Questions

In the bond formation of barium with oxygen, the valency electrons from the barium transferred to the oxygen and forms an ionic bond.

The United Nations (UN) has declared 2017 as the "International Year of Sustainable Tourism for Development" to celebrate and advance the commitment of the tourism division to building a superior world.The International Year aims to support a change in policies, business practices and consumer behavior towards a more sustainable tourism sector that can contribute effectively to the Sustainable Development Goals (SDGs).

Thiruvananthapuram, capital of Kerala has topped in city governance ranking of the Annual Survey of India’s City Systems (ASICS) 2016 conducted by Janaagraha Centre for Citizenship and Democracy. This year it was the fourth edition the annual survey which had evaluated 21 major cities from the 18 states. It highlighted inadequacies in urban governance that could affect public service delivery and quality of life.

J. J. Thomson discovered electrons in the year 1897.

Ernest Rutherford discovered protons in 1911.

James Chadwick discovered neutrons.

The Primary Colours are Blue, Red and Green. By mixing all these three primary colours we get White colour. 

The Secondary Colours are - Yellow, Magenta and Cyan.

It was on February 28th, 1928 that CV Raman announced  his discovery of New radiation-subsequently named the Raman Effect- that won him the Noble prize.

Muhammad had to leave Mecca his birth place where he started preaching and take refuse in Medina, where he was given a warm welcome. This event took place in AD 622 and is known as the year of the Hijira, or migration, which became the first year of the Muslim Calendar.