CBSE-CS · Data Structures

Stack using Python list questions with answers

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PRACTICE PREVIEW

Five questions to begin your revision

Open each answer only after choosing your own response.

01Medium · ✦ AI-labelled practice

A stack contains [2, 5, 8] from bottom to top. After push(11), which value will pop() remove first?

  1. 11
  2. 2
  3. 5
  4. 8
Check answer and explanation +
A — 11

A stack follows LIFO. 11 was pushed last, so it is removed first.

Source: CBSE Computer Science (083) curriculum 2026–27 · original syllabus-aligned practice
02Easy · ✦ AI-labelled practice

A stack contains [3, 6, 9] from bottom to top. After push(12), which value will pop() remove first?

  1. 3
  2. 6
  3. 9
  4. 12
Check answer and explanation +
D — 12

A stack follows LIFO. 12 was pushed last, so it is removed first.

Source: CBSE Computer Science (083) curriculum 2026–27 · original syllabus-aligned practice
03Easy · ✦ AI-labelled practice

A stack contains [4, 7, 10] from bottom to top. After push(13), which value will pop() remove first?

  1. 7
  2. 10
  3. 13
  4. 4
Check answer and explanation +
C — 13

A stack follows LIFO. 13 was pushed last, so it is removed first.

Source: CBSE Computer Science (083) curriculum 2026–27 · original syllabus-aligned practice
04Medium · ✦ AI-labelled practice

A stack contains [5, 8, 11] from bottom to top. After push(14), which value will pop() remove first?

  1. 11
  2. 14
  3. 5
  4. 8
Check answer and explanation +
B — 14

A stack follows LIFO. 14 was pushed last, so it is removed first.

Source: CBSE Computer Science (083) curriculum 2026–27 · original syllabus-aligned practice
05Easy · ✦ AI-labelled practice

A stack contains [6, 9, 12] from bottom to top. After push(15), which value will pop() remove first?

  1. 15
  2. 6
  3. 9
  4. 12
Check answer and explanation +
A — 15

A stack follows LIFO. 15 was pushed last, so it is removed first.

Source: CBSE Computer Science (083) curriculum 2026–27 · original syllabus-aligned practice
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