CBSE Class 9 Computer Science Computer Components MCQs Set 01

Question: Motherboard is made up of —————-
a) iron
b) steel
c) sand
d) silicon
Answer: d

Question: Physical parts of the computer that we can touch and feel are known as——-
a) software
b) hardware
c) system
d) monitor
Answer: b

Question: ——————— is a highly complex set of electronic circuitry that executes program instructions.
a) CPU
b) ALU
c) CU
d) RAM
Answer: a

Question: Scanner is used to enter —————- data
a) voice
b) image
c) text
d) alphabetic
Answer: b

Question: CPU consists two main parts———————- and ————————
a) ALU, CU
b) Brain, Body
c) Register, CU
d) ALU, Register
Answer: a

Question: Keyboard is used to input————————– data
a) textual
b) numeric
c) image data
d) voice data
Answer: a

Question: —————— is received to use voice output
a) microphone
b) scanner
c) monitor
d) speaker
Answer: d

Question: A ————- operation is usually a comparison of numbers, letters or special characters.
a) Arithmetic
b) equal
c) logical
d) relational
Answer: c

Question: Address bus carries————————-
a) data
b) signals
c) information
d) address
Answer: d

Question: The process of performing arithmetic and logic operations with the help of computer is known as ——-
a) Data processing
b) EDP
c) information
d) ALU
Answer: b

Question: Computer can be divided into input, output and———————
a) monitor
b) CPU
c) system unit
d) display unit
Answer: b

Question: The ———– consists of circuitry that generates signals to direct the entire computer system to execute the program.
a) CU
b) ALU
c) Cache
d) CPU
Answer: a

Question: ———————– are used to regulate and control the speed of all the operations.
a) clock pluses
b) ALU
c) Register
d) CPU
Answer: a

Question: Organized collection of computer data and instructions is called————–
a) program
b) software
c) hardware
d) firmware
Answer: b

Question: Data bus carries ——————-
a) signals
b) instructions
c) data
d) address
Answer: d

Question: Example of application software is —————————–
a) windows
b) Linux
c) word processor
d) operating system
Answer: c

Question: The most important component of system unit is rigid rectangular circuit board called————-.
a) hardboard
b) motherboard
c) CPU
d) clipboard
Answer: b

Question: The sequence of instructions given to computer for manipulating data is known as——————-
a) code
b) simulator
c) program
d) information
Answer: c

Question: ————– consists of electronic circuitry that executes all arithmetic and logical operations.
a) ALU
b) CU
c) CPU
d) System Unit
Answer: a

Question: —————————- is used to accomplish tasks specified by user.
a) application software
b) system software
c) operating software
d) computer software
Answer: a

Question: There are ——————– different kinds of buses in computer system.
a) one
b) two
c) three
d) four
Answer: c

Question: A ————— is a device that accepts data and processes it for some result based on a sequence of instructions.
a) calculator
b) CPU
c) computer
d) system
Answer: c

Fill in the blanks :-

Question: A_____in general consists of three major units. (i) System unit, (ii) Input units and (iii) Output units.
Answer: computer system

Question: The__________is that part of CPU which controls and coordinates the activities of all other computer units.
Answer: control unit

Question: EPROM stands for____________________________________.
Answer:Erasable programmable read only memory

Question: The_________part of a computer system consists of physical components installed in a main computer box and all associated equipments interconnected in an organized way.
Answer: hardware

Question: A__________is a temporary storage device, which holds data as long as it is being interpreted.
Answer: Register

Question: PROM stands for_____________________________________.
Answer: Programmable read only memory

Question: A_________is a set of instructions in sequence, which tells the computer what to do.
Answer: program