Computer science class ix notes 9th class board pattern model paper
Computer science Chapter No-05 Important questions, if you attempt these question you will get InshaAllah 100% marks.
(Chapter-05 Number System) Important MCQs
Q.1: Choose the correct option:
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1. The processed
collection of facts and figures is called:
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A. Data
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B. Information
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C. Representation
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D. None of them
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2. The weight of digits-7 in number 57231.21is:
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A. 104
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B. 103
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C. 102
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D. All of them
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3. The equivalent number of 27
in binary is:
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A. 111000
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B. 100100
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C. 011011
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D. None of them
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4. 0.04 is equivalent in decimal is:
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A. 0.3
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B. 0.4
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C. 0.5
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D. None of them
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5. 2’s complement of 01100110 is:
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A. 10011010
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B. 11100101
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C. 10011101
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D. None of them
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6. The product of 0110 and 1011 is:
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A. 1001010
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B. 1000010
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C. 1100010
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D. None of them
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7. Which format is to represent the Fixed Point Number
Representation?
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A. 1 Bits = Sign Bit
9 Bits =
Integral part
6Bits =
Fractional part
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B. 1 Bits = Sign Bit
8 Bits =
Integral part
7Bits =
Fractional part
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C. 1 Bits = Sign Bit
96 Bits =
Integral part
9Bits =
Fractional part
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D. None of them
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8. If sign Bit is O bit then number will be:
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A. Negative
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B. Positive
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C. Zero
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D. None of them
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9. Unicode is …………bit coding scheme.
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A. 8-bit
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B. 16-bit
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C. 24-bit
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D. None of them
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10. What is the equivalent
of 9807 BCD?
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A. 1000
1001
0000
0111
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B. 1001
0000
1000
0111
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C. 1001
1000
0000
0111
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D. None of them
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11.(011)4752105 is:
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A. Numeric Data
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B. Alphabetic Data
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C. Alphanumeric Data
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D. None of them
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12. The Hexadecimal number (10)16 is equal to:
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A. (10)10
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B. (100)10
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C. 16(10)
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D. None of them
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13. Computer manipulate in terms of:
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A. Binary NS
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B. Octal NS
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C. Hexadecimal NS
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D. None of them
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14. In 2’s compliment method , end carry is :
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A. Added
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B. Subtracted
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C. Discarded
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D. None of them
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15. ASCII is a 7- bit Coding System published by:
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A. ISO
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B. IEEE
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C. IANA
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D. Ultraviolet Rays
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Q.2: Answer the following short questions: (Any Ten)
1. Convert A1.03 into Binary.
2. Convert
11010.11 into Octal.
- Represent 36.25 in 16-bit Fixed Point Form.
- Define the term Number System? Also state which Number System is recognized by the computer system?
- What is the difference between Integer Data and Alphanumeric Data?
- Convert 1110.11 into decimal number system.
- Find 2’s Complement of 76 using 10-bits.
- What is the difference between MSB and LSB?
- Define Unicode.
- Calculate 0110 X 1011
Q.3: Calculate - 54 - 30 using 8-bits 2’s complement method.
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