DMPQ- Explain the Urban heat island.

As urban areas develop, changes occur in their landscape. Buildings, roads, and other infrastructure replace open land and vegetation. Surfaces that were once permeable and moist become impermeable and dry. These changes cause urban regions to become warmer than their rural surroundings, forming an “island” of higher temperatures in the landscape. Heat islands occur on … Read more

13.06.18 APSC (Assam) Current Affairs

ASSAM   Centre plans to set up coach maintenance facility in State   The Railway Ministry is considering setting up a coach maintenance facility in Assam.   It is noteworthy that a Coach Refurbishment Unit was approved at Bongaigaon last year with an investment of Rs 150 crore for daily upkeep of new-generation LHB coaches. … Read more


Preparation of Oxygen Oxygen Oxygen is prepared in lab generally in two ways either by the application of heat or no application of heat. Using heat: Oxygen in lab is prepared by heating the mixture of powdered potassium chlorate and manganese dioxide in the ratio 4:1 in a hard glass test tube. The oxygen gas … Read more

 Insolation,heat budget of the earth

    The ultimate source of atmospheric energy is in fact heat and light received through space from the Sun. This energy is known as solar insolation. The Earth receives only a tiny fraction of the total amount of Sun’s radiations. Only two billionths or two units of energy out of 1,00,00,00,000 units of energy … Read more