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Computer MCQs for Competitive Exams, Computer Science MCQS, PPSC Computer Operator Past Papers MCQS 2026, PPSC Past Papers & Solved MCQs, PPSC Past Papers 2026 Solved | By

Which unit of a computer is used for arithmetic operations?

A. CU
B. ALU
C. RAM
D. ROM
Correct Answer: B. ALU

Correct answer: ALU. The ALU (Arithmetic Logic Unit) performs arithmetic and logical operations.

  • CU: The CU (Control Unit) directs the operations of the computer.
  • RAM: RAM temporarily stores data and programs.
  • ROM: ROM permanently stores startup instructions.

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