Ramu found that an iron sample in contact with sand is corroded. It is found that alkaline medium inhibits the rusting of iron. Explaln.

Ramu found that an iron sample in contact with sand is corroded.What is corrosion?

Iron metal is largely used for making ships. ln the sea, ship is in contact with saline water. Destruction of iron becomes quicker in saline medium. a)What is such processes generalty called? b). Destruction of iron can be prevented by coating with zinc, Explain the chemical reaction by-which iron gets protected. Give equations.

A sample of 16 g charcoal was brought into contact with CH gas contained in a vessel of 1 litre at 27^@C . The. pressure of gas was found to fall from 760 to 608 torr. The density of charcoal sample is 1.6 g//cm^3 . What is the volume of the CH_4 gas adsorbed per gram of the adsorbentat 608 torr and 27^@C ?

A simple iron oxide was found to contain 72.17% iron. 2 g of the oxide from another source gave 1.44 g of iron. Show that the results illustrate law of definite proportions.

The equations of the production of iron in the blast furnace are given. Asnwer the fol-lowing questions C+O_2rarrCO_2 , CO_2+crarr2CO , CaCO_3rarrCaO+CO_2 , CaO+SiO_2rarrCaSiO_3 , Fe_2O_3+3COrarr2Fe+3CO_2 : Which is the main impurity found in hae-matite? Which substance is used to rem-ove the gangue?