SureDen
Ozone layer and Depletion of Ozone:
Ozone layer is present in stratosphere layer of atmosphere. It protects us from harmful UV rays. But now
General Physiochemical Properties:-
The general physiochemical properties of 1st row transition elements are discussed as follows:
Effect of catalyst on the rate of reaction
A catalyst is a substance which increase the speed or rate of reaction by providing an alternative pathw
CLASS 7
Rate of reaction:- can be defined as the change in concentration of any one of reactant or product per unit time. R → P
Rate of re
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