A reusable hot pack made of a supersaturated sodium acetate solution that crystallizes spontaneously once triggered by a metal piece releases heat. A balloon filled with hydrogen gas also releases ...

A 22-year-old woman was killed and three others were critically injured when a hydrogen gas cylinder exploded while inflating balloons at a crowded rural fair in Shaguna-Ghoragacha area of Nadia’s ...

A balloon filled with helium and one filled with hydrogen are ignited. Hydrogen provides a loud explosion and flame. He(g) + O 2 (g) → N.R. Light the candle on the end of the yardstick and lower the ...