Aditya, good work. You have got basics in getting out chords.
And dear friend, avoid using the word 'ORIGINAL'. People around are very sensitive.
I have modified your version.
In the verse, you can omit seventh notes as it doesn't make much difference. You can replace F#m7 with F#m and F#7 with F#.
zara zara...mehektah hai...
mehektah hai....aaj toh mera
tan badan , mein pyaasi hoon..
mujhe bharle...apni baahon mein...X 2
Bm (A) Em
hai meri ka-sam....tujhko sa-nam ,
F# A Bm
door ka-hiin naa jaaa,
(A) Em F# Bm
yeh doo-ri kehti hai paas me-re aaja re....
yuhi baras baras kaali ghaatta barse
hum yaar bheeg-jayeh...
Em Em D D F#7
iss chahat ki baarish mein
meri khuli khuli latto ko sul-jhae
tu apni ungli-yoh se
Em Em D D7
mein toh iss...khwaish mein
Bm F#m G A
sardi ki raaton mein...hum soyeh rahe ek chaddar mein...
Bm A (Em) F#
hum dono tanhaan ho....naa koi bhi raahein iss ghar mein....
The chords A, and Em in brackets mean they were not in the original song.