UK spouse visa

Sponsor(wife,Nepali citizen) is doing full time job in UK since 2009 till present.
Applicant(Husband,Nepali citizen) is having Dubai Residence visa (valid till September 2017) on Nepali passport and working in Dubai,U A E since 2008 till present.
Question:
1)Is applicant(husband) allow to apply for UK spouse/settlement visa from Dubai,UAE ?

Sponsor(wife,Nepali citizen) is doing full time job in UK since 2009 till present.
Applicant(Husband,Nepali citizen) is having Dubai Residence visa (valid till September 2017) on Nepali passport and working in Dubai,U A E since 2008 till present.
Question:
1)Is applicant(husband) allow to apply for UK spouse/settlement visa from Dubai,UAE ?

Yes, you are allowed to apply from Dubai as you (the husband?) has legal status in Dubai... you are considered resident there.

1) which English language test is required for applying UK spouse/settlement visa from Dubai,UAE ?
2)Tuberculosis(TB) medical report is required or not for applying UK spouse/settlement visa from Dubai,UAE ?
3) Is police report required or not for applying UK spouse/settlement visa from Dubai,UAE ?
4) Does any documents are required from Applicant(Husband) employer (Dubai) ?

1) which English language test is required for applying UK spouse/settlement visa from Dubai,UAE ?
2)Tuberculosis(TB) medical report is required or not for applying UK spouse/settlement visa from Dubai,UAE ?
3) Is police report required or not for applying UK spouse/settlement visa from Dubai,UAE ?
4) Does any documents are required from Applicant(Husband) employer (Dubai) ?

As this is a website for US -> UK immigration, most posters here are exempt from questions 1-3.

There are a significant number of documents required from the sponsor (the wife in this case), but only very few from the applicant. The documents required will depend on the category you are applying under. Please look at the .gov website for the specifics as they will be individual to your circumstance...

The main requirements from the sponsor are:
Financial
Accommodation
Sponsoring letter
Sponsor's employer letter

Applicant needs to provide:
passport photos
passport
(cover letter)
enduring relationship (contact during the time you have not lived in the same place)

Think that covers most of the requirements...