Who is the current Revenue Secretary of India?

The Revenue Secretary heads the Department of Revenue under the Ministry of Finance, which frames and administers India's direct-tax policy (via the CBDT) and indirect-tax policy (via the CBIC, covering GST and Customs). The Ministry of Finance has five secretary-level charges — Economic Affairs, Expenditure, Revenue, Financial Services, and Disinvestment (DIPAM) — and by convention the senior-most of the five additionally carries the coordinating title of "Finance Secretary" while continuing to hold their own department.

Ajay Bhushan Pandey took charge as Revenue Secretary in December 2018, succeeding Hasmukh Adhia, and continued to hold this post through 2019 and into 2020 — the period this question (a Coal India 2020 previous-year paper) is asking about. In March 2020 he was additionally designated Finance Secretary while still retaining the Revenue Secretary charge.

• Rajiv Kumar was Secretary, Department of Financial Services, and held the coordinating "Finance Secretary" title from July 2019 until March 2020 — a related Finance Ministry post, but a different department from Revenue.

• Ramesh Singh and S.K. Sharma do not have any public record of holding a Ministry of Finance secretary-level post in this period.

So, for the period this question refers to, the Revenue Secretary of India was Ajay Bhushan Pandey.