The gas that is most useful in protecting humans against ...
The gas that is most useful in protecting humans against solar marathon is
chlorine
ozone
carbon IV oxide
hydrogen sulphide
Correct answer is B
The ozone layer or ozone shield refers to a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet (UV) radiation. It contains high concentrations of ozone (O3) relative to other parts of the atmosphere, although still very small relative to other gases in the stratosphere
Carbohydrates are large molecules with the molecular formula Cx(H2O)y. In which of th...
The octane number of zero is assigned to ...
Copper can best be purified by ...
The best indicator to use for the titration of ethanoic acid with sodium hydroxide is ...
Substance employed as drying agents are usually? ...
What is the chemical symbol for Thorium? ...
Electrolysis is applied in the following processes except ...
What is the trend for ionization energy across a period in the periodic table? ...
The properties of a good primary standard solution include the following except? ...