Short Summary
GATE 2021 Computer Science and Information Technology Engineering Section-I Previous Year Paper
General Aptitude (GA)
Q.1 – Q.5 Multiple Choice Question (MCQ), carry ONE mark each (for each wrong answer: – 1/3).
 Q.1 |
The ratio of boys to girls in a class is 7 to 3. Among the options below, an acceptable value for the total number of students in the class is: |
(A) |
21 |
(B) |
37 |
(C) |
50 |
(D) |
73 |
| Q.2 |
A polygon is convex if, for every pair of points, P and Q belonging to the polygon, the line segment PQ lies completely inside or on the polygon. Which one of the following is NOT a convex polygon?  |
| Q.3 |
Consider the following sentences:Everybody in the class is prepared for the exam.Babu invited Danish to his home because he enjoys playing chess. Which of the following is the CORRECT observation about the above two sentences? |
(A) |
(i) is grammatically correct and (ii) is unambiguous |
(B) |
(i) is grammatically incorrect and (ii) is unambiguous |
(C) |
(i) is grammatically correct and (ii) is ambiguous |
(D) |
(i) is grammatically incorrect and (ii) is ambiguous |
| Q.4 |
 A circular sheet of paper is folded along the lines in the directions shown. The paper, after being punched in the final folded state as shown and unfolded in the reverse order of folding, will look like____. |
(A) |
 |
(B) |
 |
(C) |
 |
(D) |
 |
| Q.5 |
_______is to surgery as writer is to__________ Which one of the following options maintains a similar logical relation in the above sentence? |
(A) |
Plan, outline |
(B) |
Hospital, library |
(C) |
Doctor, book |
(D) |
Medicine, grammar |
Q. 6 – Q. 10 Multiple Choice Question (MCQ), carry TWO marks each (for each wrong answer: – 2/3).
| Q.6 |
We have 2 rectangular sheets of paper, M and N, of dimensions 6 cm x 1 cm each. Sheet M is rolled to form an open cylinder by bringing the short edges of the sheet together. Sheet N is cut into equal square patches and assembled to form the largest possible closed cube. Assuming the ends of the cylinder are closed, the ratio of the volume of the cylinder to that of the cube is________ |
(A) |
𝜋2 |
(B) |
3𝜋 |
(C) |
9𝜋 |
(D) |
3𝜋 |
| Q.7 |
temsCost (₹) P5,400—5, Profit%Marked Price (₹) 860Q—2510,000 The discount on item Q as a percentage of its marked price, is _________ |
(A) |
25 |
(B) |
12.5 |
(C) |
10 |
(D) |
5 |
| Q.8 |
There are five bags each containing identical sets of ten distinct chocolates. One chocolate is picked from each bag. The probability that at least two chocolates are identical is____ |
(A) |
0.3024 |
(B) |
0.4235 |
(C) |
0.6976 |
(D) |
0.8125 |
| Q.9 |
Statement 1: All bacteria are microorganisms. Statement 2: All pathogens are microorganisms. Conclusion I: Some pathogens are bacteria. Conclusion II: All pathogens are not bacteria. |
(A) |
Only conclusion I is correct |
(B) |
Only conclusion II is correct |
(C) |
Either conclusion I or II is correct. |
(D) |
Neither conclusion I nor II is correct. |
| Q.10 |
Some people suggest anti-obesity measures (AOM) such as displaying calorie information in restaurant menus. Such measures sidestep addressing the core problems that cause obesity: poverty and income inequality. Which one of the following statements summarizes the passage? |
(A) |
The proposed AOM addresses the core problems that cause obesity. |
(B) |
If obesity reduces, poverty will naturally reduce, since obesity causes poverty. |
(C) |
AOM are addressing the core problems and are likely to succeed. |
(D) |
AOM are addressing the problem superficially. |
Computer Science and Information Technology
Q.1 – Q.10 Multiple Choice Question (MCQ), carry ONE mark each (for each wrong answer: – 1/3).
Q.11 – Q.15 Multiple Select Question (MSQ), carry ONE mark each (no negative marks).
Q.16 – Q.25 Numerical Answer Type (NAT), carry ONE mark each (no negative marks).
Q.26 – Q.39 Multiple Choice Question (MCQ), carry TWO marks each (for each wrong answer: – 2/3).
Q.40 – Q.47 Multiple Select Question (MSQ), carry TWO mark each (no negative marks).
Q.48 – Q.55 Numerical Answer Type (NAT), carry TWO mark each (no negative marks).
Answer Key
| Q.No. | Ans | Q.No. | Ans | Q.No. | Ans | Q.No. | Ans | Q.No. | Ans | Q.No. | Ans | Q.No. | Ans |
| 1 | C | 1 | C | 11 | A; C | 21 | 86 to 86 | 31 | A | 41 | B | 51 | 50 to 50 |
| 2 | A | 2 | C | 12 | D | 22 | 17 to 17 | 32 | B | 42 | B; C; D | 52 | 3 to 3 |
| 3 | C | 3 | D | 13 | A | 23 | 819 to 820 OR 205 to 205 | 33 | A | 43 | C | 53 | 17160 to 17160 |
| 4 | A | 4 | C | 14 | A; C | 24 | -7.75 to -7.75 | 34 | B | 44 | A; B; C | 54 | 0.04 to 0.04 |
| 5 | C | 5 | C | 15 | A; C | 25 | 12 to 12 | 35 | D | 45 | A; C | 55 | 50 to 50 |
| 6 | C | 6 | A | 16 | 11 to 11 | 26 | B | 36 | A | 46 | A; B; D | ||
| 7 | C | 7 | B | 17 | 3 to 3 | 27 | C | 37 | B | 47 | C | ||
| 8 | C | 8 | C | 18 | 0.35 to 0.39 | 28 | A | 38 | D | 48 | 1023 to 1023 | ||
| 9 | C OR D | 9 | C | 19 | 65 to 65 | 29 | A | 39 | A | 49 | 50 to 52 | ||
| 10 | D | 10 | D | 20 | 0.25 to 0.25 | 30 | C | 40 | A; C | 50 | 6 to 6 |
