50 Best MCQ Computer Science Number System Class 11

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Computer Science Number System Class 11 MCQ

Computer Science Number System
Computer Science Number System

Q1. Which of the following number system is known as base-10 system.

a. Binary Number System

b. Hexadecimal Number System

c. Octal Number System

d. Decimal Number System

Q2. Every number system has a set of unique characters or literals. The count of these literals is called ____

a. matrix

b. radix

c. radical

d. exponent

Q3. Which of the following is not a number system in reference to computer?

a. Binary number system

b. Decimal number system

c. Octal number system

d. Penta number system

Q4. Which two numbers form the binary number system?

a. 0 and 2

b. 1 and 2

c. 0 and 1

d. 1 and 3

Q5. Binary number system is also referred as ___________________

a. base-2 system

b. base-8 system

c. base-10 system

d. base-16 system

Computer Science Number System Class 11 MCQ

Q6. Which of the following is not an examples of binary numbers?

a. 010101

b. 11100.01

c. 111001

d. None of the above

Q7. Decimal number system has ________ digits

a. 8

b. 7

c. 19

d. 10

Q8. Octal number system has digits from _____

a. 0 – 7

b. 1 – 7

c. 1- 8

d. 0- 9

Q9. Which of the following is not an example of Octal number?

a. 123

b. 478

c. 372

d. 136

Q10. Hexadecimal number system consist of _________ unique symbols?

a. 8

b. 16

c. 10

d. 2

Computer Science Number System
Computer Science Number System

Computer Science Number System Class 11 MCQ


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Computer Science Number System Class 11 MCQ

Q11. In hexadecimal system, each alphanumeric digit is represented as a group of _____________ binary digits

a. 1

b. 2

c. 3

d. 4

Q12. Which of the following is not an example of Hexadecimal number?

a. 1C2

b. 2A.1

c. 1ABCD

d. 67GA

Q13. Which of the following symbol is not a part of Hexadecimal number system?

a. 0

b. 9

c. 10

d. A

Q14. Which Hexadecimal symbol is used for decimal number 15?

a. A

b. C

c. E

d. F

Q15. 4 bit binary code for binary number 15 is ___________

a. 1110

b. 1111

c. 1100

d. 1101

Q16. Which of the following memory address is easy to remember or compact in size?

a. 16-bit binary address

b. 16-bit Hexadecimal address

c. 16-bit Octal address

d. None of the above

Q17. Which of the following are application of Hexadecimal number system?

a. To simplify the memory address representation

b. Hexadecimal numbers are used for describing the colors on the webpage.

c. Both of the above

d. None of the above

Q18. Which of the following number system is mostly used by humans for their mathematical/calculation work?

a. Binary number system

b. Decimal number system

c. Hexadecimal number system

d. Octal number system

Q19. Which of the following number system is used by digital devices?

a. Binary number system

b. Decimal number system

c. Hexadecimal number system

d. Octal number system

Q20. Which of the following number system is used to simplify the binary representation for us to understand?

a. Hexadecimal number system

b. Octal number system

c. Both of the above

d. None of the above

Computer Science Number System
Computer Science Number System

Computer Science Number System Class 11 MCQ


Click here to check your performance in Computer Science Number System Class 11

Computer Science Number System Class 11 MCQ

Q21. Which of the following sequence is correct to convert decimal number to binary?

Step 1: Note the remainder.
Step 2: Divide the given number by 2.
Step 3: Write the noted remainders in the reverse order (from bottom to top)
Step 4: Keep on dividing the quotient by 2 and note the remainder till the quotient is zero.

a. Step 1, Step 2, Step 3, Step 4

b. Step 2, Step 1, Step 4, Step 3

c. Step 3, Step 2, Step 1, Step 4

d. Step 2, Step 3, Step 1, Step 4

Q22. Binary equivalent of decimal number 65 is __________

a. 1000001

b. 1000000

c. 1000011

d. 100001

Q23. The decimal number is repeatedly divided by _________ to obtain its equivalent octal number.

a. 2

b. 8

c. 10

d. 16

Q24. Octal equivalent of decimal number 122 is __________

a. 172

b. 173

c. 174

d. 171

Q25. Which of the following will occupy more memory space?

a. 1111 (binary number)

b. A2 (Hexadecimal number)

c. 12 (Octal number)

d. None of the above

Q26. Decimal number is repeatedly divided by _________ to obtain its equivalent hexadecimal number.

a. 10

b. 2

c. 8

d. 16

Q27. Hexadecimal equivalent of decimal number 122 is ______

a. 7A

b. 7B

c. 7C

d. 7D

Q28. __________________in a binary number are grouped together to get octal number.

a. 4 bits

b. 2 bits

c. 3 bits

d. 5 bits

Q29. For converting binary to octal, “If number of bits in a binary number is not multiple of 3, then add required number of 0s on ______ of the binary number

a. least significant position

b. most significant position

c. Any of the above

d. None of the above

Q30. _____________ in a binary number are grouped together to get hexadecimal number.

a. 4 bits

b. 2 bits

c. 3 bits

d. 5 bits

Computer Science Number System
Computer Science Number System

Computer Science Number System Class 11 MCQ


Click here to check your performance in Computer Science Number System Class 11

Computer Science Number System Class 11 MCQ

Q31. 4 bit binary value of hexadecimal symbol ‘D’ is _______________

a. 1101

b. 1111

c. 1001

d. 1000

Q32. To convert 110010101101 to hexadecimal value, we make a group of 4 bits from ____________

a. right to left

b. left to right

c. between

d. None of the above

Q33. Which is the Most Significant Bit (MSB) in 010101

a. 0

b. 1

c. Both of the above

d. None of the above

Q34. Which is the Least Significant Bit (LSB) in 010101

a. 0

b. 1

c. Both of the above

d. None of the above

Q35. Equivalent binary number of decimal number 0.25 is ______________

a. 0.11

b. 0.00

c. 0.01

d. 1.00

Q36. Which of the following mathematical operation is used to convert Decimal Number with fractional part only like 0.125 to another Number System

a. Addition

b. Subtraction

c. Multiplication

d. Division

Q37. To convert decimal number 0.675 to octal, we will multiply the fractional part by ______________

a. 2

b. 4

c. 6

d. 8

Q38. To convert binary number 10101100.01011 to octal number, we will make 3-bit groups from ____________ for the integer part and _______ for the fractional part

a. right to left, left to right

b. left to right, right to left

c. right to left, right to left

d. left to right, left to right

Q39. base value of hexadecimal number system is ______

a. 2

b. 10

c. 16

d. 8

Q40. Let X be a number system having B symbols only. Write down the base value of this number system.

a. A

b. B

c. X

d. AB

Computer Science Number System Class 11 MCQ


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Computer Science Number System Class 11 MCQ

Q41. Octal number equivalent to binary number 1110101 is _____

a. 117

b. 165

c. 75

d. 175

Q42. Decimal number equivalent to binary number 1110101 is _____

a. 117

b. 165

c. 75

d. 175

Q43. Hexadecimal number equivalent to binary number 1110101 is _____

a. 117

b. 165

c. 75

d. 175

Q44. Binary representation of the following hexadecimal number is _______________

98E

a. 100110001111

b. 100110001110

c. 100110101110

d. 100110001010

Q45. Decimal representation of the following hexadecimal number is ______________

A.A

a. 10.625

b. 10.125

c. 10.725

d. 10.250

Q46. Octal representation of the following decimal number is _______________

198

a. 310

b. 316

c. 306

d. 326

Q47. Hexadecimal representation of the following decimal number is ______________

2960

a. B90

b. A90

c. B91

d. A91

Q48. Hexadecimal representation of the following binary number is ______________

1101011.10101

a. 6B.A8

b. 6B.A81

c. 6B.98

d. 6A.A8

Q49. Octal representation of the following binary number is ___________

1111.0101

a. 17.25

b. 17.24

c. 17.26

d. 17.27

Q50. Octal representation of the following hexadecimal number is _______________

A7B

a. 5175

b. 5174

c. 5173

d. 5172

Computer Science Number System Class 11 MCQ


Click here to check your performance in Computer Science Number System Class 11

Computer Science Number System Class 11 MCQ

Disclaimer : I tried to give you the correct solution of “Computer Science Number System Class 11 MCQ , but if you feel that there is/are mistakes in “ Computer Science Number System Class 11 MCQ” given above, you can directly contact me at csiplearninghub@gmail.com. NCERT Book and Study material available on CBSE official website are used as a reference to create above “Computer Science Number System Class 11 MCQ

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