John was drowned by he was not wet. How?

What does below chemistry rebus means?

What does this rebus means ?

PROG WORKRESS

Rearrange the letters in "new door" to make one word.

There was a greenhouse.
Inside the greenhouse, there is a white house.
Inside the white house, there is a red house.
Inside the red house, there are lots of babies.

What is It?

The host of a game show offers the guest a choice of three doors. Behind one is an expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

Why do we preferably have round manhole covers and not square ones?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

Which is faster, Heat or Cold ? Explain.

A man is shown a portrait painting. He looks closely, then tells, “Brothers and sisters have I none, but that man’s father is my father’s son!” Who is the man in the portrait?