What cycle does choloroflorocarbons(CFC’S) Belong to
Nitrogen cycle
Phosphorus cycle
Water cycle
Carbon cycle

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

Agas is contained in a thick walled balloon when the pressure changes from 1.21 atm to 2.52 the volume changes from 3.75 l to 1.72 l and the temperature change from 293k to blank k

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons