1. From where does ozone come …

1. From where does ozone come in the photochemical smog? 2.On the basic of chemical reaction involved, explain how do chloroflurocarbons caves thinning of ozone layer in stratosphere. 3.what would be the harmful effects of improper management of industrial and diverted solid waste in a city? 4.Acid is known to contain some acid. Name these acids and where from they come in rain. 5.Ozone is a toxic gas and a strong oxidising agent even the its presence in the stratosphere is very important explain what would happen if ozone from region is completely removed. 6.Ozone is a gas heavier than air. Why does ozone layer not settle down near the earth. 7.Green house effect leads to global warming. Which substance are responsible for green house effect.

What are all the formulas used in chapter basic concepts of chemistry

25 chemical compounds with chemical formula

An organic compound contain 16.27 carbon, 0.677 hydrogen and 72.2% chlorine and it's MM is 147.5 amu. Find it's molecular formula

A mixture of 24~dm^{3} of hydrogen and 100~dm^{3} of oxygen was ignited and the reaction mixture was cooled to room temperature and pressure. What will be volume of gases remaining of the end of the reaction?

Calculate the concentration of nitric acid in moles per litre in a sample which has a density 1.41gml-1. And the mass percent of nitric acid in it being 69%

What is the no. Of moles find in 90 g of H20

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74 g of calcium hydroxide Ca(OH)2 in 1 liter

The uncertainty in position and velocity 10-¹⁰ and 5.27×10-²⁴m/srespectively calculate the mass of the particle.

Calculate the number of atoms of each type in 3.4 to ML of nitrogen gas at standard temperature and pressure??