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Class 9 Computer Science — Chapter 1: Computer System Organization
8 practice questions · 3 Easy · 3 Medium · 2 Hard
Free NCERT-aligned multiple-choice practice for Class 9 Computer Science, Chapter 1 (Computer System Organization). Practise timed Easy, Medium and Hard quizzes with instant explanations — built for CBSE Board exams, JEE Main and NEET UG. Here are a few sample questions; sign in free to practise all 8.
Sample questions
Q1Easy
Which is an operating system?
A.MS Word
B.Windows✓ correct
C.Chrome
D.Photoshop
Why
Windows, Linux, macOS are OSes; the rest are application software.
Q2Medium
The CPU's three main parts are:
A.ALU, CU, Registers✓ correct
B.RAM, ROM, Cache
C.Mouse, Keyboard, Monitor
D.HDD, SSD, USB
Why
Arithmetic-Logic Unit, Control Unit, Registers.
Q3Hard
Which statement is TRUE?
A.ROM is volatile, RAM is non-volatile
B.Both RAM and ROM are volatile
C.RAM is volatile, ROM is non-volatile✓ correct
D.Neither is memory
Why
RAM loses data on power-off; ROM retains it.
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