Q1. JavaScript object is a collection of:

A) Only numbers
B) Properties and methods
C) Only strings
D) Only functions

Answer: B

Explanation:
An object in JavaScript stores data as properties and actions as methods.

Q2. Which symbol is used to access object properties?

A) #
B) .
C) @
D) &

Answer: B

Explanation:
The dot . operator is commonly used to access object properties.

Example: student.name

Q3. Which object stores multiple values in a single variable?

A) String
B) Number
C) Array
D) Boolean

Answer: C

Explanation:
An array stores multiple values in a single variable using index positions.

Q4. Array index starts from:

A) 1
B) 0
C) -1
D) 10

Answer: B

Explanation:
In JavaScript, array indexing starts from 0.

Q5. Which method adds element at the end of array?

A) pop()
B) push()
C) shift()
D) remove()

Answer: B

Explanation:
push() adds one or more elements to the end of an array.

Q6. Which method removes last element of array?

A) pop()
B) push()
C) shift()
D) delete()

Answer: A

Explanation:
pop() removes the last element from an array.

Q7. Which object is used for text handling?

A) Number
B) String
C) Boolean
D) Math

Answer: B

Explanation:
The String object is used to work with text values.

Q8. Which object is used for numeric values?

A) Number
B) String
C) Array
D) Boolean

Answer: A

Explanation:
The Number object helps manage numeric values.

Q9. Boolean object stores:

A) Numbers
B) True or False
C) Text
D) Images

Answer: B

Explanation:
Boolean stores only logical values: true and false.

Q10. Which event occurs when user clicks on an element?

A) onsubmit
B) onclick
C) onload
D) onchange

Answer: B

Explanation:
onclick event occurs when the user clicks an HTML element.

Q11. Which event occurs when form is submitted?

A) onclick
B) onsubmit
C) onfocus
D) onhover

Answer: B

Explanation:
onsubmit event triggers when a form is submitted.

Q12. Event handling means:

A) Creating database
B) Responding to user actions
C) Hosting website
D) Styling page

Answer: B

Explanation:
Event handling means executing code when users perform actions like click, submit, etc.

Q13. Which event occurs when page finishes loading?

A) onclick
B) onload
C) onsubmit
D) onblur

Answer: B

Explanation:
onload event occurs when the webpage is completely loaded.

Q14. Which event occurs when input value changes?

A) onchange
B) onsubmit
C) onclick
D) onreset

Answer: A

Explanation:
onchange occurs when the value of an input field changes.

Q15. JavaScript error handling is done using:

A) if-else
B) try-catch
C) switch
D) loop

Answer: B

Explanation:
try-catch is used to handle runtime errors in JavaScript.

Q16. Which block contains risky code?

A) catch
B) finally
C) try
D) error

Answer: C

Explanation:
The try block contains code that may generate an error.

Q17. Which block handles the error?

A) try
B) catch
C) final
D) break

Answer: B

Explanation:
The catch block handles errors that occur inside the try block.

Q18. Scope in JavaScript means:

A) Color selection
B) Area where variable is accessible
C) Browser speed
D) CSS layout

Answer: B

Explanation:
Scope defines where a variable can be accessed in the program.

Q19. Global variable can be accessed:

A) Only inside function
B) Anywhere in program
C) Only in loop
D) Only in HTML

Answer: B

Explanation:
Global variables are accessible throughout the entire program.

Q20. Local variable can be accessed:

A) Everywhere
B) Only inside its function/block
C) Only outside function
D) In CSS only

Answer: B

Explanation:
Local variables work only inside the function or block where they are declared.

Q21. Form validation is used for:

A) Styling form
B) Checking user input correctness
C) Adding image
D) Creating server

Answer: B

Explanation:
Form validation ensures the entered data is correct before submission.

Q22. Example of form validation:

A) Email format checking
B) Changing font
C) Adding table
D) Background color

Answer: A

Explanation:
Checking whether email is valid is a common example of form validation.

Q23. Responsive modal form means:

A) Static form
B) Popup form adjusting to screen size
C) Printed form
D) Hidden form

Answer: B

Explanation:
Responsive modal forms are popup forms that work properly on all screen sizes.

Q24. Which keyword creates a new object?

A) create
B) object
C) new
D) make

Answer: C

Explanation:
The new keyword is used to create object instances.

Q25. Which property gives array length?

A) size
B) count
C) length
D) total

Answer: C

Explanation:
length returns the total number of elements in an array.

Q26. Which method converts text to uppercase?

A) upper()
B) toUpperCase()
C) capitalize()
D) upperCase()

Answer: B

Explanation:
toUpperCase() converts all letters of a string into uppercase.

Q27. Which method finds text length?

A) size()
B) count()
C) length
D) total()

Answer: C

Explanation:
The length property gives the number of characters in a string.

Q28. Which statement can manually create an error?

A) break
B) continue
C) throw
D) stop

Answer: C

Explanation:
throw is used to create custom errors manually.

Q29. JavaScript validation can happen:

A) Only server side
B) Only client side
C) Both client side and server side
D) Only database side

Answer: C

Explanation:
Validation can be done in browser (client-side) and on server-side.

Q30. DOM stands for:

A) Document Object Model
B) Data Object Management
C) Digital Output Method
D) Document Operating Mode

Answer: A

Explanation:
DOM stands for Document Object Model. It allows JavaScript to access and modify HTML elements.