12.06.18 (CGPCS) Chhattisgarh Current Affairs

CHHATTISGARH   C’garh only state to distribute rs 700 cr bonus to tendupatta collectors’   Chief Minister Raman Singh inaugurated and performed bhumi-pujan of 21 development works worth nearly Rs 100 crore in the public meeting held at playground of Government Higher Secondary School Hringirishi in the district.   This includes extension work of 22-km … Read more

The Rate of a Chemical Reaction

The Rate of a Chemical Reaction The rate of a chemical reaction can be defined as the amount of the reaction which occurs in unit time. The rate of a reaction is measured by choosing certain properties of the reaction which will indicate how far the reaction has gone, and whose magnitude can be observed … Read more

Corossion of metals

Corrosion is defined as an attack on a material as a result of chemical, frequently electrochemical reaction, with the surrounding medium. According to this definition, the term corrosion can be applied to all materials, including non-metals. But in practice, the word corrosion is mainly used in conjunction with metallic materials. Why do metals corrode? Apart … Read more

Exothermic and endothermic reactions

Endothermic Reactions Endothermic reactions are those chemical reactions where energy is absorbed by the system from the surroundings mostly in the form of heat. The concept is applied in the physical sciences like chemical reactions where hear is converted to chemical bond energy by way of experiments. Common examples of endothermic reactions are cooking an … Read more

Fast and slow chemical reactions

Slow reactions   Chemical reactions that occur very slowly and can take a long time for completion are called slow reactions. Usually covalent compounds are involved in slow reactions. Some reactions can take days, weeks and months to complete; they are called very slow reactions. For example, Milk may take several hours or a day to convert to … Read more

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