What do you mean by UV cut off limit
Answer / umang
UV limt =200 to 400 nm
Vis limt= 400 to 1200
IR limt = 400 to 4000 cm-
| Is This Answer Correct ? | 3 Yes | 2 No |
In the calculation of calorific value of any fuel why the latent heat of vap. of water is taken as 587 kj/mol whereas actually it is 540kj/mol?
Why ph scale range is 14? Why it is not less or not greater than 14?
Explain the Valency?
We see the sun before it rises above the horizon in the morning. Why?
What materials are needed in making glass ?
Why is dew formed more readily on clear nights than on cloudy ones ?
What variety of carbon is used for refining purposes ?
What is density of a liquid?
Difference between an Atom and an Ion ?
What is Poling ?
what is the formula of diesel,petrol & CNG too?
Why is sodium preserved in kerosene oil ?