CBSE Class 10 Computer Applications HTML Basics, Lists and Images Assignment Set 03

Answer: A web browser is software used to access and view web pages on the internet. Google Chrome, for example, is a free browser that opens pages by their URL, supports tabs, bookmarks and downloads, and interprets HTML to display the page.

Teacher's Note:
1. A browser reads HTML code and shows it as a web page.
2. Name one browser and mention two features.

Answer: The BODY tag contains everything that is displayed in the browser window, such as text, images, links, lists and tables. Attributes like BGCOLOR, TEXT, LINK, ALINK and VLINK control the page appearance.

Teacher's Note:
1. Only the content inside BODY is visible on the page.
2. The TITLE goes in HEAD, not BODY.

Answer: x<SUP>3</SUP> + y<SUP>3</SUP>

Teacher's Note:
1. The SUP tag raises text as a superscript.
2. Each opening tag must have its closing tag.

Answer: ALINK is an attribute of the BODY tag that sets the colour of an active link, which is the link at the moment it is clicked. VLINK sets the colour of a visited link, one that has already been opened. Example: <BODY ALINK="red" VLINK="purple">.

Teacher's Note:
1. Active means being clicked and visited means already clicked.
2. Both are given as colour names or hexadecimal codes.

Answer: The TITLE tag is not closed before HEAD is closed, so the tags are wrongly nested. Correct code:
<HTML> <HEAD> <TITLE> SECOND PAGE </TITLE> </HEAD> </HTML>

Teacher's Note:
1. Tags must be closed in the reverse order in which they were opened.
2. Here TITLE is inside HEAD, so it closes first.

Answer: (a) BODY holds the visible content of the page.
(b) BR inserts a line break; it is an empty tag with no closing tag.
(c) BASEFONT sets the default font size, colour or face for the whole page (it is an old tag that newer HTML replaces with style sheets).

Teacher's Note:
1. BR needs no end tag, while BODY has one.
2. Learn BASEFONT as part of the older HTML syllabus.

Answer: Comments are notes written in the code for the programmer; the browser does not display them. They are written between <!-- and -->, for example <!-- This is a comment -->.

Teacher's Note:
1. Comments make code easier to read and maintain.
2. They never appear on the web page.

Answer: Hello          World (ten &nbsp; entities).

Teacher's Note:
1. HTML ignores extra ordinary spaces.
2. The non-breaking space entity forces each space to appear.

Answer: A hyperlink is text or an image that, when clicked, takes the user to another web page, another part of the same page or another file. It is created with the anchor tag <A HREF="address">.

Teacher's Note:
1. Links connect pages to form the web.
2. The HREF attribute holds the destination.

Answer: <BODY BGCOLOR="colour name or hex code">, for example <BODY BGCOLOR="yellow">.

Teacher's Note:
1. BGCOLOR is an attribute of the BODY tag.
2. A hexadecimal code such as #FFFF00 also works.

Answer: The <IMG> tag, with the SRC attribute giving the file name, for example <IMG SRC="photo.jpg">.

Teacher's Note:
1. IMG is an empty tag with no closing tag.
2. SRC is the essential attribute.

Answer: The TYPE attribute selects the style of the list marker. In an ordered list it gives the numbering style (1, A, a, I, i), and in an unordered list it gives the bullet shape (disc, circle, square).

Teacher's Note:
1. The default for OL is numbers and for UL is a disc.
2. TYPE changes only the marker, not the order.

Answer: <UL> creates an unordered (bulleted) list in which the order of items does not matter. <OL> creates an ordered (numbered or lettered) list in which the order is important. Both use <LI> for each item.

Teacher's Note:
1. Think of UL as bullets and OL as numbers.
2. The list items are written in the same way in both.

Answer: Nesting means placing one list inside another list item. Example:
<UL><LI>Fruits<UL><LI>Mango</LI><LI>Apple</LI></UL></LI><LI>Vegetables</LI></UL>

Teacher's Note:
1. The inner list sits inside an LI of the outer list.
2. It is displayed with an indent and often a different bullet.

Answer: The tag is not closed with >, and the START value must be a number, not a letter. Correct code: <OL TYPE="a" START="4">, which begins the list at d.

Teacher's Note:
1. START always takes an integer even when TYPE is alphabetic.
2. The fourth letter is d, so START is 4.

Answer: (a) LI marks one item in an ordered or unordered list.
(b) HTML is the root tag that encloses the whole document.
(c) DT marks a term in a definition list; its description follows in the DD tag.

Teacher's Note:
1. DT and DD work as a pair inside DL.
2. LI is used inside UL and OL.

Answer: Use the BORDER attribute of the IMG tag, for example <IMG SRC="photo.jpg" BORDER="3">. The value gives the border thickness in pixels.

Teacher's Note:
1. A BORDER of 0 shows no border.
2. Larger numbers give a thicker border.

Answer: HTML supports three types: ordered lists (OL), unordered lists (UL) and definition lists (DL). Example of a definition list: <DL><DT>HTML<DD>A markup language</DL>.

Teacher's Note:
1. Name all three types before giving an example.
2. Definition lists use DT and DD instead of LI.

Answer: Use the WIDTH and HEIGHT attributes of the IMG tag, for example <IMG SRC="photo.jpg" WIDTH="200" HEIGHT="150">. Values are in pixels.

Teacher's Note:
1. Give both values to avoid distorting the picture.
2. Resize in proportion to keep the shape.

Answer: <UL TYPE="circle">
<LI>Mango</LI>
<LI>Apple</LI>
<LI>Grapes</LI>
<LI>Orange</LI>
</UL>

Teacher's Note:
1. Use UL for bullets and TYPE="circle" for the hollow round marker.
2. Each fruit gets its own LI.