Geography

Interior of the Earth   The internal structure of the earth is layered. The Earth is generally divided into four major layers: the crust, mantle, inner core, and outer core. Earth’s crust is the outermost...

Airways The world’s first air-mail service was started in India at Allahabad; on 18th Feb 1911 on  the occasion of Kumbh mela Regular airmail services were started by Tata Sons Ltd, between Karachi and...

Railways Indian Railways is one of the largest PSU in the Country The Indian Railways route length network is spread over 115,000 km, with 12,617 passenger trains and 7,421 freight trains each day from...

Lifelines of National Economy Goods and services are transported using three modes of transport. According to the medium , transport can be classified into land water and air transport. Means of Transport Land Roadways Railways Pipelines 2. Water Inland and...

Mineral based Industries Iron and Steel Industry As all other industries heavy,medium and light depend on the iron and still industry it is also called basic industry Production and consumption of steel is often taken...

Industries can be classified on the following lines On the basis of source of raw materials used:  Agro based: cotton, woolen, jute, silk textile, rubber and sugar, tea, coffee, edible oil  Mineral based: iron and...

Manufacturing Industries Production of goods in large quantities after processing from raw material is called manufacturing Manufacturing industries acts as a backbone for the development of a nation . Relation Between Growth of agriculture...

Sex Ratio - In India sex ratio is the number of females per thousand males In regions where gender discrimination is rampant, the sex ratio is generally poor . The low number of males...

Population and Census  Census is the most comprehensive demographic, social & economic data of a country . 1st Census held in the year 1872 in India . 1st complete census held in the year 1881 Population...

Montane Forests In mountainous areas, the decrease in temperature with increasing altitude leads to the corresponding change in natural vegetation. As such, there is a succession of natural vegetation belts in the same order...