Dear Ramesh, IES exam consists of 3 stages.

• Stage 1 or Preliminary Examination,
• Stage 2 or Mains Examination and
• Stage 3 or Personal Interview

• Indian Engineering Service examination (Stage 1 and Stage 2) is conducted in offline mode.
• Questions in Preliminary Exam are objective type. Whereas, questions in Mains Exam are conventional in nature.
• The medium of examination is English.
• For every wrong answer, one-third mark will be deducted.
  

Engineering aspirants who qualify Prelims as per IES Cut off are eligible to appear for IES Mains scheduled for July 1 (tentative). The nationwide engineering exam is conducted for recruitment to various posts in Indian Engineering Services, under the Government of India.

Stage 1 will have two papers. Paper 1 will have questions from General Studies and Paper 2 will have questions from Engineering Discipline.

For each wrong answer, one-third mark is deducted. Candidates marking more than one answer, it is treated as a wrong answer. Questions left unanswered will have no deduction for marks. Marks obtained in this stage are counted for determining the final order of merit.