The gas present in the stratosphere which filters out som...
The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is
helium
ozone
oxygen
methane
Correct answer is B
No explanation has been provided for this answer.
When copper powder is heated with concentrated sulphuric acid, the gas produced is? ...
In the preparation of salts, the method employed will depend on the? ...
The vapour density of an organic compound with the molecular formula C2H4O2, is [H=1.0, C=12...
The high solubility of ethanol in water is due to its ...
When chlorine water is exposed to bright sunlight, the following products are formed ...
The purity of a solid sample can best be determined by its? ...
The shape of ammonia molecules is ...
The fundamental difference between the three states of matter is the ...