Solving previous year papers is the single most important step in cracking the Indian Statistical Service (ISS) exam. It helps you understand the trend, difficulty level, and the “language” of UPSC.
Below, you will find the official question papers from 2014 to 2025 organized year-wise.
- ⚠️ Exam Essential: Scientific calculators are allowed in the exam hall for Statistics papers. If you haven’t bought one yet, we highly recommend the Casio FX-991ES Plus-2nd Edition – View on Amazon. It is the standard for ISS aspirants.
- Need recommended books? Check our complete UPSC ISS Booklist & Resources Page.
Year-Wise Question Papers
UPSC ISS 2025 Question Papers
- General English: Download PDF ⬇️
- General Studies: [Download PDF ⬇️]
- Statistics Paper I (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper II (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper III (Subjective): [Download PDF ⬇️]
- Statistics Paper IV (Subjective): [Download PDF ⬇️]
UPSC ISS 2024 Question Papers
- General English: Download PDF ⬇️
- General Studies: [Download PDF ⬇️]
- Statistics Paper I (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper II (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper III (Subjective): [Download PDF ⬇️]
- Statistics Paper IV (Subjective): [Download PDF ⬇️]
UPSC ISS 2023 Question Papers
- General English: Download PDF ⬇️
- General Studies: [Download PDF ⬇️]
- Statistics Paper I (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper II (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper III (Subjective): [Download PDF ⬇️]
- Statistics Paper IV (Subjective): [Download PDF ⬇️]
UPSC ISS 2022 Question Papers
- General English: [Download PDF ⬇️]
- General Studies: [Download PDF ⬇️]
- Statistics Paper I (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper II (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper III (Subjective): [Download PDF ⬇️]
- Statistics Paper IV (Subjective): [Download PDF ⬇️]
UPSC ISS 2021 Question Papers
- General English: [Download PDF ⬇️]
- General Studies: [Download PDF ⬇️]
- Statistics Paper I (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper II (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper III (Subjective): [Download PDF ⬇️]
- Statistics Paper IV (Subjective): [Download PDF ⬇️]
UPSC ISS 2020 Question Papers
- General English: [Download PDF ⬇️]
- General Studies: [Download PDF ⬇️]
- Statistics Paper I (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper II (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper III (Subjective): [Download PDF ⬇️]
- Statistics Paper IV (Subjective): [Download PDF ⬇️]
UPSC ISS 2019 Question Papers
- General English: [Download PDF ⬇️]
- General Studies: [Download PDF ⬇️]
- Statistics Paper I (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper II (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper III (Subjective): [Download PDF ⬇️]
- Statistics Paper IV (Subjective): [Download PDF ⬇️]
UPSC ISS 2018 Question Papers
- General English: [Download PDF ⬇️]
- General Studies: [Download PDF ⬇️]
- Statistics Paper I (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper II (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper III (Subjective): [Download PDF ⬇️]
- Statistics Paper IV (Subjective): [Download PDF ⬇️]
UPSC ISS 2017 Question Papers
- General English: [Download PDF ⬇️]
- General Studies: [Download PDF ⬇️]
- Statistics Paper I (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper II (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper III (Subjective): [Download PDF ⬇️]
- Statistics Paper IV (Subjective): [Download PDF ⬇️]
UPSC ISS 2016 Question Papers
- General English: [Download PDF ⬇️]
- General Studies: [Download PDF ⬇️]
- Statistics Paper I (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper II (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper III (Subjective): [Download PDF ⬇️]
- Statistics Paper IV (Subjective): [Download PDF ⬇️]
UPSC ISS 2015 Question Papers
- General English: [Download PDF ⬇️]
- General Studies: [Download PDF ⬇️]
- Statistics Paper I (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper II (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper III (Subjective): [Download PDF ⬇️]
- Statistics Paper IV (Subjective): [Download PDF ⬇️]
UPSC ISS 2014 Question Papers
- General English: [Download PDF ⬇️]
- General Studies: [Download PDF ⬇️]
- Statistics Paper I (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper II (Objective): [Download PDF ⬇️]
- Answer key
- Statistics Paper III (Subjective): [Download PDF ⬇️]
- Statistics Paper IV (Subjective): [Download PDF ⬇️]
Frequently Asked Questions (FAQs)
Is the calculator allowed in all papers?
No, Non-programmable Scientific Calculators are allowed only in Statistics Papers (I, II, III, and IV). They are not allowed in General English and General Studies.
Where can I find the solution or answer keys?
UPSC officially releases answer keys only for Objective papers (Paper I & II) after the final results are declared. For subjective papers, we recommend analyzing standard textbooks.
Which books should I refer to for these papers?
You can check our detailed subject-wise breakdown on the UPSC ISS Booklist Page.