_____ is produced from incomplete burning of fuels such as petrol and diesel.
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By volume, 78% of air is _______________
What was the element used in traditional thermometers which is highly toxic in nature?
Aluminium oxide is ___ in nature.
Which type of Ethanol is made from sources like molasses, sugarcane, sugar beet, sorghum and edible oil seeds?
Number of Sigma and Pi bonds in benzene, respectively is
Which of the following constitutes highest percentage of Green House gases?
Who stated the following law : 'The properties of the elements are the periodic function of their atomic masses'?
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