Which flower has two lips?

What does this rebus mean?

O
N
C
E
TIME

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

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

In the following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

With the help clues provided in the image, can you find the 5 digit key?

What is the centre of gravity?