Geography

Atal Tunnel is the longest highway tunnel in the World. The 9.02 Km long tunnel connects Manali to Lahaul-Spiti valley throughout the year. Earlier the valley was cut off for about 6 months each year owing to heavy snowfall. The Tunnel is built with ultra-modern specifications in the Pir Panjal range of Himalayas at an … Read more

Frequent inundation of agricultural land and human settlement, particularly in Assam, West Bengal, Bihar and Eastern Uttar Pradesh (flooding rivers), coastal areas of Orissa, Andhra Pradesh, Tamil Nadu and Gujarat (cyclone) and Punjab, Rajasthan, Northern Gujarat and Haryana (flash floods) have serious consequences on the national economy and society. Floods do not only destroy valuable … Read more

Inter Cropping: Growing two or more crops simultaneously on the same piece of land with definite row arrangementor in a fixed ratio. It was originally practiced as an insurance against crop failure under drained conditions. Intercroppingsystems utilizes resources efficiently and their productivity is increased. Example: – Maize + Cowpea, Potato + Mustard, Groundnut + Redgram. … Read more

Excessive rainfall in river catchments or concentration of runoff from the tributaries and river carrying flows in excess of their capacities. Backing water in tributaries at their confluence with the main river. Synchronization of flood peaks in the main rivers or their tributaries. Intense rainfall when river is flowing full. Poor natural drainage system. Landslides … Read more

It is a belt of low pressure which circles the Earth generally near the equator where the trade winds of the Northern and Southern Hemispheres come together. It is characterised by convective activity which generates often vigorous thunderstorms over large areas. It is most active over continental land masses by day and relatively less active … Read more

PVTGs constitute the most vulnerable section among tribals and largely reside in isolated, remote and difficult areas in small scattered hamlets. PVTG tag is given to identify the vulnerable tribes and to have specialised scheme to safeguard their cultural identity. Tag is given by Ministry of Home affairs. 75 tribal groups have been categorized by … Read more

.  Process of formation of the fronts is known as frontogenesis. There are four types of fronts: Cold Front When the cold air moves towards the warm air mass, its contact zone is  called the cold front. As the cold front nears your region, the barometer falls.  The cold  air behind the front wedges under … Read more

. Most of the metallic minerals in India occur in the peninsular plateau region in the old  crystalline rocks. Over 97 per cent of coal reserves occur in the valleys of Damodar, Sone, Mahanadi and Godavari.  Areas of high rainfall lack in soluble minerals like Limestone, Gypsum and Salt.  Northern Plains are poor in minerals … Read more

According to ICAR Indian soils are classified as:- Alluvial soils:-Alluvial soils are formed mainly due to silt deposited by Indo Gangetic Brahmaputra rivers. In coastal regions some alluvial deposits are formed due to wave action. Black soils:-The black soils are found mainly on the Deccan lava region covering large parts of Maharashtra, some parts of … Read more

The Matching of Continents (Jig-Saw-Fit) The shorelines of Africa and South America facing each other have a remarkable and unmistakable match. It may be noted that a map produced using a computer programme to find the best fit of the Atlantic margin was presented by Bullard in 1964. It proved to be quite perfect. The … Read more