💻 COMPUTISM LAB CLASS 5 — COMPLETE SOLUTION
SECTION A — Fill in the Blanks
10 Marks
The questions on the page are listed in Section A.
- The term software was first used by John W. Tukey in 1957.
- An operating system acts like a manager managing a computer's tasks.
- The default tab stop in Microsoft Word is set at every 0.5 inch.
- First-generation computers were based on vacuum tubes.
- Charles Babbage is considered the father of computers.
- The Superscript option places the selected text slightly above the baseline.
- Application software cannot run without system software.
- ENIAC consisted of about 18,000 vacuum tubes and weighed about 30 tons.
- The shortcut key to use the Find feature in MS Word is Ctrl + F.
- Fourth-generation computers are based on microprocessors using VLSI (Very Large Scale Integration) circuits.
SECTION B — Multiple Choice Questions
20 Marks
The paper contains 20 MCQs.
| Q. | Correct Answer |
|---|---|
| 1 | b. Abacus |
| 2 | b. Blaise Pascal |
| 3 | b. ENIAC |
| 4 | b. Second Generation |
| 5 | c. Third |
| 6 | a. FORTRAN |
| 7 | b. Two |
| 8 | b. Windows |
| 9 | b. VisiCalc |
| 10 | b. Compression |
| 11 | b. Defragmentation |
| 12 | a. Format Painter |
| 13 | b. Top |
| 14 | c. Layout tab |
| 15 | b. Portrait |
| 16 | b. This Device |
| 17 | a. Interpreter |
| 18 | b. Internet of Things (IoT) |
| 19 | b. Ctrl + H |
| 20 | b. Tabulating Machine |
Some important explanations
Q1. First mechanical calculating device
The Abacus is an ancient calculating device and is commonly regarded as the earliest calculating device.
Answer: b. Abacus
Q2. Pascaline
The Pascaline was invented by Blaise Pascal.
Answer: b. Blaise Pascal
Q3. First general-purpose electronic digital computer
ENIAC stands for Electronic Numerical Integrator and Computer.
Answer: b. ENIAC
Q4. Transistors
Transistors replaced vacuum tubes in the second generation of computers.
Answer: b. Second Generation
Q5. Integrated Circuits
Integrated Circuits were the main technology of third-generation computers.
Answer: c. Third
Q6. High-level language
FORTRAN was developed during the second generation of computers.
Answer: a. FORTRAN
Q9. First spreadsheet
VisiCalc is widely recognized as the first spreadsheet program.
Answer: b. VisiCalc
Q10. File-size reduction
Compression reduces the size of files to save storage space.
Answer: b. Compression
Q11. Fragmented data
Rearranging fragmented data into contiguous blocks is called defragmentation.
Answer: b. Defragmentation
Q19. Replace
The shortcut key for Replace in Microsoft Word is:
Ctrl + H
SECTION C — Assertion-Based MCQs
10 Marks
The paper contains 10 assertion-reason questions.
1. Operating System
Assertion: An operating system acts as a bridge between the user and computer hardware.
Reason: Without an operating system, a computer cannot manage its internal activities or run applications.
✅ Answer: a. Both A and R are true, and R is the correct explanation of A.
2. First Generation Computers
Assertion: First-generation computers produced massive heat and burnt out frequently.
Reason: They were built using thousands of vacuum tubes.
✅ Answer: a. Both A and R are true, and R is the correct explanation of A.
3. Application Software
Assertion: Application software can run independently without any system software.
Reason: System software controls the overall operations and manages system resources for application programs.
The assertion is false, while the reason is true.
✅ Answer: c. A is false, but R is true.
4. Defragmentation
Assertion: Defragmentation speeds up data retrieval on a hard disk.
Reason: It consolidates scattered file pieces into a single contiguous area.
Both are true, and the reason explains how defragmentation can improve retrieval efficiency.
✅ Answer: a. Both A and R are true, and R is the correct explanation of A.
5. Artificial Intelligence
Assertion: Computers possess real human thinking and emotions.
Reason: Artificial intelligence enables computers to solve complex problems and learn from patterns.
The assertion is false. AI can process information and learn patterns, but computers do not possess real human emotions.
✅ Answer: c. A is false, but R is true.
6. Format Painter
Assertion: The Format Painter tool copies text formatting from one place and applies it to another.
Reason: It copies font styles, sizes, colors, and border settings effortlessly.
Both statements are true and the reason explains the assertion.
✅ Answer: a. Both A and R are true, and R is the correct explanation of A.
7. Page Orientation
Assertion: The default page orientation in MS Word is Landscape.
Reason: Portrait orientation prints text vertically along the longer side of the page.
The assertion is false. The default orientation is Portrait, while the reason is true.
✅ Answer: c. A is false, but R is true.
8. Virtual Reality
Assertion: Virtual Reality (VR) immerses a user in a completely different digital environment using a special headset.
Reason: Augmented Reality (AR) adds digital elements directly into the real physical world.
Both statements are true. However, the reason describes AR, while the assertion describes VR.
The options explicitly recognize this distinction.
✅ Answer: a. Both A and R are true, and R explains AR while A explains VR.
9. Backup
Assertion: A backup utility helps protect against data loss if a hard disk fails.
Reason: Backups create duplicate copies of important data on secondary storage devices.
Both are true, and the reason explains the assertion.
✅ Answer: a. Both A and R are true, and R is the correct explanation of A.
10. Third Generation Computers
Assertion: Third-generation computers replaced transistors with Integrated Circuits (ICs).
Reason: ICs made computers larger, slower, and more expensive than second-generation machines.
The assertion is true, but the reason is false. ICs generally made computers smaller, faster and more reliable.
✅ Answer: b. A is true, R is false.
SECTION D — TRUE OR FALSE
10 Marks
The 10 statements are given in Section D of the examination page.
| No. | Statement | Answer |
|---|---|---|
| 1 | Abacus was the first mechanical device invented to perform calculations. | ❌ False |
| 2 | Computers do not need electrical power or internet connection to operate. | ❌ False |
| 3 | System software runs in the background and users cannot interact directly with it. | ❌ False |
| 4 | Disk Cleanup helps free up hard drive space by removing unwanted temporary files. | ✅ True |
| 5 | You cannot insert a line break in the middle of a sentence in Word. | ❌ False |
| 6 | The Superscript option places selected text slightly below the baseline. | ❌ False |
| 7 | Charles Babbage is known as the father of modern computers. | ✅ True |
| 8 | Fourth-generation computers use microprocessors based on VLSI circuits. | ✅ True |
| 9 | The Columns option allows you to format document text in newspaper style. | ✅ True |
| 10 | Computers possess real instincts and can experience feelings like happiness or sadness. | ❌ False |
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