C777 Web Development Applications Practice Questions - Set 4 - Part 3

Test your knowledge of Web Development Applications concepts with these practice questions. Each question includes detailed explanations to help you understand the correct answers.

Question 41: Which CSS property can be used to adjust the level of transparency on an element?

a) opacity

b) visibility

c) background-color

d) z-index

Question 42: In HTML5 forms, which attribute makes an input field mandatory before form submission?

a) placeholder

b) required

c) validate

d) maxlength

Question 43: Which JavaScript function pauses execution for a specified number of milliseconds?

a) setInterval()

b) setTimeout()

c) clearInterval()

d) wait()

Question 44: What is the purpose of the CSS z-index property?

a) To control the order of stacking elements

b) To set an element's position

c) To define an element’s visibility

d) To adjust the background color

Question 45: Which HTML5 input type is best suited for entering a numeric value with up and down controls?

a) range

b) text

c) number

d) slider

Question 46: Which JavaScript method is used to display an alert box with a message and an OK button?

a) alert()

b) confirm()

c) prompt()

d) document.write()

Question 47: Which CSS property defines how an element's content wraps when it reaches the end of a line?

a) word-wrap

b) text-align

c) text-wrap

d) line-height

Question 48: What is the purpose of the
element in HTML5 forms?

a) To provide a title for form elements

b) To create a dropdown selection

c) To group related form elements

d) To enable multi-line text input

Question 49: In JavaScript, which keyword is used to declare a variable with block scope, similar to const but allowing reassignment?

a) var

b) let

c) this

d) define

Question 50: Which HTML5 attribute prevents text from wrapping within an field, allowing only a single line of text?

a) nowrap

b) singleline

c) text-align