MCQs Of Class 24: Introduction to Responsive Design

Rashmi Mishra
personRashmi Mishra
January 13, 2025
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MCQs Of Class 24: Introduction to Responsive Design

1. What is the main purpose of responsive web design?

  • A) To create a website that looks the same on all devices.
  • B) To make a website look good on all devices by adjusting the layout.
  • C) To make a website load faster.
  • D) To make a website compatible with only desktop devices.

Correct Answer: B
Explanation: Responsive design ensures that the website layout adjusts to fit various screen sizes, providing an optimal viewing experience on all devices.

2. What does the meta viewport tag control in responsive design?

  • A) The color scheme of the website.
  • B) The layout of the website.
  • C) The zoom level and scaling on mobile devices.
  • D) The header font size.

Correct Answer: C
Explanation: The meta viewport tag allows control over the layout on mobile devices, adjusting the zoom and scaling.

3. Which CSS property is used to make an element's width fluid in a responsive design?

  • A) width: 100px;
  • B) width: 50%;
  • C) width: 500px;
  • D) width: auto;

Correct Answer: B
Explanation: Setting width: 50% makes the element fluid, meaning it will adjust according to its parent container.

4. What is the purpose of the @media query in CSS?

  • A) To adjust the color of text based on screen size.
  • B) To apply styles based on different device screen sizes or characteristics.
  • C) To modify the font size of a webpage.
  • D) To make images responsive.

Correct Answer: B
Explanation: @media queries allow the application of different styles based on conditions like screen width, device type, and resolution.

5. Which of the following media queries applies to devices with a maximum width of 768px?

  • A) @media screen and (min-width: 768px)
  • B) @media screen and (max-width: 768px)
  • C) @media screen and (width: 768px)
  • D) @media screen and (max-height: 768px)

Correct Answer: B
Explanation: The @media screen and (max-width: 768px) query targets devices with a screen width of 768px or smaller.

6. How can you make an image responsive in CSS?

  • A) Use the width property with a fixed value.
  • B) Set the height property to auto.
  • C) Set the width property to 100%.
  • D) Set the display property to inline.

Correct Answer: C
Explanation: Setting width: 100% makes an image resize dynamically to fit its container, ensuring responsiveness.

7. What is the advantage of using Flexbox in responsive design?

  • A) It helps create a fixed-width layout.
  • B) It simplifies the alignment and distribution of elements.
  • C) It makes all elements stack vertically.
  • D) It ensures images resize automatically.

Correct Answer: B
Explanation: Flexbox is a layout model that makes it easy to align and distribute space among items in a container, even when their sizes are unknown or dynamic.

8. What does the flex-wrap property in Flexbox do?

  • A) It makes the flex items grow in size.
  • B) It controls whether flex items should stay in one row or wrap into multiple rows.
  • C) It defines the direction of flex items.
  • D) It centers the items within the container.

Correct Answer: B
Explanation: The flex-wrap property controls whether items should be forced into one line or wrapped into multiple lines when the container is too small.

9. Which of the following is NOT a Flexbox property?

  • A) flex-direction
  • B) align-items
  • C) grid-template-columns
  • D) justify-content

Correct Answer: C
Explanation: grid-template-columns is a CSS Grid property, not Flexbox.

10. What is the default value of the flex-wrap property in Flexbox?

  • A) nowrap
  • B) wrap
  • C) reverse
  • D) center

Correct Answer: A
Explanation: By default, Flexbox will not wrap items and keep them in a single row (nowrap).

11. Which of the following is true about a CSS Grid layout?

  • A) It divides the layout into rows and columns.
  • B) It uses flexbox for alignment.
  • C) It automatically adjusts the layout without the need for media queries.
  • D) It only works with horizontal layouts.

Correct Answer: A
Explanation: CSS Grid divides a page into rows and columns, allowing complex layouts.

12. How do you center a div horizontally and vertically in a Flexbox container?

  • A) justify-content: center; align-items: center;
  • B) justify-items: center; align-items: center;
  • C) justify-content: center; flex-align: center;
  • D) align-items: center; margin: auto;

Correct Answer: A
Explanation: In Flexbox, justify-content: center; centers the items horizontally, and align-items: center; centers them vertically.

13. What is the purpose of the box-sizing property in CSS?

  • A) It controls the alignment of items.
  • B) It ensures that padding and border are included in the total width and height of elements.
  • C) It specifies the size of the box model.
  • D) It defines the border style.

Correct Answer: B
Explanation: box-sizing: border-box; ensures that padding and border are part of the element's total width and height.

14. How do you apply styles only for screens with widths greater than 1024px?

  • A) @media screen and (min-width: 1024px)
  • B) @media screen and (max-width: 1024px)
  • C) @media screen and (width: 1024px)
  • D) @media screen and (min-height: 1024px)

Correct Answer: A
Explanation: The media query @media screen and (min-width: 1024px) applies styles only for screens that are 1024px or wider.

15. Which of the following is NOT a benefit of responsive design?

  • A) Better user experience on mobile devices.
  • B) Easier content management across devices.
  • C) Increased development time for desktop websites.
  • D) Improved SEO performance.

Correct Answer: C
Explanation: Responsive design helps optimize user experience, content management, and SEO, while not increasing development time if done correctly.

16. Which of the following units are commonly used in responsive design?

  • A) px, pt, em
  • B) rem, em, %, vw, vh
  • C) cm, in
  • D) pt, cm, mm

Correct Answer: B
Explanation: Relative units like rem, em, %, vw, and vh are commonly used in responsive design for fluid layouts.

17. What does vw stand for in CSS?

  • A) Viewport Width
  • B) View Width
  • C) View Window
  • D) View Width Percentage

Correct Answer: A
Explanation: vw stands for viewport width and is a relative unit that represents a percentage of the viewport's width.

18. How does the max-width property help in responsive design?

  • A) It restricts an element’s width to a maximum size.
  • B) It makes the element always responsive.
  • C) It ensures the element expands beyond its container.
  • D) It reduces the height of the element.

Correct Answer: A
Explanation: max-width limits the width of an element to a maximum value, preventing it from growing too large on bigger screens.

19. How can you prevent images from stretching in a responsive layout?

  • A) Set width: 100% and height: auto;
  • B) Set height: 100% and width: auto;
  • C) Set object-fit: cover;
  • D) Use background-size: contain;

Correct Answer: A
Explanation: Setting width: 100% and height: auto ensures images scale proportionally within their container.

20. Which of the following statements is true about media queries?

  • A) They only work with images.
  • B) They only apply to screen widths.
  • C) They can apply to a variety of features like resolution, orientation, and screen width.
  • D) They are obsolete in modern web development.

Correct Answer: C
Explanation: Media queries allow the application of different styles based on various characteristics, such as screen width, resolution, and orientation.

21. What property does Flexbox use to align items horizontally?

  • A) align-items
  • B) align-self
  • C) justify-content
  • D) flex-direction

Correct Answer: C
Explanation: justify-content aligns items horizontally in a Flexbox container.

22. Which of the following CSS properties is used to create a flexible grid layout?

  • A) display: block;
  • B) display: grid;
  • C) display: flex;
  • D) display: inline;

Correct Answer: B
Explanation: display: grid; creates a grid layout, which is ideal for complex, responsive designs.

23. What does vh stand for in CSS?

  • A) Viewport Height
  • B) Vertical Height
  • C) View Height
  • D) View Width

Correct Answer: A
Explanation: vh stands for viewport height and represents a percentage of the height of the viewport.

24. What is a common technique to create a responsive image gallery?

  • A) Use absolute positioning.
  • B) Use Flexbox or Grid with auto width for images.
  • C) Use large images to ensure quality.
  • D) Use inline-block for each image.

Correct Answer: B
Explanation: Flexbox and Grid layout techniques allow images to resize responsively by using auto widths and adjusting according to the available space.

25. Which property of the @media query allows targeting specific screen orientations?

  • A) orientation
  • B) aspect-ratio
  • C) screen-orientation
  • D) width

Correct Answer: A
Explanation: The orientation feature of the @media query targets specific screen orientations, such as landscape or portrait.

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Here are the remaining 25 multiple-choice questions (MCQs) on Responsive Design with explanations:

26. Which of the following media queries will apply styles for screens with a width between 600px and 1200px?

  • A) @media screen and (min-width: 600px) and (max-width: 1200px)
  • B) @media screen and (max-width: 600px) and (min-width: 1200px)
  • C) @media screen and (width: 600px to 1200px)
  • D) @media screen and (width: 600px), (width: 1200px)

Correct Answer: A
Explanation: The correct syntax for targeting screens between 600px and 1200px is @media screen and (min-width: 600px) and (max-width: 1200px).

27. What does flex-direction: column; do in Flexbox?

  • A) It arranges the flex items in a row.
  • B) It arranges the flex items in a column.
  • C) It makes the items stack vertically with a gap.
  • D) It wraps the items in a column.

Correct Answer: B
Explanation: flex-direction: column; arranges the flex items vertically (in a column) rather than horizontally (in a row).

28. Which of the following is the correct syntax to set the maximum width for an element in CSS?

  • A) max-width: 500px;
  • B) width: 500px;
  • C) min-width: 500px;
  • D) height: 500px;

Correct Answer: A
Explanation: max-width: 500px; sets a maximum width for an element, ensuring it doesn't grow larger than 500px.

29. How can you make a website layout adaptive to any screen size without using media queries?

  • A) Use only absolute positioning.
  • B) Use relative units like em, %, vw, and vh.
  • C) Use fixed pixel values for widths.
  • D) Use a grid layout with fixed-width columns.

Correct Answer: B
Explanation: Using relative units like em, %, vw, and vh allows the layout to adapt to different screen sizes without the need for media queries.

30. What is the benefit of using rem in responsive design?

  • A) It allows you to set widths in pixels.
  • B) It sets the size relative to the font size of the root element, making the layout more scalable.
  • C) It fixes the layout to a specific width.
  • D) It allows for flexible font styles.

Correct Answer: B
Explanation: rem is relative to the root font size, making it easier to scale elements proportionally when the font size of the root element is changed.

31. What is the effect of the CSS property object-fit: cover; on images?

  • A) It stretches the image to fit the container.
  • B) It resizes the image proportionally to cover the container while maintaining its aspect ratio.
  • C) It centers the image without resizing.
  • D) It causes the image to be displayed in a fixed size.

Correct Answer: B
Explanation: object-fit: cover; ensures the image covers the entire container, maintaining its aspect ratio while cropping if necessary.

32. Which of the following CSS properties is used to control the layout of multiple columns in a page?

  • A) grid-template-columns
  • B) column-count
  • C) flex-wrap
  • D) display: grid

Correct Answer: B
Explanation: column-count is used to specify the number of columns in a multi-column layout.

33. What does the flex-grow property do in Flexbox?

  • A) It determines the initial size of a flex item.
  • B) It allows an item to grow and fill available space.
  • C) It aligns the items within a container.
  • D) It sets the direction of the flex items.

Correct Answer: B
Explanation: flex-grow allows flex items to grow and take up any remaining space in the container, proportionally to the other items.

34. How does display: block; work in responsive design?

  • A) It makes an element flexible within its container.
  • B) It forces an element to take up the full width of its container.
  • C) It aligns the element in the center.
  • D) It hides the element on mobile devices.

Correct Answer: B
Explanation: display: block; makes an element take up the full width of its container, allowing the content to flow around it.

35. Which of the following is an example of a mobile-first approach in CSS?

  • A) Writing styles for desktop devices first, then adding media queries for smaller devices.
  • B) Writing styles for smaller devices first, then using media queries for larger devices.
  • C) Writing separate CSS for tablets only.
  • D) Writing CSS for all screen sizes together.

Correct Answer: B
Explanation: The mobile-first approach involves writing CSS for small screens first and then using media queries to adjust styles for larger screens.

36. What does the CSS property align-items: center; do in Flexbox?

  • A) It aligns the items horizontally within the container.
  • B) It centers the items vertically within the container.
  • C) It aligns items at the top of the container.
  • D) It aligns items to the left of the container.

Correct Answer: B
Explanation: align-items: center; centers the flex items vertically within the container.

37. Which CSS property is used to create a responsive navigation menu that adjusts based on screen size?

  • A) float
  • B) flex
  • C) position: absolute
  • D) display: inline

Correct Answer: B
Explanation: flex allows items to be arranged dynamically, enabling a responsive navigation menu that adjusts based on screen size.

38. What does flex-basis define in Flexbox?

  • A) The space between flex items.
  • B) The initial size of a flex item before any space distribution occurs.
  • C) The direction in which flex items are laid out.
  • D) The alignment of items in a Flexbox container.

Correct Answer: B
Explanation: flex-basis defines the initial size of a flex item before any available space is distributed according to flex-grow.

39. What is the correct syntax to target screens that are smaller than 600px using media queries?

  • A) @media screen and (max-width: 600px)
  • B) @media screen and (min-width: 600px)
  • C) @media screen and (width: 600px)
  • D) @media screen and (height: 600px)

Correct Answer: A
Explanation: @media screen and (max-width: 600px) targets screens that are 600px wide or smaller.

40. What does the justify-content: space-between; property do in Flexbox?

  • A) It aligns the items at the center of the container.
  • B) It distributes items evenly with space between them.
  • C) It places items at the start of the container.
  • D) It wraps the items into multiple lines.

Correct Answer: B
Explanation: justify-content: space-between; evenly distributes the flex items with equal space between them.

41. Which of the following CSS units is best suited for creating layouts that adapt to different screen sizes?

  • A) px
  • B) em
  • C) cm
  • D) rem

Correct Answer: B
Explanation: em is relative to the font size of the parent element, making it more adaptable for different screen sizes.

42. What does the align-self: center; property do in Flexbox?

  • A) It centers an individual flex item horizontally within its container.
  • B) It centers an individual flex item vertically within its container.
  • C) It centers all flex items within the container.
  • D) It aligns an individual flex item to the left.

Correct Answer: B
Explanation: align-self: center; centers a specific flex item vertically within its container, overriding the align-items setting.

43. How can you implement a responsive grid layout using CSS?

  • A) Use position: absolute; for every grid item.
  • B) Use display: grid; and define columns and rows.
  • C) Use float: left; to arrange items in a grid.
  • D) Use inline-block for every grid item.

Correct Answer: B
Explanation: display: grid; allows you to define rows and columns, creating a responsive grid layout.

44. Which property should you use to control the space between flex items in Flexbox?

  • A) gap
  • B) margin
  • C) padding
  • D) justify-content

Correct Answer: A
Explanation: The gap property is used to control the space between items in a Flexbox container.

45. Which of the following CSS properties is used to make an element invisible but still occupy space in the layout?

  • A) visibility: hidden;
  • B) display: none;
  • C) opacity: 0;
  • D) position: absolute;

Correct Answer: A
Explanation: visibility: hidden; makes the element invisible while maintaining its space in the layout.

46. What does position: relative; do in CSS?

  • A) It removes the element from the flow and positions it absolutely.
  • B) It allows you to position an element relative to its normal position in the document flow.
  • C) It makes the element sticky within the page.
  • D) It positions an element outside the document flow.

Correct Answer: B
Explanation: position: relative; allows you to move the element relative to its normal position in the layout.

47. What does the box-sizing: border-box; property do?

  • A) It includes padding and border in the element's total width and height.
  • B) It excludes padding and border from the element's width and height.
  • C) It changes the border size.
  • D) It sets the box model to use only the content area.

Correct Answer: A
Explanation: box-sizing: border-box; includes padding and border within the element's total width and height, making it easier to manage layout sizes.

48. What is the benefit of using CSS Grid over Flexbox for responsive design?

  • A) It is simpler to use than Flexbox.
  • B) It is more suitable for creating complex two-dimensional layouts.
  • C) It is more performant than Flexbox.
  • D) It automatically adjusts items in one direction only.

Correct Answer: B
Explanation: CSS Grid is more suitable for creating complex two-dimensional layouts, whereas Flexbox is better for one-dimensional layouts.

49. What does @media screen and (min-width: 768px) target?

  • A) It targets screens with a minimum width of 768px.
  • B) It targets screens smaller than 768px.
  • C) It targets screens exactly 768px wide.
  • D) It targets screens between 500px and 1000px.

Correct Answer: A
Explanation: @media screen and (min-width: 768px) targets screens with a minimum width of 768px, typically for tablets and larger devices.

50. What is the primary goal of responsive web design?

  • A) To make websites look the same on all devices.
  • B) To ensure websites are accessible only on desktop devices.
  • C) To create websites that adapt to different screen sizes and devices.
  • D) To make websites load faster.

Correct Answer: C
Explanation: The primary goal of responsive web design is to ensure websites are accessible and function well on all devices, adapting to various screen sizes.

This concludes the 50 multiple-choice questions on Responsive Design with detailed explanations.

 

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