Step to check answer key :
Payment per question :
Candidates will have to pay Rs 100 per question/answer challenged.
Note : "Candidates must note that the answer keys received after 5:30 pm on December 22 will not be entertained under any circumstances," the official notification told.
About Staff Selection Commission (SSC) :
The Staff Selection Commission is an organisation that works under the government of India to recruit staff for various posts in the various ministries and departments and in subordinate offices. The commission also conducts exam for the recruitment in various departments of the state. For any query related to examination, all the candidates are advised to check the official notification.
Source: http://indiatoday.intoday.in/education/