Class 9th CBSE

chapter :- 2 Number System

chapter :- 2 Number System

Multiple Choice Question

1.A ________ is a man-made electronic machine that understand the language people use to communication with each other.
a. Computer
b. Calculator
c.software
d.files

2. Computer recognize only two discrete states : _____ and ____
a. ON/OFF
b. Right/Wrong
c.Pull/Push
d.Start/Stop

3. When people count, they use the digits in the ________ System.
a. Hexadecimal
b. Octal
c.Decimal
d.Binary

4. A _______ is the smallest unit of data that the computer can represent.
a. data
b. value
c.bit
d.byte

5. When eight bits are grouped together as a unit , they form a ______.
a. data
b. value
c.bit
d.byte

6. ASCII stand for _________.
a. American Stand Code for Information Interchange
b. American Standard Coding for Information Interchange c.American Standard Code for Info Interchange
d.American Standard Code for Information Interchange

7. ________ is a way to represent number in a computer system.
a. Binary System
b. Number System
c.Value System
d.Positional System

8. There are ________ type of Number System.
a. 3
b. 2
c.4
d.5

9. In a positional number system there are only a few symbols called ________.
a. binary
b. bin
c.digit
d.data

10. The decimal number system is a base of _______
a. 10
b. 2
c.8
d.16

11. The _______ number system is a base of 10.
a. Hexadecimal
b. Octal
c.Decimal
d.Binary

12. The binary number system is a base of _______
a. 10
b. 2
c.8
d.16

13. The _______ number system is a base of 2.
a. Hexadecimal
b. Octal
c.Decimal
d.Binary

14. The Octal number system is a base of _______
a. 10
b. 2
c.8
d.16
15. The _______ number system is a base of 8.
a. Hexadecimal
b. Octal
c.Decimal
d.Binary

16 The Hexadecimal number system is a base of _______
a. 10
b. 2
c.8
d.16

17.The _______ number system is a base of 16.
a. Hexadecimal
b. Octal
c.Decimal
d.Binary

18. A ________ refers to a Binary Digit in the binary System.
a. data
b. value
c.bit
d.byte

19.A _______ is a collection of bits on a 4-bit boundaries.
a. data
b. nibble
c.bit
d.byte

20. If the last digit of a binary number is 1 , the number is _______
a. Nibble
b. Even/Odd
c.Odd
d.Even

21. The conversion of Decimal to Hexadecimal , we have to divide the decimal number using ____.
a. 10
b. 2
c.8
d.16

22. The conversion of Decimal to Octal , we have to divide the decimal number using ____.
a. 10
b. 2
c.8
d.16

23.The conversion of Decimal to Binary , we have to divide the decimal number using ____.
a. 10
b. 2
c.8
d.16

24. An _________ digit binary number can be represented by a two-digit hexadecimal.
a. 10
b. 2
c.8
d.16

25. Bi means _________
a. two
b. three
c.four
d.five

26. Deci means _______
a. two
b. three
c.ten
d.five

27. In the past human beings counted on ________.
a. count
b. pen
c.paper
d.finger

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