Values and Data Types

Chapter 3

Values and Data Types

Class 10 - Logix Kips ICSE Computer Applications with BlueJ

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Multiple Choice Questions

Question 1

Java uses ........... character set.

1. ASCII Only
2. Extended ASCII Only
3. Unicode ✔
4. None of these

Question 2

ASCII stands for ...........

1. American Standard Code for Information Interchange ✔
2. American Simulated Code for Information Interchange
3. American Standard Code for Interchange of Information
4. American Standard Code for Interaction of Information

Question 3

ASCII is ...........

1. 6-bit set of codes
2. 8-bit set of codes
3. 7-bit set of codes ✔
4. 16-bit set of codes

Question 4

Extended ASCII is ...........

1. 6-bit set of codes
2. 8-bit set of codes ✔
3. 7-bit set of codes
4. 16-bit set of codes

Question 5

The smallest individual component in a program is called ...........

1. Token ✔
2. Identifier
3. Keyword
4. Method

Question 6

Which of the following is not a token?

1. Keyword
2. Identifier
3. Operator
4. Procedure ✔

Question 7

Which of the following is a keyword?

1. character
2. break ✔
3. object
4. attribute

Question 8

Which of the following is not a legal identifier?

1. _room
2. $PayAmount
3. 10thClass ✔
4. nullValue

Question 9

Which of the following is a default value of float data type?

1. 0
2. 0float
3. 0f
4. 0.0f ✔

Question 10

Which of the following is a default value of boolean data type?

1. true
2. false ✔
3. null
4. void

Question 11

Which of the following is an invalid integer?

1. 2222
2. 22222
3. 222 22 ✔
4. 222

Question 12

Which of the following is not a character literal?

1. '\n'
2. "n" ✔
3. 'n'
4. All of these

Question 13

Which of the following punctuator is the statement terminator in Java?

1. ; ✔
2. .
3. ,
4. All of these

Question 14

Which of the following is not a primitive data type in Java?

1. boolean
2. short
3. float
4. class ✔

Question 15

What is the size of a long data type in Java?

1. 32 bits
2. 64 bits ✔
3. 48 bits
4. Long data type is not supported in Java.

Question 16

What is the size of a boolean data type in Java?

1. 1 bit
2. 16 bits
3. 8 bits ✔
4. Boolean data type does not take any space in memory.

Question 17

Single line comments can be added using ...........

1. //
2. /* */
3. \
4. Both A and B ✔

Question 18

Which of the following changes a variable declaration into a constant?

1. const
2. constant
3. static
4. final ✔

Question 19

The ASCII codes of A-Z are represented by decimal range ...........

1. 65-90 ✔
2. 66-91
3. 97-122
4. 98-123

Question 20

Which of the following is a primitive data type?

1. array
2. interface
3. class
4. boolean ✔