Q.Write the HTML for a simple registration form that collects a name (required) and an email address (validated as an email), with a submit button.

This asks you to build a small form using controls and HTML5's built-in validation attributes.

<form action="register.php" method="post">
  <label for="name">Name:</label>
  <input type="text" id="name" name="name" required>
  <label for="email">Email:</label>
  <input type="email" id="email" name="email" required>
  <input type="submit" value="Register">
</form>

A form is built with the <form> container and controls inside it. We use a text input for the name and an email input for the address, giving both the required attribute so neither can be left empty, and relying on type="email" so the browser checks the address format automatically. Each control is joined to a <label> for accessibility.

<form action="register.php" method="post">
  <label for="name">Name:</label>
  <input type="text" id="name" name="name" required>

  <label for="email">Email:</label>
  <input type="email" id="email" name="email" required>

  <input type="submit" value="Register">
</form>

How it works: the action attribute names where the data is sent and method="post" sends it hidden in the request body. When the user clicks Register, the browser first checks the built-in validation — if the name box is empty, or the email is not in a valid name@example.com shape, it stops the submission and shows a message automatically. Only when both pass is the data sent.

You could add JavaScript in an onsubmit handler for custom validation messages, but for this simple case the HTML5 required attribute and type="email" are sufficient and need no scripting.

Omitting the name attribute on inputs (the server needs it to identify the data), or forgetting required so empty fields are accepted.