Questions

China recently unveiled the world's first underground hotel.

The ruling of ‘None of The Above’ (NOTA) option will not be applicable for voting in Rajya Sabha elections was made by a bench of Justices comprising CJI Dipak Misra and Justices AM Khanwilkar and DY Chandrachud of the Supreme Court.

The great Sahara Desert created an opportunity for wealth by trading to peoples who live in and around the region. The city of Timbuktu was built as a result of this trade.

Hundreds of years ago, salt was a very valuable commodity. It was valued for its taste as well as its ability to preserve food. One of the most productive areas for producing salt was the Sahara Desert, and the city of Timbuktu was built to capitalize upon this trade.

Spanish Armada

A fingernail.

A chemical reaction in which involves the absorption of heat from the environment is called a Endothermic reaction. 

Examples : Dissolving ammonium chloride in water, photosynthesis, melting ice cubes, mixing of potassium chloride with water,...

In the contrast, chemical reactions involving release of heat are known as exothermic reactions.

Examples : Combustion, coal is burnt, mix of CaO with water,...