Question
Ozone layer which absorbs and scatters the solar
ultraviolet radiation is present in which layer of atmosphere?Solution
In the upper parts of the stratosphere the temperatures are almost as higher as those near the earth's surface, which is due to the fact that the ultra violet radiation from the sun is absorbed by ozone in this region.
In nuclear reactor, heavy water is used as –
Deficiency of which of the following elements is responsible for weakening of bones?
1. CalciumÂ
2. Phosphorus
3. Nitrogen
...
When chlorination of dry slaked lime takes place, _________ will form as the main product.
Which type of wave does not require a medium for propagation?
The height of a geo-stationary satellite from the Earth's surface is approximately :
The washing machine works on the principle of -
Alkali metals have ______.
I. low melting points
II. low densities
The (O-H) bond in CH3OH is which type of bond?
What is the maximum value of deforming force up to which a material shows elastic property and above which the material loses it?
Sphagnum is an important bryophyte. Consider the following statements about it:
- It is a chief constituent of peat. ...
