Why Aeroplane windows are round?

The current time can be represented by below textual rebus.

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B.Sc
LLB

Can you tell us the current time?

What can you see in the middle of March and April that you can never see in any other month?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

What will you call your mother's brother's brother-in-law?

In the Thar desert, 3 men found a big 24L Jar is full of water. Since there is a shortage of water so they decided to distribute the water among themselves such that they all have equal amounts of it. But they only have a 13L, a 5L and an 11-litre Jar.

How do they do it?

On a charity event in Russia, Murray beat Djokovic by winning six games and losing three games.
Note: There is a total of 5 service breaks(one who serve lost the game).
Who served first, Djokovic or Murray?

What is the largest number you can write with just 3 digits?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

Why Wine Glass Stem is so long?