Questions

As there is no atmosphere surrounding the moon, the second from any band that is played there cannot travel outwards there is no material medium surrounding if for its propagation.

RST0, RST1, RST2, RST3, RST4, RST5, RST6, RST7.

The part of the earth and its atmosphere in which living organisms exist or that is capable of supporting life is called Biosphere.

Electronegativity measures an element's ability to form chemical bonds. Helium is the most electronegative element followed by Fluorine.

Here in the given options, Oxygen is the most electronegative element. Fluorine is followed by Oxygen, Chlorine and Nitrogen is the most electronegative elements list.

Volcanic mountains are very common along the destructive plate boundaries i.e. Oceanic-continental plate boundaries which are yet uncovered in the rock folded mountains formed due to continental –to continental plate collision.The Himalayas are also a plate-to-plate collision tectonic boundary. In this case, the Indian Plate [of the Indian Subcontinent] is colliding head-on with the Eurasian Plate. Both plates are comprised of continental lithospheric crust, so there is no appreciable distinction in density.