Computer Science Number System Class 11 MCQ
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 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 Class 11 MCQ
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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 Class 11 MCQ
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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
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