. This term first came into use in 1759 and was used to denote entities that were ‘obtained by digging’ and ‘found buried in the earth’, according to the Oxford English Dictionary. The term can also refer to long-dead organisms that can be burned for energy. What is the term?
Fossil fuels
. X (10 letters) is the highest rank of coal. Hard and brittle, it is often referred to as ‘hard coal’, containing a high percentage of fixed carbon and a low percentage of volatile matter. Y (7 letters) or ‘brown coal’ is the lowest grade coal with the least concentration of carbon. It has high moisture content and is mainly used in electricity generation. Identify X and Y.
X - Anthracite, Y - Lignite
. The National Grid is the high-voltage electricity transmission network in India, and is one of the largest operational synchronous grids in the world. However, two Indian territories are not connected to the National Grid. There is no single power grid for these territories owing to their geography and topography, including separation over great distances. Identify the territories.
Andaman and Nicobar Islands and Lakshadweep
