Khabardar: Liquid Nitrogen Gas se aik bachy ki mout waqya ho gai. Yeh bhut he Khtarnak cheeze hai bachy ne liquid nitrogen gas pee li seedha muh se laga ker yeh gas barf jamane aur compressor mn fill ki jati hai. AC aur fridge k liye is ka liye is ka darja hararat manfi 200°…