Which is the main constituent in air ?
While standing on railway platform and heating the whistle of an engine coming towards us , we hear the sound increasing; bit when the engine is receding from us it appears to fall why ?
What is flash point ?
Why do we hear thunder after seeing a flash of lightning ?
Why are leaves of trees green ?
Explain how buffer works?
which gas is called laughing gas?
What is glacial acetic acid?
Why ph scale range is 14? Why it is not less or not greater than 14? Solution of hcl or hydrogen containing liquid has a ph. But if the solution is kmno4 here nothydrogen power does it ph?
What is ignition point ?
What happens when the excess of stannous chloride is not removed
Explain about Match Industry ?
How is measurement of ph made?