hearing loss: Constant exposure of human ears to loud noise that are beyond the range of sound that human ears can withstand damages the eardrums resulting in loss of hearing. ... Noise pollution hampers the sleep cycles leading to irritation and uncomfortable state of mind.
• In meteorology, a cyclone refers to any low pressure area with winds spiralling inwards. Cyclones rotate clockwise in the Southern Hemisphere and anti-clockwise in the Northern Hemisphere. ... Cyclones are also referred to as hurricanes and typhoons. They consist of the eye, eyewall and rainbands.
• The main hormones concerned with growth are pituitary growth hormone, thyroid hormone, the sex hormones testosterone and estrogen, and the pituitary gonadotropic (sex-gland-stimulating) hormones. ... The hormone decreases the amount of fat and causes protein to be laid down in muscles and viscera.