What does this rebus riddle means ?

Decode below rebus
D
N
A
T
S , D

Rahul decided to meet Simran so he boards a local train from Bombay station. Just after the station, there is a 1km long tunnel. The train starts and is now accelerating. Rahul is a claustrophobic guy, so what is the best position for him to sit?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

Can you solve this picture maths equation?

Two friends were betting. One said to the other, "The coin will be flipped twenty times and each time the coin lands on the head, I will give you $2 and each time it lands on the tale, you will give me $3." After flipping the coin twenty times not a single penny was exchanged among them.

How many times did the coin land on heads?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

What is the longest word in the dictionary?

Can you identify the Oscar-winning movie from the rebus below?