What does below rebus means ?

Which tank will fill first?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

Why is Saturday stronger than Monday?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Before Mount Everest was discovered, what was the highest mountain in the world?

Birbal was jester, counsellor, and fool to the great Moghul emperor, Akbar.
The villagers loved to talk of Birbal's wisdom and cleverness,
and the emperor loved to try to outsmart him.
One day Akbar (emperor) drew a line across the floor.
"Birbal," he ordered, "you must make this line shorter, but you cannot erase any bit of it."
Everyone present thought the emperor had finally outsmarted Birbal.
It was clearly an impossible task.
Yet within moments the emperor and everyone else present had to agree that Birbal had made the line shorter without erasing any of it.
How could this be?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

Solve this riddle by finding the odd one out from the rest.

A man is lying dead in a field where no one is around. His head is split open and his legs are disfigured. Near to him, there is an unopened package. No living organism can be found anywhere at the crime scene.

How did he die?