Computer Science Class 9 Chapter 5 MCQs With 3 Tests

9th Class Computer Science Chapter 5 Number Systems MCQs TEST 1:

Computer Science Chapter 5 – Number Systems Test 1

1 / 20

The ASCII is a code?

5 bit

6 bit

7 bit

8 bit

2 / 20

The EBCDIC is a code?

5 bit

6 bit

7 bit

8 bit

3 / 20

The collection of facts and figures is called?

Information

Statistics

Mathematics

Data

4 / 20

The data after processing is called?

Information

Processed

Percentage

Information

5 / 20

The set of characters including 26 characters of English alphabets and 10 decimal digits is called?

Numeric data

Alphabet data

Alphanumeric

A11

6 / 20

Computers directly understand digits?

Decimal

Binary

Octal

Hexadecimal

7 / 20

Computer did not directly understand?

Letters

Decimal

Both a b

None

8 / 20

45, 26, 15, 40 is a?

Arranged data

Mechanical

Raw

Fixed

9 / 20

Data is classified into typed?

None

10 / 20

Binary numbers are?

1,3

0,10

0, 1

1,1

11 / 20

Real data contains numbers, which may be?

Fractions

Whole Numbers

Both a b

None

12 / 20

The base of decimal number system is?

13 / 20

The data is represented on a computer by means of a two state ON and OFF system called?

A word

Binary system

Octal system

ROM

14 / 20

The base of binary number system is?

15 / 20

The base of octal number system is?

16 / 20

The binary number system is used in?

Analog computers

Binary computers

Decimal computers

Digital computers

17 / 20

The base of hexadecimal number system is?

18 / 20

Alphanumeric characters are expressed in terms of binary codes. In ASCII each character is represented as a?

8 bit code

4 bit code

2 bit code

7 bit

19 / 20

2’s complement of 1011.1 is?

0. 100. 10

0100.1

1011.10

0100.0

20 / 20

I’s complement of 1011.1 is?

0. 100.101

0100.11

1011.10

0100.0

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9th Class Computer Science Chapter 5 Number Systems MCQs TEST 2:

Computer Science Chapter 5 – Number Systems Test 2

1 / 15

A byte consist of nibbles?

2 / 15

10° =?

101

3 / 15

The digit from 0 to 9 are called?

Decimal

Octal

Binary

Hexa

4 / 15

The binary equivalent of ( 20)₁₀is?

1111

10011

10010

10100

5 / 15

The decimal equivalent of ( 20)₁₀ is?

invalid

6 / 15

Decimal number system consists of?

0,1,2,3,4,5

0,1,2,3,4,5,6

0,1,2,3,4,5,6,7,

0,1,2,3,4,5,6,7,8,9

7 / 15

453 =?

4 x 102 + 5 x 10 + 3

10 x 42 + 5 x 10

4 x 102+ 5 x 10 1 + 3 x 100

None

8 / 15

The decimal equivalent of (10)_s is?

9 / 15

(236)₁₀ = (?) _{10 ?}

158

157

155

236

10 / 15

(A)₁₆=?

11 / 15

In 645 the most significant digit is?

12 / 15

In 724 the least significant digit is?

13 / 15

The number system that contains the range of 10 number and 6 alphabets is?

Decimal

Octal

Binary

Hexa

14 / 15

(0001)₂= (?)

15 / 15

Binary digits are denoted by?

IBT

TBI

BIT

BTI

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9th Class Computer Science Chapter 5 Number Systems MCQs TEST 3:

Computer Science Chapter 5 – Number Systems Test 3

1 / 15

01001₍₂₎ in decimal system is equal to?

2 / 15

I’s complement of 01110 is?

00011

10001

11001

01010

3 / 15

In binary number system 0 + 0 =?

4 / 15

In binary number system 1 X 0 =?

5 / 15

ASCII for 6 is equal to?

0110001

0110110

1101100

0011010

6 / 15

Which of the following is not a real number?

76.2

6.2

4.0

7 / 15

In Hexadecimal number system the value of E is?

8 / 15

The value of hexadecimal digit A is ?

9 / 15

The number 822 represent the?

Binary number

Octal Number

Decimal

None

10 / 15

Add 01011101 and 00110010?

100111

1010101

10001111

100011111

11 / 15

The binary equivalent of decimal number (3)₁₀ is?

111

101

12 / 15

The binary equivalent of (F)16 is ?

1010

1110

0111

1111

13 / 15

The hexadecimal equivalent of binary number (101001)₂ is?

14 / 15

The most commonly used character for transmission are?

EBCDIC

BCD

UNI

ASCII

15 / 15

In scientific notation power of 10 is called?

Logarithm

Exponent

Mantissa

Coefficient

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