by Rajan Gupta | Aug 9, 2020 | Articles
The Respiratory system (or ventilatory system) is the biological system that introduces respiratory gases to the interior and performs gas exchange. In humans and other mammals, the anatomical features of the respiratory system include airways, lungs, and the...
by Rajan Gupta | Aug 9, 2020 | Articles
Enzymes are complex chemical compounds made up of proteins which act as catalysts in our body i.e. the enzymes increase the rate of chemical reactions taking place in our body. For example, the digestion of food in our takes place in 4-5 hours due to action of...
by Rajan Gupta | Aug 9, 2020 | Articles
The chemical compounds that work on the surface of a liquid and reduce its surface tension are called surfactants. In simple words we can say that surfactants are those chemicals that increase surface area of a liquid and enhance its wettability by reducing its...
by Rajan Gupta | Aug 9, 2020 | Articles
We shall understand electrolytic refining of metals by taking the example of refining of copper. In case of copper, a thick block of impure copper is made anode and a thin block of pure metal is made cathode and copper sulphate solution is used as an electrolyte. On...
by Rajan Gupta | Aug 9, 2020 | Articles
This method is used for concentration of sulphide ores of copper, lead and zinc. In this method, powdered ore is put in a tank full of water. And then, some Pine oil is added to it. In the tank the particles of sulphide ore are wetted by pine oil whereas the gangue...
by Rajan Gupta | Aug 9, 2020 | Articles
Metals are the elements which can form positive ions by losing electrons. For example, Na is a metal because it can form positive ion (Na+) ion by losing an electron from its outermost shell. In the same way Iron, aluminium, copper, gold, silver, magnesium, potassium...
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