From what was Uranium isolated ?
From what raw material is paper manufactured ?
Why do clothes dry quicker in wind than in still air ?
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 the colour of diamond, when pure ?
When a glass rod is heated gradually and suddenly dipped in cold water, it cracks. What is the reason????????? When a cool glass rod is suudenly heatd, it cracks. Why?????????
Why are leaves of trees green ?
How is cement manufactured ?
Why do you require laboratory temperature for viscosity determination?
What is dextro-rotatory and levo-rotatory?
Why does a diamond cut glass?
What is the basicity/acidity of na2co3
However ozone is heavier than oxygen still ozone is up there in sky why?