Past Paper 2025 12th Class Karachi Board Computer Science Subjective (Option II Visual Basics)

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SECTION “B” (Short Answer Question) Marks: 30
NOTE: Attempt any Ten part questions from this section. All questions carry equal marks. Answer should not exceed 6 – 7 lines.
2. i) What is function? How it is different from a subroutine?
ii) What is meant by Data Dictionary?
iii) What are basic ActiveX control in VB?
iv) Write the full form of any three of the following:
*ADO *MDI *SQL *DBA *OLE
v) Write a program that input a year and then check whether it is leap year or not.
vi) Define any four objects in MS-Access.
vii) What is MDI form? Write its advantages.
viii) Write a program in VB that finds the largest number among three inputted numbers.
ix) What is Combo Box? List its properties.
x) Write the properties of Text Box.
xi) Define procedure with example.
xii) Write a program in VB that generates the following series:
21 23 25 27 29
xiii) Write the VB equivalent expression of the following:
*X = (2ab)2 / 3c *y = 4/3 πr3 *y = (a2 + b3)n
xiv) Differentiate between primary key and foreign key.
xv) What is error? Define its types.
Section C (Detailed –Answer Question) (30)
NOTE: Attempt any Three questions from this section. All questions carry equal marks.
3. What is Operator? Explain all operators in Visual Basic.
4. Explain the data types used in MS-Access with examples.
5. What is built-in function in VB? Explain with any program.
6. What is a Loop? Define all the types of loop used in Visual Basic.
7. What is a Database? What are the advantages of relational database management system (RDBMS)?

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