What are green crackers ?? Are they safe and pollution free .

Green crackers are a type of firework that are designed to reduce pollution and noise compared to traditional firecrackers.
Use of alternative chemicals such as potassium nitrate and aluminium instead of magnesium and barium as well as carbon instead of arsenic and other harmful chemicals.
While regular crackers emit about 160 decibels of sound, green crackers emission rate is limited to 110-125 decibels. Green crackers are also believed to cause 30% less particulate matter pollution compared to traditional crackers.
2018, SC banned all conventional crackers and allowed the bursting of green crackers that did not use barium salts in their production.
The Chandigarh UT administration has announced that only green crackers approved by the National Environmental and Engineering Research Institute (NEERI) will be allowed on Diwali and Gurpurb , licensees will only be allowed to sell green crackers certified by NEERI.