12th Computer Applications - Book Back Answers - Chapter 4

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Tamil Nadu Board 12th Standard Computer Applications - Chapter 4: Book Back Answers and Solutions

This post covers the book back answers and solutions for Chapter 4 from the Tamil Nadu State Board 12th Standard Computer Applications textbook. These detailed answers have been carefully prepared by our expert teachers at KalviTips.com.

We have explained each answer in a simple, easy-to-understand format, highlighting important points step by step under the relevant subtopics. Students are advised to read and memorize these subtopics thoroughly. Once you understand the main concepts, you’ll be able to connect other related points with real-life examples and confidently present them in your tests and exams.

By going through this material, you’ll gain a strong understanding of Chapter 4 along with the corresponding book back questions and answers (PDF format).

Question Types Covered:

1 Mark Questions: Choose the correct answer, Fill in the blanks, Identify the correct statement, Match the following
2 Mark Questions: Answer briefly
3, 4, and 5 Mark Questions: Answer in detail

All answers are presented in a clear and student-friendly manner, focusing on key points to help you score full marks.

All the best, Class 12 students! Prepare well and aim for top scores. Thank you!

Chapter 4: Hypertext Preprocessor

I. Choose the correct answer.

1. The expansion of PHP is _________
a) PHP: Hypertext Preprocessor
b) Personal Hypertext Preprocessor
c) Pretext Home page
d) Preprocessor Home Page
Answer Key:
a) PHP: Hypertext Preprocessor

2. What is the extension of PHP file?
a) .html
b) .xml c
c) .php
d) .ph
Answer Key:
c) .php

3. The PHP script should start with _________
a) <?php
b) <php
c) <php?
d) <:?
Answer Key:
a) <?php

4. How many data types does PHP support?
a) 18
b) 28
c) 8
d) 38
Answer Key:
c) 8

5. Every variable name in PHP must begin with a _________ symbol.
a) #
b) //
c) $
d) <
Answer Key:
c) $

6. _________ in PHP are case – sensitive.
a) variable names
b) keywords
c) Variable names and keywords
d) None of the above
Answer Key:
a) variable names

7. The assignment operator is ___________
a) =
b) ==
c) ===
d) !=
Answer Key:
a) =

8. _________ operators perform an action to compare two values.
a) arithmetic
b) comparison
c) increment
d) logical
Answer Key:
b) comparison

9. Which operator is called “identical”?
a) =
b) ==
c) ===
d) <>
Answer Key:
c) ===

10. _________ is a data type which contains decimal numbers.
a) Integer
b) Float
c) Boolean
d) NULL
Answer Key:
b) Float

II.Answer the following questions.

12th Computer Application (soon)

III. Answer the following questions.

12th Computer Application (Soon)

IV. Answer the following questions.

12th Computer Application (Soon)