GATE XE 2021: Engineering Sciences
Text of page 1
GATE 2021 Answer Key for Engineering Sciences (XE)
Graduate Aptitude Test in Engineering (GATE 2021)
Paper / Section: Engineering Sciences (XEE) / Engineering Mathematics (XE-A)
Question Type Section Answer Negative
Q. No. Session Marks
MCQ/MSQ/NAT Name
e Key/Range Marks
1 6 MCQ GA A 1 1/3
G MCO GA B 1 1/3
3 6 MCQ GA B 1 1/3
4 6 MCQ GA B 1 1/3
5 6 MCQ GA C 1 1/3
6 6 MCQ GA C 2 2/3
7 6 MCQ GA A 2 2/3
8 6 MCQ GA C 2 2/3
9 6 MCQ GA A 2 2/3
10 6 MCQ GA C 2 2/3
1 6 MCQ XE-A D 1 1/3
2 6 MCQ XE-A C 1 1/3
3 6 MCQ XE-A B 1 1/3
4 6 NAT XE-A 0.5 to 0.5 1 0
5 6 NAT XE-A 0.5 to 0.5 1 0
6 6 NAT XE-A 0.665 to 0.668 1
7 6 NAT XE-A 0.375 to 0.375 1 0
8 6 MCQ XE-A D 2 2/3
9 6 MCQ XE-A A 2 2/3
10 6 NAT XE-A 4 to 4 2 0
11 6 NAT XE-A 0.32 to 0.32 2 0
Text of page 2
GATE 2021 Answer Key for Engineering Sciences (XE)
Graduate Aptitude Test in Engineering (GATE 2021)
Paper / Section: Engineering Sciences (XEE) / Fluid Mechanics (XE-B)
Question Type Section Answer Negative
Q. No. Session Marks
MCQ/MSQ/NAT Name Key/Range Marks
1 6 MCQ XE-B C 1 1/3
2 6 MCQ XE-B D 1 1/3
3 6 MCQ XE-B C 1 1/3
4 6 MCQ XE-B B 1 1/3
5 6 MCQ XE-B D 1 1/3
6 6 MCQ XE-B B 1 1/3
7 6 MCQ XE-B B 1 1/3
8 6 MCQ XE-B A 1 1/3
9 6 NAT XE-B 2.9 to 3.1 1 이
ว
11 6 MCQ XE-B D 2 2/3
12 6 MCQ XE-B B 2 2/3
13 6 NAT XE-B 6.0 to 6.5 2 0
14 6 NAT XE-B 0.9 to 1.1 2 0
15 6 NAT XE-B 1.7 to 1.9 2 0
16 6 NAT XE-B 12.9 to 13.1 2 0
17 6 NAT XE-B 3.9 to 4.1 2 이
18 6 NAT XE-B 10.5 to 12.0 2 0
19 6 NAT XE-B 48.0 to 52.0 2 이
20 6 NAT XE-B 17.5 to 19.5 2 0
21 6 NAT XE-B 182.0 to 192.0 2 0
22 6 NAT XE-B 18.5 to 20.0 2 0
Text of page 3
GATE 2021 Answer Key for Engineering Sciences (XE)
Graduate Aptitude Test in Engineering (GATE 2021)
Paper / Section: Engineering Sciences (XEE) / Materials Science (XE-C)
Question Type Sectior Answer Negative
Q. No. Session Marks
MCQ/MSQ/NAT Name Key/Range Marks
1 6 MCQ XE-C C 1 1/3
2 6 MCQ XE-C C 1 1/3
3 6 MCQ XE-C D 1 1/3
4 6 MCQ XE-C C 1 1/3
5 6 MCQ XE-C C 1 1/3
6 6 MCQ XE-C B 1 1/3
7 6 MCQ XE-C B 1 1/3
8 6 MSQ XE-C B; D 1 0
9 6 NAT XE-C 1 0
0.063
10 6 MCQ XE-C B 2 2/3
11 6 MCQ XE-C C 2 2/3
12 6 MCQ XE-C C 2 2/3
13 6 MSQ XE-C A; B 2 0
14 6 NAT XE-C 5.85 to 6.00 2 0
15 6 NAT XE-C 9600 to 9800 2 0
16 MAT YEC 38 to 12 2
17 6 NAT XE-C 3.4 to 4.8 2 이
18 6 NAT XE-C 71 to 77 2 0
19 6 NAT XE-C 210 to 220 2 0
20 6 NAT XE-C 0.60 to 0.62 2 0
Text of page 4
GATE 2021 Answer Key for Engineering Sciences (XE)
Question Type Section Answer Negative
Q. No. Session Marks
MCQ/MSQ/NAT Name Key/Range Marks
21 6 NAT XE-C 2.10 to 2.14 2 0
22 6 NAT XE-C 0.1 to 0.1 2 이
Text of page 5
GATE 2021 Answer Key for Engineering Sciences (XE)
Graduate Aptitude Test in Engineering (GATE 2021)
Paper / Section : Engineering Sciences (XEE) / Solid Mechanics (XE-D)
Question Type Section Answer Negative
Q. No. Session Marks
MCQ/MSQ/NAT Name Key/Range Marks
1 6 MCQ XE-D D 1 1/3
2 6 MCQ XE-D B 1 1/3
3 6 MCQ XE-D A 1 1/3
4 6 MCQ XE-D B 1 1/3
5 6 MCQ XE-D B 1 1/3
6 6 MCQ XE-D A 1 1/3
7 6 MCQ XE-D C 1 1/3
8 6 MCQ XE-D A 1 1/3
9 6 NAT XE-D 14.30 to 14.35 1 이
OT a XE-D 7
2/3
11 6 MCQ XE-D A 2 2/3
12 6 MCQ XE-D B 2 2/3
13 6 MCQ XE-D A 2 2/3
14 6 MCQ XE-D A 2 2/3
15 6 MCQ XE-D A 2 2/3
16 6 NAT XE-D 30 to 30 2 0
17 6 NAT XE-D 9 to 9 2 이
18 6 NAT XE-D 56.50 to 56.60 2 이
19 6 NAT XE-D 90.60 to 90.65 2 0
20 6 NAT XE-D 4.17 to 4.21 2 0
21 6 NAT XE-D 0.80 to 0.90 2 0
22 6 NAT XE-D 0.00 to 0.01 2
Text of page 6
GATE 2021 Answer Key for Engineering Sciences (XE)
Graduate Aptitude Test in Engineering (GATE 2021)
Paper / Section : Engineering Sciences (XEE) / Thermodynamics (XE-E)
Question Type Section Answer Negative
Q. No. Session Marks
MCQ/MSQ/NAT Name
e Key/Range Marks
1 6 MCQ XE-E C 1 1/3
2 6 MCQ XE-E B 1 1/3
3 6 MCQ XE-E C 1 1/3
4 6 MCQ XE-E D 1 1/3
5 6 MCQ XE-E B 1 1/3
6 6 MCQ XE-E C 1 1/3
7 6 MCQ XE-E C 1 1/3
8 6 MSQ XE-E B; C 1 0
159.00 to
9 6 NAT XE-E 1 이
162.00
10 6 MCQ XE-E B 2 2/3
11 6 MCQ XE-E A 2 2/3
12 6 MCQ XE-E C 2 2/3
13 6 MCQ XE-E A 2 2/3
100.79 to
14 6 NAT XE-E 2 0
111.39
0.300 to
15 6 NAT XE-E 2 0
0.330
16 6 NAT XE-E 12.1 to 13.0 2 0
418.0 to
17 6 NAT XF-F 2 Ο
422.0
320.0 to
18 6 NAT XE-E 2 0
323.0
56.80 to
19 6 NAT XE-E 2 0
62.78
86.66 to
20 6 NAT XE-E 2 0
95.78
773.0 to
21 6 NAT XE-E 2 0
775.0
22 6 NAT XE-E 59.0 to 61.0 2 0
Text of page 7
GATE 2021 Answer Key for Engineering Sciences (XE)
Graduate Aptitude Test in Engineering (GATE 2021)
Paper / Section: Engineering Sciences (XE) / Polymer Science and Engineering (XE-F)
Question Type Section Answer Negative
Q. No. Session Marks
MCQ/MSQ/NAT N ame Key/Range Marks
1 6 MCQ ☑CE-F C 1 1/3
2 6 MCQ CE-F D 1 1/3
3 6 MCQ ☑
CE-F C 1 1/3
4 6 MCQ CE-F B 1 1/3
5 6 MCQ XCE-F D 1 1/3
6 6 MCQ ☑CE-F C 1 1/3
7 6 MCQ CE-F B 1 1/3
8 6 MCQ ☑CE-F B 1 1/3
9 6 MCQ ☑CE-F A 1 1/3
10 6 MCQ ☑CE-F B 2 2/3
11 6 MCQ ☑CE-F A 2 2/3
12 6 MCQ ☑CE-F B 2 2/3
18000 to
13 6 NAT CE-F 2 0
19000
14 6 NAT CE-F 50.4 to 50.6 2 0
15 6 NAT CE-F 5.00 to 7.00 2 이
16 6 NAT ☑CE-F 62 to 99 2 0
17 6 NAT ☑CE-F 1.980 to 2.040 2 이
18 6 NAT ☑
CE-F 6.00 to 7.00 2 0
19 6 NAT CE-F 100 to 100 2 0
10000
20 6 NAT ☑CE-F 2 0
to10500
21 6 NAT CE-F 4000 to 4200 2 이
22 6 NAT ☑CE-F 1.000 to 1.500 2 0
Text of page 8
GATE 2021 Answer Key for-Engineering Sciences (XE)
Graduate Aptitude Test in Engineering (GATE 2021)
Paper / Section: Engineering Sciences (XEE) / Food Technology (XE-G)
Question Type Section Answer Negative
Q. No. Session Marks
MCQ/MSQ/NAT Name
e Key/Range Marks
1 6 MCQ XE-G B 1 1/3
2 6 MCQ XE-G D 1 1/3
3 6 MCQ XE-G A 1 1/3
4 6 MCQ XE-G B 1 1/3
5 6 MCQ XE-G B 1 1/3
6 6 MCQ XE-G D 1 1/3
7 6 MCQ XE-G D 1 1/3
8 6 MCQ XE-G C 1 1/3
9 6 MCQ XE-G D 1 1/3
10 6 MCQ XE-G A 2 2/3
11 6 MCQ XE-G B 2 2/3
12 6 MCQ XE-G B 2 2/3
13 6 MSQ XE-G A; D 2 0
14 6 MSQ XE-G A; B 2 이
15 6 MSQ XE-G A; C 2 0
16 6 MSQ XE-G A; B; D 2 0
17 6 MSQ XE-G A: B 2 이
18 6 MSQ XE-G A; C 2 0
19 6 MSQ XE-G A; C 2 0
20 6 NAT XE-G 1900 to 1910 2 0
21 6 NAT XE-G 0.135 to 0.150 2 이
22 6 NAT XE-G 2.20 to 2.40 2 0
Text of page 9
- Engineering Sciences (XE)
GATE 2021 Answer Key fom
Graduate Aptitude Test in Engineering (GAT E 2021)
Paper / Section: Engineering Sciences (XE) / Atmospheric and Oceanic Sciences (ХЕ-H
Question Type Sec
ction Answer
Marks
Negative
Q. No. Session
MCQ/MSQ/NAT Name Key/Range Marks
1 6 MCQ XE
E-H B 1 1/3
2 6 MCQ XEE-H C 1 1/3
3 6 MCQ XE
E-H B 1 1/3
4 6 MCQ XE-H C 1 1/3
5 6 MCQ XE
E-H C 1 1/3
6 6 MSQ XEE-H A 1 이
7 6 MSQ XEE-H A; C 1 이
8 6 NAT E-H
XE 1.7 to 1.9 1 0
MAT YE 9 to 11 1
10 6 MCQ XE
E-H C 2 2/3
11 6 MSQ E-H
XE A; C 2 0
12 6 MSQ XE-H A; C 2 0
13 MSQ XE
E-H A; D 2 0
14 6 MSQ XE
E-H A; B 2 이
15 6 MSQ XEE-H A; D 2 0
16 6 NAT E-H
XE 0.4 to 0.6 2 0
17 6 NAT XE
E-H 4450 to 4550 2 0
18 6 NAT XEE-H 0.009 to 0.011 2 0
19 6 NAT XEE-H 4 to 6 2 0
20 6 NAT XEE-H 32 to 34 2 0
21 6 NAT XE
E-H 1.6 to 1.8 2 0
Text of page 10
-Engineering Sciences (XE)
GATE 2021 Answer Key fom
Question Type Sec
ction Answer Negative
Q. No. Session Marks
MCQ/MSQ/NAT Name Key/Range Marks
39990 to
22 6 NAT XE
E-H 2 이
40010Page 1 of 93
Source: GATE. Question paper published by GATE.