Questions

Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. By sharing their outer most (valence) electrons, atoms can fill up their outer electron shell and gain stability.

Examples of compounds with covalent bonds ::

HCl, CO2, O2,... 

The American Civil War (1863)

Holland is also known as Netherlands, which means "Low lands". Dutch Engineers reclaimed considerable part of the seabed by building dykes and pumping out the sea water into canals. Some houses in Holland are below sea level. Belgium has also Low lands  bordering the North Sea and dykes are constructed to control the encroachment of the sea.

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Karewa sediments are treasures of many human civilizations and habitations. In fact, the agriculture of the valley dominantly survives and sustains on Karewa soils. The world famous saffron from Pampore and apples from Shopian are best examples.The famous almond orchids are best grown in the soils of karewas.

The karewas are mainly devoted to the cultivation of saffron, almond, walnut, apple and orchards.Ling nuts (singharas) grow throughout the East of India: West Bengal, Jharkhand, and Bihar are examples of such regions.

MS Dhoni, the skipper of CSK - Chennai Super Kings team in IPL Indian Premier League has become the first-ever captain to win 100 matches in IPL history.

India successfully launched Chandrayaan1 satellite from SDSC Sriharikota, Andhra Pradesh on 22 October, 2008.

Dr Manmohan Singh also announced that the year 2012 would be celebrated as the National Mathematics Year. The Indian mathematical genius Srinivasa Ramanujan was born on 22 December 1887 and died on 26 April 1920.