{"id":337937,"date":"2025-05-25T18:16:21","date_gmt":"2025-05-25T12:46:21","guid":{"rendered":"https:\/\/forumias.com\/blog\/?p=337937"},"modified":"2025-05-30T17:17:46","modified_gmt":"2025-05-30T11:47:46","slug":"upsc-prelims-answer-key-2025","status":"publish","type":"post","link":"https:\/\/forumias.com\/blog\/upsc-prelims-answer-key-2025\/","title":{"rendered":"UPSC Prelims Answer Key 2025 \u2013 Set A | Set B | Set C | Set D \u2013 Download PDF \u2013 With Detailed Explanations"},"content":{"rendered":"

UPSC has successfully conducted the 1st<\/sup> session of the Civil Services Prelims Exam (CSE) for 2025. Now students would start waiting for the UPSC Prelims Answer Key 2025<\/strong>\u00a0for GS 1, to match their answers and take a guess on their future course of action. Therefore, we have come up with the\u00a0UPSC Prelims answer key 2025<\/strong>\u00a0in the PDF format. You can either download the PDF or check your answer here only.<\/p>\n\n\n\n
Upcoming Programs by ForumIAS for UPSC Mains 2025 and 2026<\/a>– Click Here<\/a><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n\n\n\n\n\n
UPSC Prelims 2025-GS 1 and CSAT Answer keys I Download PDF\u00a0<\/strong><\/td>\n<\/tr>\n
GS Paper I<\/strong><\/td>\nCSAT<\/strong><\/td>\n<\/tr>\n
SET A Answer Key<\/a><\/td>\nSET A Answer Key<\/a><\/td>\n<\/tr>\n
SET B Answer Key<\/a><\/td>\nSET B Answer Key<\/a><\/td>\n<\/tr>\n
SET C Answer Key<\/a><\/td>\nSET C Answer Key<\/a><\/td>\n<\/tr>\n
SET D Answer Key<\/a><\/td>\nSET D Answer Key<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n
GS Paper I Answer Key With Detailed explanation (GS Paper I Set B)<\/strong>– Click Here to Download<\/a>
\nCSAT Answer Key with Detailed Explanation (CSAT Set A)-<\/strong> Click Here to Download<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n\n\n\n\n\n\n
UPSC Prelims 2025 \u2013 GS 1 and CSAT Question Papers | Download PDF<\/strong><\/td>\n<\/tr>\n
Download the UPSC Prelims 2025 Question Paper – GS Paper 1 – Clean and typed PDF<\/td>\n<\/tr>\n
GS Paper I<\/strong><\/td>\nCSAT<\/strong><\/td>\n<\/tr>\n
SET A Question Paper<\/a><\/td>\nSET A Question Paper<\/a><\/td>\n<\/tr>\n
SET B Question Paper<\/a><\/td>\nSET B Question Paper<\/a><\/td>\n<\/tr>\n
SET C Question Paper<\/a><\/td>\nSET C Question Paper<\/td>\n<\/tr>\n
SET D Question Paper<\/a><\/td>\nSET D Question Paper<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Check GS Paper I Answer key for all sets, in the below given table:<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Q. No.<\/b><\/td>\nSET A<\/b><\/td>\nSET B<\/b><\/td>\nSET C<\/b><\/td>\nSET D<\/b><\/td>\n<\/tr>\n
1<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
2<\/b><\/td>\nd<\/b><\/td>\nd<\/b><\/td>\nd<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
3<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
4<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
5<\/b><\/td>\nd<\/b><\/td>\nb<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
6<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\nd<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
7<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
8<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
9<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
10<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
11<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
12<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
13<\/b><\/td>\nb<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
14<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
15<\/b><\/td>\nb<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
16<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
17<\/b><\/td>\nb<\/b><\/td>\nd<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
18<\/b><\/td>\nd<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
19<\/b><\/td>\nb<\/b><\/td>\nb<\/b><\/td>\nd<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
20<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
21<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
22<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
23<\/b><\/td>\nd<\/b><\/td>\nb<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
24<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
25<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
26<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
27<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
28<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
29<\/b><\/td>\nd<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
30<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
31<\/b><\/td>\nb<\/b><\/td>\nb<\/b><\/td>\nd<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
32<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
33<\/b><\/td>\nb<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
34<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
35<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
36<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
37<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
38<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
39<\/b><\/td>\nb<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
40<\/b><\/td>\nb<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
41<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
42<\/b><\/td>\nd<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
43<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
44<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
45<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
46<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
47<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
48<\/b><\/td>\nd<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
49<\/b><\/td>\nd<\/b><\/td>\nd<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
50<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
51<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
52<\/b><\/td>\nb<\/b><\/td>\nd<\/b><\/td>\nd<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
53<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
54<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
55<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
56<\/b><\/td>\nd<\/b><\/td>\nd<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
57<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
58<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
59<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
60<\/b><\/td>\nb<\/b><\/td>\nb<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
61<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
62<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
63<\/b><\/td>\nd<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
64<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
65<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
66<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
67<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
68<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
69<\/b><\/td>\nb<\/b><\/td>\nd<\/b><\/td>\nb<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
70<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
71<\/b><\/td>\nb<\/b><\/td>\nd<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
72<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
73<\/b><\/td>\nb<\/b><\/td>\nd<\/b><\/td>\nd<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
74<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
75<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
76<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
77<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
78<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
79<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\nd<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
80<\/b><\/td>\nd<\/b><\/td>\nd<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
81<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
82<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
83<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
84<\/b><\/td>\nb<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
85<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
86<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
87<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
88<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
89<\/b><\/td>\nd<\/b><\/td>\nd<\/b><\/td>\nb<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
90<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
91<\/b><\/td>\nd<\/b><\/td>\nb<\/b><\/td>\nb<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
92<\/b><\/td>\nd<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
93<\/b><\/td>\nc<\/b><\/td>\nb<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
94<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
95<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\n<\/tr>\n
96<\/b><\/td>\nd<\/b><\/td>\nb<\/b><\/td>\nc<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
97<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\nd<\/b><\/td>\n<\/tr>\n
98<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\n<\/tr>\n
99<\/b><\/td>\na<\/b><\/td>\nc<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n
100<\/b><\/td>\nb<\/b><\/td>\nd<\/b><\/td>\na<\/b><\/td>\nb<\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

or you can check the question wise answer of the Prelims questions, provided below:<\/p>\n

\n

UPSC Prelims Answer key 2025 with Explanation (GS Paper 1)<\/strong><\/h2>\n

(UPSC CSE Prelims GS Paper 1 Questions)<\/b><\/p>\n

Q.1)<\/b> Consider the following types of vehicles:
\n<\/span>I.Full battery Electric vehicles
\nII. Hydrogen fuel cell vehicles
\nIII. Fuel cell electric hybrid vehicles
\n<\/span><\/p>\n

How many of the above are considered as alternative powertrain vehicles?
\n<\/span>a) Only one
\n<\/span>b) Only two
\n<\/span>c) All the three
\n<\/span>d) None<\/span><\/p>\n

Ans) c
\n<\/b><\/p>\n

Exp) Option c is the correct answer.<\/b><\/p>\n

Alternative powertrain vehicles<\/b> are those that <\/span>do not rely solely on conventional internal combustion engines (ICEs) using petrol or diesel<\/b>. Instead, they use alternative energy sources such as electricity, hydrogen, or a combination of power sources. They are more environmentally friendly and often reduce or eliminate tailpipe emissions.<\/span><\/p>\n

Option I is correct: Full Battery Electric Vehicles (BEVs)<\/b><\/p>\n