"My priority will be to fulfil all the promises made by UPA for minorities in the election manifesto in letter and spirit and see that Sachar Committee is implemented," Khan told PTI immediately after the swearing in ceremony.
The veteran Parliamentarian from Karnataka said that he would also try to address issues which people from all minority communities feel have not been fulfilled so far.
The Congress leader also said Rahul Gandhi should lead the party in 2014 Lok Sabha elections and he was "sure" that with his vision for the country, Rahul will be a successful leader.
Asked whether he feels that Muslims have got adequate representation in the Cabinet with his induction as a Minister, Khan said "it is for the Muslims to understand that they get adequate representation."
"But I will try to work for the uplift of all minority communities," the Rajya Sabha MP said.
The 73-year-old leader said Government will work "positively for the development of the country and fulfilment of promises" made to the people and any effort to "tarnish" the image of UPA will be "unacceptable".
"So we will not be deterred with these adverse publicity," Khan, who relinquished the charge of Rajya Sabha Deputy Chairman earlier this year, said while replying to a question.