Question

एक चीज ऐसी है जो सुखी हो तो 2 किलो , गीली हो तो 1 किलो और जल जाए तो 3 किलो

Answer 1

The thing is sulphur which is a chemical substance . And the conditions givrn in the question like when it is wet or dry it weighs differently it is just because of its chemical properties like this.

Answer 2

Sulphur has the specific gravity of 2 that means if we weigh a 2 kg wet (under water) it will have an apparent weight of 1 kg.All things weigh more when they burn as oxygen is added. Sulphur has an atomic number of 16.If it combines with oxygen (having atomic number 8) on a one-to-one basis,it will weigh 1.5 times as much, that means 2 kg will weigh 3 kg.Hope it helps....