Which word does the below Plexor means ?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

What does below rebus means ?

What brings you down but never up?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Can you find the six hidden animals in the picture below?

What goes through cities and fields, but never moves?

Which wheel of car does not rotate when you turn your car right?

Identify The phrase in the picture.