Questions

The Communist Government of Yugoslavia had kept itself free from the Soviet Union almost from the beginning . Yugoslavia was one of the founders of the Non-Aligned Movement. It was a fedaration of 6 republics. In four of these republics, the rule of the communist parties came to an end in 1990. By 1992,Yugoslavia broke up into five independent states-the new states of yugoslavia comprising Serbia and Montenegro, Croatia, Macedonia, Slovenia and Bosnia-Herzegovina.

FIFO (First In First Out) stack is used in 8086. In this type of Stack the First Stored Information is retrieved first.

You have to consider three things.

1. First, are the bonds polar?

Look at differences in electronegativity and if  it is >0.5, bonds are polar.

2. Second, does the molecule have unshared electron pairs?

If so, they generally lead to a polar molecule.

3. Third, is the molecule symmetric?

If so, then although the bonds may be polar, the symmetry cancels out the individual bond polarity and the molecule is non polar.

CF4 follows all the rules above and has a symmetric distribution of charge, making it nonpolar. The others all have asymmetric charge distributions.

Hence, CF4 represents a Non-polar molecule.

The pharynx is a passageway shared by both food and air.

The World Environment Day (WED) is observed every year on June 5 to raise awareness about forests and wider issues of environmental protection. The 2017 theme is ‘Connecting People to Nature’. It implores us to get outdoors and into nature, to appreciate its beauty and to take forward the call to protect the Earth that we share. The host country for the WED 2017 is Canada, where the official celebrations take place.