Questions

Antarctica is known as white continent because 98% of it's area is covered by ice throughout the year.

Caspian Sea (371,000 sq km)

With 9 gold, 12 silver and 19 bronze, India won 40 medals in 5th Asian Indoor and Martial Arts Games and finished the Games at 11th.

Oxytocin is a mamallian hormone and also acts as neuro transmitter in the brain.

The four bonds of carbon tetrachloride (CCl4) are polar, but the molecule is nonpolar because the bond polarity is cancelled by the symmetric tetrahedral shape. Hence, making the net dipole as zero and molecule as non-polar.

When other atoms substitute for some of the Cl atoms, the symmetry is broken and the molecule becomes polar.