If STARDOM is coded as HBAGDDB, then what will be code for WASHINGTON?

Study the following information to answer the given questions:
In a certain code ‘a friend of mine’ is written as ‘4 9 1 6’  ‘mine lots of metal’ is written as ‘3 1 0 9’ and ‘a piece of metal’ is written as ‘7 1 6 3’.

What does ‘0’ stands for?

If 'sand' is called 'air', 'air' is called 'plateau', 'plateau' is called 'well, 'well' is called 'island' and island' is called 'sky', then from where will a woman draw water? 

In a certain code language, "BANGED" is written as "JJKQCC" and "TILTS" is written as "XXOKU". How is "STRAY" written in that code language? 

If SPARK is coded as TQBSL, what will be the code for FLAME? 

"RUMOUR" is written as "MURRUO". How is "RACKET" written in that code language? 

A, B, C, D, E and F are cousins. No two cousins are of the same age, but all have birthday on the same date. The youngest is 17 years old and E the oldest is 22 years old. F is somewhere between B and D in age. A is older than B. C is older than D.
 Which of the following statement is not possible?

ACCIDENT is related to TNEDICCA in the same way as PASSENGER is related to______.