2nd Year Computer Science Chapter 9 Online MCQ Test

1. Another way to write the value 3452211903 is:

3.45221193e-09

3.452211903e09

3.452211903×09

3452211903e09

Question 1 of 10

2. Which of the following are valid variable names?

Both B and C

Notlongenough

Long

Integer

Question 2 of 10

3. Which term describes the kind of values that a variable can store?

Varaibletype

Varaible name

Varaiblesize

Datatype

Question 3 of 10

4. Relational operators are used to:

Performs arithmetic operators

Establish a relationship among variables

Construct compound condition

Compare two values

Question 4 of 10

5. Which is a valid statement for declaring a variable?

int a,b,c;

Double salary;

int marks;

All

Question 5 of 10

6. How many primary keys can a table have?

One

No limit

Between 1-5

At least one but not more than two

Question 6 of 10

7. The number of bytes used by char data type in C is:

1

16

2

121

Question 7 of 10

8. Which is NOT a rule for naming variables?

All the above

Use a descriptive name for the value

Use nothing but letters, digits, or the underscore character

Start the name of variable with a letter

Question 8 of 10

9. The float, long float and double data types are known as:

Integer data

Character data

Integral data

Real data

Question 9 of 10

10. A candidate key is:

The primary key selected to be the key of relation

All of them

Primary key

A group attribute that can be the primary key

Question 10 of 10

2nd Year Computer Science Chapter 9 Online MCQ Test

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