what are tectonic plates ncert
Solution: The crust (upper part) of the earth has been formed out of seven major and some minor plates. These are called tectonic plates. A Tectonic plate (also called lithospheric plate) is a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere.olution: The northern plain has been formed by the interplay of the three major river systems, namelyâ the Indus, the Ganga and the Brahmaputra along with their tributaries. This plain is formed of alluvial soil.