Questions

BEML - Bharat Earth Movers Limited is the PSU which had received 'Top Challengers' and 'Best Mining Equipment Seller Award' recently for the year 2017 - 2018. 

On December 21, the earth is in an equivalent position on the opposite points in its orbit, So the South pole is tipped towards the sun and North pole away from it resulting in 24 hours of darkness at the North pole, as the sun is overhead on the Tropic of Capricorn. This phenomenon is winter solstice; while on June 21, North pole is tipped towards the Sun but the South pole is tipped away from the sun resulting in 24 hours of darkness on the South Pole, as the sun is overhead on the Tropic of Cancer.This phenomenon is summer solstice; while Aphelion is the position of the earth in its orbit when it is at its distant point from the sun.

A modem is a hardware device which performs both modulation and demodulation. MODEM means (Modulator-Demodulator).

The highway transportation system has helped to reduce traffic deaths with its easy flow of traffic under rash driving rules and also it helped to country economically.

Group 1 metals are also called as alkali metals with reactive in nature and low melting points. They are soft and produce hydrogen and alkaline metal hydroxide solution when they react with water.