Is cricket Indias national sport
Nope
Hockey is the national sport of India.
Cricket is the national sport of West Indies.
Is there a reason why cricket outfits are white?
Only TEST Matches have a white jersey with team logo, sponsors and the player name and number.
In other formats of cricket every country have their unique jerseys.
Could someone explain what LBW means?
It is quite difficult to explain LBW.
It stands for Leg Before Wicket.
When the ball hits the batsman's body (except hands) without having contact with the bat then LBW happens.
There are certain conditions after which it is given OUT.
1. Ball shouldn't pitch/hit the ground outside the line of leg stump.
2. The impact where the ball hits the pads should be on the stumps(only when batsman tries to play a genuine shot).
3. If there was no pads and batsman the ball should hit the stumps.