How is a fly different from a mosquito?

If an electric train is travelling south, then which way is the smoke going?

I can write cow in 13 letters.

Can You?

What kind of tree can you carry in your hand?

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

The barber of Town shaves all men living in the town. No man living in the town is allowed to shave himself. The barber lives in that town. Who then shaves the barber of the town?

I am eight letters long - "12345678"
My 1234 is an atmospheric condition.
My 34567 supports a plant.
My 4567 is too appropriate.
My 45 is a friendly thank-you.
My 678 is a man's name.

What word am I?

A man is surviving on an island along with his friend. They have been starving for four days for food. Suddenly, they find a fisherman. The friend goes with the fisherman in order to catch the fish (if they can find any).

The fisherman returns after some time but he is alone and has some salmon that he had prepared. When asked, the fisherman tells him that his best friend fell off the boat and drowned in the water. Starving for so long, he eats the meal while crying for his friend.

After being rescued, he goes to a diner and orders salmon. When he eats his meal, he jumps and commits suicide. Why did he do it?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.