The gas that is most useful in protecting humans against ...
The gas that is most useful in protecting humans against solar radiation is?
chlorine
ozone
carbon (IV) oxide
hydrogen sulphide
Correct answer is B
The ozone layer in the stratosphere absorbs a portion of the radiation from the sun, preventing it from reaching the planet's surface.
Most importantly, it absorbs the portion of UV light called UVB.
Why is water often referred to as the "universal solvent"? ...
Two metallic ions commonly present in hard water are ...
The halide used widely in photography is ...
What is the atomic number of Technetium? ...
Which of the following can be used to predict the type of bonding in HCI? ...
Which of these reagents can confirm the presence of a triple bond? ...