Which tank will fill first?

What has 13 hearts but no other organs?

What is the longest word in the dictionary?

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

Can you spot the hidden girl in the picture below?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

In which direction should the missing arrow point?

Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS

An American nightclub called 'The Coconut Grove' had a terrible fire in which over 400 people died. A simple design flaw in the building led to a high death toll. Subsequently, regulations were changed to ensure that all public buildings throughout the country eliminated this one detail, which proved deadly. What was it?