Explore topic-wise MCQs in Computer Science.

This section includes 287 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Science knowledge and support exam preparation. Choose a topic below to get started.

1.

Conversion of an octal number 112 to hexadecimal number is

A. 4A
B. 5A
C. 15
D. 20
E. None of the above
Answer» B. 5A
Discussion
2.

Conversion of decimal number 71 to it's binary number equivalent is

A. 110011
B. 1110011
C. 0110011
D. 1000111
E. None of the above
Answer» E. None of the above
Discussion
3.

Conversion of decimal number 67 to it's octal number equivalent is

A. 100
B. 103
C. 109
D. 99
E. None of the above
Answer» C. 109
Discussion
4.

Conversion of binary number 101000010111 to hexadecimal number is

A. D8F9
B. A8B9
C. A17
D. D9F8
E. None of the above
Answer» D. D9F8
Discussion
5.

Conversion of an octal number 143 to its decimal number is

A. 90
B. 971
C. 99
D. 107
E. None of the above
Answer» D. 107
Discussion
6.

Conversion of binary number 1001001 to hexadecimal is

A. 40
B. 39
C. 49
D. 42
E. None of the above
Answer» D. 42
Discussion
7.

Addition of 10 and 11 is

A. 100
B. 101
C. 111
D. 110
E. None of the above
Answer» C. 111
Discussion
8.

Conversion of decimal number 13 to it's octal number equivalent is

A. 15
B. 17
C. 13
D. 11
E. None of the above
Answer» B. 17
Discussion
9.

Conversion of binary number 101101 to hexadecimal is

A. 37
B. 2D
C. 2E
D. 27
E. None of the above
Answer» C. 2E
Discussion
10.

Conversion of decimal number 99 to it's binary number equivalent is

A. 1100011
B. 100011
C. 1110001
D. 111 1000
E. None of the above
Answer» B. 100011
Discussion
11.

Conversion of decimal number 93 to hexadecimal number is

A. 2D
B. 5D
C. 62
D. 31
E. None of the above
Answer» C. 62
Discussion
12.

Conversion of an octal number 142 to binary number is

A. 1100010
B. 110110
C. 1100011
D. 1101101
E. None of the above
Answer» B. 110110
Discussion
13.

Conversion of hexadecimal number 93FA to it's binary number equivalent is

A. 1001001111111010
B. 10010011111110111
C. 110011111110011
D. 111110000111
E. None of the above
Answer» B. 10010011111110111
Discussion
14.

Subtraction of 100101100 from 1110101010 is

A. 1001011110
B. 0110100001
C. 1111000001
D. 1111011111
E. None of the above
Answer» B. 0110100001
Discussion
15.

Addition of 110101 and 101111 is

A. 1100100
B. 1101000
C. 1110111
D. 110011
E. None of the above
Answer» B. 1101000
Discussion
16.

Conversion of decimal number 99 to it's octal number equivalent is

A. 121
B. 143
C. 124
D. 119
E. None of the above
Answer» C. 124
Discussion
17.

Conversion of binary number 110001 to its decimal number is

A. 27
B. 49
C. 39
D. 50
E. None of the above
Answer» C. 39
Discussion
18.

Conversion of an octal number 134 to a binary number is

A. 001011011
B. 001101100
C. 001011100
D. 110011
E. None of the above
Answer» D. 110011
Discussion
19.

Conversion of decimal number 61 to it's binary number equivalent is

A. 111101
B. 111100
C. 110011
D. 001101
E. None of the above
Answer» B. 111100
Discussion
20.

Multiplication of 47 by 52 is

A. (3144)
B. (4147)
C. (3146)
D. (3184)
E. None of the above
Answer» D. (3184)
Discussion
21.

Conversion of decimal number 42 to it's octal number equivalent is

A. 57
B. 42
C. 47
D. 52
E. None of the above
Answer» E. None of the above
Discussion
22.

Conversion of binary number 1001010 to to its decimal number is

A. 74
B. 97
C. 72
D. 63
E. None of the above
Answer» B. 97
Discussion
23.

Conversion of binary number 110000 to hexadecimal is

A. 30
B. 40
C. 43
D. 27
E. None of the above
Answer» B. 40
Discussion
24.

Conversion of an octal number 106 to binary number is

A. 1110010
B. 1000110
C. 1100110
D. 10000110
E. None of the above
Answer» C. 1100110
Discussion
25.

Conversion of an octal number 60 to binary number is

A. 110000
B. 10011
C. 1100111
D. 1100110
E. None of the above
Answer» B. 10011
Discussion
26.

Conversion of an octal number 7432 to a binary number is

A. 1111000110111
B. 111100011010
C. 110011010111
D. 111111111000
E. None of the above
Answer» C. 110011010111
Discussion
27.

Conversion of an octal number 143 to hexadecimal number is

A. 63
B. 60
C. 50
D. 57
E. None of the above
Answer» B. 60
Discussion
28.

Addition of 1101 and 1010 is

A. 10101
B. 11000
C. 11011
D. 10111
E. None of the above
Answer» E. None of the above
Discussion
29.

Conversion of decimal number 89 it's binary number equivalent is

A. 1011011
B. 1100111
C. 1011001
D. 10011
E. None of the above
Answer» D. 10011
Discussion
30.

Conversion of decimal number 28 to it's octal number equivalent is

A. 32
B. 40
C. 34
D. 36
E. None of the above
Answer» D. 36
Discussion
31.

Division of 100011 by 101 is

A. 100
B. 111
C. 101
D. 1010
E. None of the above
Answer» C. 101
Discussion
32.

Conversion of an octal number 136 to hexadecimal number is

A. 7E
B. 5E
C. 5A
D. 5D
E. None of the above
Answer» C. 5A
Discussion
33.

Conversion of binary number 101101 to its decimal number is

A. 45
B. 43
C. 40
D. 47
E. None of the above
Answer» B. 43
Discussion
34.

Multiplication of 111 by 101 is

A. 110011
B. 100011
C. 111100
D. 000101
E. None of the above
Answer» C. 111100
Discussion
35.

What is the decimal equivalent of 2?

A. 4096
B. 1024
C. 1000
D. 16
E. None of the above
Answer» C. 1000
Discussion
36.

Conversion of binary number 1100011 to hexadecimal is

A. 63
B. 57
C. 46
D. 40
E. None of the above
Answer» B. 57
Discussion
37.

Conversion of binary number 1100011 to its decimal number is

A. 29
B. 97
C. 99
D. 93
E. None of the above
Answer» D. 93
Discussion
38.

Conversion of binary number 1100011 to an octal number is

A. 140
B. 143
C. 147
D. 149
E. None of the above
Answer» C. 147
Discussion
39.

Conversion of binary number 10000000000 to decimal number is

A. 1024
B. 1034
C. 1124
D. 1037
E. None of the above
Answer» B. 1034
Discussion
40.

Conversion of binary number 11111 to an octal number is

A. 35
B. 32
C. 37
D. 42
E. None of the above
Answer» D. 42
Discussion
41.

Conversion of binary number 101110 to an octal number is

A. 35
B. 46
C. 56
D. 50
E. None of the above
Answer» D. 50
Discussion
42.

Conversion of hexadecimal number 6B2 to it's binary number equivalent is

A. 1111000110111
B. 011010110010
C. 0110011001111
D. 11111111
E. None of the above
Answer» C. 0110011001111
Discussion
43.

Conversion of a octal number 63 to its decimal number is

A. 51
B. 61
C. 57
D. 53
E. None of the above
Answer» B. 61
Discussion
44.

Conversion of a hexadecimal number 63 to binary number is

A. 1100111
B. 1100011
C. 111011
D. 1100111
E. None of the above
Answer» C. 111011
Discussion
45.

Conversion of 1011011 to it's decimal equivalent is

A. 81
B. 91
C. 100
D. 200
E. None of the above
Answer» C. 100
Discussion
46.

Conversion of binary number 100011 to an octal number is

A. 43
B. 47
C. 49
D. 50
E. None of the above
Answer» B. 47
Discussion
47.

Conversion of decimal number 99 to hexadecimal number is

A. 63
B. 8
C. 61
D. 50
E. None of the above
Answer» B. 8
Discussion
48.

Conversion of binary number 1101100111111000 to hexadecimal number is

A. D8F8
B. A8B9
C. 789
D. D9F8
E. None of the above
Answer» E. None of the above
Discussion
49.

Addition of 110101101, 111011101, 000111111, 100101101, 111110111 is

A. 1011010111010
B. 1111011000010
C. 1000101000101
D. 01001000000010
E. None of the above
Answer» B. 1111011000010
Discussion
50.

Conversion of binary number 1010000 to an octal number is

A. 119
B. 101
C. 111
D. 120
E. None of the above
Answer» E. None of the above
Discussion