Questions

PM inaugurates Sikkim's first airport, the Pakyong airport in Sikkim is located around 60 km from the India-China border in the village Pakyong near Gangtok the Sikkim's capital city.

Consumption is the largest component of GDP.

Isotopes are variations of an element that have the same charge as the original element, but a different mass, which is caused by either more/less neutrons in the nucleus.

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,... 

SO2 has a net dipole moment and has a bent shape in its structure as water molecule. Hence it is a polar molecule.