What begins with T, ends with T, and has T in it?

What is the word or phrase below?
R | E | A | D

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

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

A lion and its tamer are standing inside a cage that measures 1 unit in radius. Both of them can effortlessly run at the speed of 1 unit maximum.

1) Suppose the lion is hungry, will he be able to eat up the tamer?
2) If yes, how long can the tamer survive?