Revision Questions Grade-9

REVISION QUESTIONS Third Mid Term
Subject: Computer Science
Class: IX (Nine)
Time: 50 Minutes
Full Marks: 25
Pass Marks: 10

1. Answer the following questions in short: [10×2=20]

a) What is the difference between hardcopy and softcopy output? Give examples.
b) Define raster graphics and vector graphics with examples.
c) Explain the difference between pre-test loop and post-test loop with examples.
d) What is a nested loop? Explain with an example.
e) Differentiate between selection structure and loop structure.
f) What is the importance of file compression? Name two compressed file formats.
g) What is spoken output? Give an example.
h) What is a high-quality graphics file format? Name two examples.
i) What is the Fibonacci series? Write the first 10 terms of the series.
j) What is the Hailstone series? Explain with an example.

2. Write the appropriate technical term for the following: [4×1=4]

a) The data that is fed into a computer through a scanner.
b) A file format commonly used for compressed image files.
c) A device that produces spoken output from a computer.
d) A storage device that uses flash memory and connects via USB.

3. Write the full forms of the following: [10×1=10]

a) USB
b) JPEG
c) ASCII
d) VDT
e) PNG
f) TIFF
g) HDD
h) MPEG
i) CPU
j) ROM

4. Write QBASIC programs: [7×4=28]

a) To print the series 3, 6, 11, 18, 27, … up to 10 terms.
b) To input three different numbers and print the largest number.
c) Write a program to print the following pattern:

1 

12 

123 

1234 

12345 

The End 

d) Write a QBASIC program to check whether a given number is even or odd.
e) Write a QBASIC program to generate the Fibonacci series up to 10 terms.
f) Write a QBASIC program to generate the Hailstone series for a given number.
g) Write a QBASIC program to print the following reverse pattern:

54321 

5432 

543 

54 

5 

h) Write a program to input three different number and display the middle number.