Question

QIV) Write a brief description on the following appliances used at homes

(1) refrigerator
(2) LED bulbs and television
(3) Plasma television
on the basis of the following points -
1 The basic principle involved
2 The construction and working
3 its uses and harmful effects on the environment

Answer 1

A refrigerator does not cool items by lowering their original temperatures; instead, an evaporating gas called a refrigerant draws heat away, leaving the surrounding area much colder.Refrigerators and air conditioners bothwork on the principle of cooling through

Answer 2

refridgerator is shortly known as fridge 
>this cools the objects kept inside it 
>this works through electricity
>we can also use iceboxes to save electricity