Tamil Nadu Board of Secondary EducationHSC Science Class 11th

# Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Computer Science Answers Guide chapter 6 - Specification and Abstraction [Latest edition]

## Chapter 6: Specification and Abstraction

Evaluation - Section - AEvaluation - Section - BEvaluation - Section - CEvaluation - Section - D
Evaluation - Section - A [Pages 85 - 86]

### Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Computer Science Answers Guide Chapter 6 Specification and Abstraction Evaluation - Section - A [Pages 85 - 86]

Evaluation - Section - A | Q 1. | Page 85

Which of the following activities is algorithmic in nature?

• Assemble a bicycle.

• Describe a bicycle.

• Label the parts of a bicycle.

• Explain how a bicycle works.

Evaluation - Section - A | Q 2. | Page 85

Which of the following activities is not algorithmic in nature?

• Multiply two numbers.

• Draw a kolam.

• Walk in the park.

• Swapping of two numbers.

Evaluation - Section - A | Q 3. | Page 85

Omitting details inessential to the task and representing only the essential features of the task is known as ______

• specification

• abstraction

• composition

• decomposition

Evaluation - Section - A | Q 4. | Page 85

Stating the input property and the input-output relation a problem is known ______

• specification

• statement

• algorithm

• definition

Evaluation - Section - A | Q 5. | Page 86

Ensuring the input-output relation is ______

• the responsibility of the algorithm and the right of the user.

• the responsibility of the user and the right of the algorithm.

• the responsibility of the algorithm but not the right of the user.

• the responsibility of both the user and the algorithm.

Evaluation - Section - A | Q 6. | Page 86

If i = 5 before the assignment i := i - 1 after the assignment, the value of i is ______

• 5

• 4

• 3

• 2

Evaluation - Section - A | Q 7. | Page 86

If 0 < i before the assignment i := i - 1 after the assignment, we can conclude that ______

• 0 < i

• 0 ≤ i

• i = 0

• 0 ≥ i

Evaluation - Section - B [Page 86]

### Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Computer Science Answers Guide Chapter 6 Specification and Abstraction Evaluation - Section - B [Page 86]

Evaluation - Section - B | Q 1. | Page 86

Define an algorithm.

Evaluation - Section - B | Q 2. | Page 86

Distinguish between an algorithm and a process.

Evaluation - Section - B | Q 3. | Page 86

Initially, farmer, goat, grass, wolf = L, L, L, L, and the farmer crosses the river with a goat. Model the action with an assignment statement.

Evaluation - Section - B | Q 4. | Page 86

Specify a function to find the minimum of two numbers.

Evaluation - Section - B | Q 5. | Page 86

If sqrt2 = 1.414, and the square_root() function returns -1.414, does it violate the following specification?

-- square_root (x)
-- inputs: x is a real number , x ≥ 0
-- outputs: y is a real number such that y2 = x

Evaluation - Section - C [Page 86]

### Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Computer Science Answers Guide Chapter 6 Specification and Abstraction Evaluation - Section - C [Page 86]

Evaluation - Section - C | Q 1. | Page 86

When do you say that a problem is algorithmic in nature?

Evaluation - Section - C | Q 2. | Page 86

What is the format of the specification of an algorithm?

Evaluation - Section - C | Q 3. | Page 86

What is abstraction?

Evaluation - Section - C | Q 4. | Page 86

How is the state represented in algorithms?

Evaluation - Section - C | Q 5. | Page 86

What is the form and meaning of the assignment statement?

Evaluation - Section - C | Q 6. | Page 86

What is the difference between the assignment operator and the equality operator?

Evaluation - Section - D [Page 87]

### Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Computer Science Answers Guide Chapter 6 Specification and Abstraction Evaluation - Section - D [Page 87]

#### Explain in detail

Evaluation - Section - D | Q 1. | Page 87

Write the specification of an algorithm hypotenuse whose inputs are the lengths of the two shorter sides of a right-angled triangle, and the output is the length of the third side.

Evaluation - Section - D | Q 2. | Page 87

Suppose you want to solve the quadratic equation ax2 + bx + c = 0 by an algorithm.

-- inputs:?

-- outputs:?

You intend to use the formula and you are prepared to handle only real number roots. Write a suitable specification.

x = (-b ± sqrt(b^2) - 4ac)/(2a)

Evaluation - Section - D | Q 3. | Page 87

Exchange the contents: Given two glasses marked A and B. Glass A is full of apple drink and glass B is full of grape drink. For exchanging the contents of glasses A and B, represent the state by suitable variables, and write the specification of the algorithm.

## Chapter 6: Specification and Abstraction

Evaluation - Section - AEvaluation - Section - BEvaluation - Section - CEvaluation - Section - D

## Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Computer Science Answers Guide chapter 6 - Specification and Abstraction

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Concepts covered in Class 11th Computer Science Answers Guide chapter 6 Specification and Abstraction are Algorithms, Algorithmic Problems, Building Blocks of Algorithms, Algorithm Design Techniques, Specification, Abstraction.

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