1) Which attribute is used to include an external CSS file in HTML?
a) <link>
b) <style>
c) <css>
d) <external>
Answer: a) <link>
2) What does CSS stand for?
a) Creative Style Sheets
b) Computer Style Sheets
c) Cascading Style Sheets
d) Colorful Style Sheets
Answer: c) Cascading Style Sheets
3) Which CSS property is used to change the text color?
a) font-color
b) text-color
c) color
d) font-style
Answer: c) color
4) How can you set a background image in CSS?
a) background-img: url('image.jpg');
b) bg-image: url('image.jpg');
c) background-image: url('image.jpg');
d) img-background: url('image.jpg');
Answer: c) background-image: url('image.jpg');
5) Which CSS property is used to control the space between lines of text?
a) text-spacing
b) line-height
c) letter-spacing
d) text-line
Answer: b) line-height
6) What does the "float" property in CSS do?
a) Aligns text to the left or right within its container
b) Increases the size of an element
c) Adds a shadow to an element
d) Centers the element horizontally
Answer: a) Aligns text to the left or right within its container
7) Which CSS property is used for controlling the size of an element's border?
a) border-width
b) border-style
c) border-size
d) border-length
Answer: a) border-width
8) Which property is used to change the font of an element?
a) text-font
b) font-style
c) font-family
d) text-family
Answer: c) font-family
9) What does the CSS property "opacity" control?
a) Element's visibility
b) Element's size
c) Element's color
d) Element's transparency
Answer: d) Element's transparency
10) Which CSS display property value makes an element take up the full width of its container?
a) inline
b) block
c) inline-block
d) flex
Answer: b) block
11) What does the "z-index" property in CSS control?
a) Element's transparency
b) Element's size
c) Element's stacking order
d) Element's rotation
Answer: c) Element's stacking order
12) Which CSS property is used to specify the space between cells in a table?
a) cell-spacing
b) table-spacing
c) spacing
d) border-spacing
Answer: d) border-spacing
13) What is the default value of the "position" property in CSS?
a) static
b) relative
c) absolute
d) fixed
Answer: a) static
14) Which CSS property is used to add rounded corners to an element?
a) border-curve
b) corner-radius
c) border-radius
d) round-border
Answer: c) border-radius
15) Which CSS property is used to change the spacing between letters in text?
a) letter-spacing
b) word-spacing
c) text-spacing
d) line-spacing
Answer: a) letter-spacing