PRACTICE PAPER–2

CLASS XII
ARTIFICIAL INTELLIGENCE (CODE 843)
Maximum Time: 2 Hours Maximum Marks: 50

General Instructions:
1. Please read the instructions carefully.
2. This Question Paper consists of 21 questions in two sections: Section A & Section B.
3. Section A has Objective type questions whereas Section B contains Subjective type questions.
4. Out of the given (5 + 16 =) 21 questions, a candidate has to answer (5 + 10 =) 15 questions in the allotted (maximum)
time of 2 hours.
5. All questions of a particular section must be attempted in the correct order.
6. SECTION A - OBJECTIVE TYPE QUESTIONS (24 MARKS):
(a) This section has 5 questions.
(b) Marks allotted are mentioned against each question/part.
(c) There is no negative marking.
(d) Do as per the instructions given.
7. SECTION B – SUBJECTIVE TYPE QUESTIONS (26 MARKS):
(a) This section has 16 questions.
(b) A candidate has to do 10 questions.
(c) Do as per the instructions given.
(d) Marks allotted are mentioned against each question/part.

SECTION A — OBJECTIVE TYPE QUESTIONS

1. Answer any 4 out of the given 6 questions on Employability Skills. (1 x 4 = 4 marks)

(i) Which of the following options represents absolute cell referencing?
(a) D3$ (b) $D3
(c) D$3$ (d) $D$3
(ii) Which of the following is a presentation software?
(a) Microsoft Word (b) Microsoft Excel
(c) Microsoft Outlook (d) Microsoft PowerPoint
(iii) Which of the following best defines the competencies required to effectively collaborate and interact
with other people?
(a) Intrapersonal Skills (b) Interpersonal Skills
(c) Technical Skills (d) Analytical Skills
(iv) Match the following:
Characteristics Disorder
(i) Strong need for validation and approval (a) Avoidant Personality Disorder
from others
(ii) Difficulty in social and interpersonal (b) Histrionic Personality Disorder
functioning
(iii) Hypersensitive to criticism (c) Dependent Personality Disorder
(iv) Excessive reliance on others for emotional (d) Schizotypal Personality Disorder
support
(a) I-D, II-C, III-B, IV-A (b) I-B, II-D, III-C, IV-A
(c) I-D, II-B, III-C, IV-A (d) I-B, II-D, III-A, IV-C

Practice Paper–2 A.1

 (v) Which of the following best defines the term ‘personality’?
(a) Physical characteristics (b) Beliefs and values
(c) Occupation and career (d) Thoughts, feelings and behaviours
(vi) The ability to make profitable and quick decisions is referred to as:
(a) Decisiveness (b) Indecisiveness
(c) Hesitation (d) Procrastination

2. Answer any 5 out of the given 6 questions. (1 x 5 = 5 marks)

(i) Which of the following is not a component of the 4W Canvas?
(a) Who (b) What
(c) Where (d) When
(ii) ________ is an example of a storytelling platform.
(iii) In which stage of design thinking do we gather feedback on the prototypes developed from other
phases?
(a) Test (b) Prototype
(c) Ideate (d) Define
(iv) Match the following:
Part 1 Part 2
(i) Goal 11 (a) Climate Action
(ii) Goal 12 (b) Responsible Consumption and Production
(iii) Goal 13 (c) Life Below Water
(iv) Goal 14 (d) Sustainable Cities and Communities
(a) I-D, II-C, III-A, IV-B (b) I-A, II-C, III-D, IV-B
(c) I-D, II-A, III-B, IV-C (d) I-D, II-B, III-A, IV-C
(v) The function that splits our data into training and testing sets is ________.
(vi) Recall is the ratio of:
(a) True Positives to all Actual Negatives (b) True Positives to all Predicted Negatives
(c) True Positives to all Actual Positives (d) True Positives to all Predicted Positives

3. Answer any 5 out of the given 6 questions. (1 x 5 = 5 marks)

(i) Which stage of AI project involves defining clear objectives and success metrics?
(a) Problem Definition (b) Data Acquisition and Preparation
(c) Model Development and Training (d) Model Evaluation and Refinement
(ii) What does Mean Absolute Error measure?
(a) The square root of the average of squared differences between predicted and actual values.
(b) The average magnitude of errors in predictions without sign consideration.
(c) The proportion of the variance in the dependent variable predictable from the independent
variables.
(d) The average of the squared differences between predicted and actual values.
(iii) What is the significance of a Mesopotamian tablet dating back to around 3000 BC?
(a) It contains the earliest known examples of written language.
(b) It provides the evidence of early administrative record-keeping practices.
(c) It showcases advanced mathematical calculations.
(d) It depicts intricate artwork that represents ancient myths and legends.

A.2 Essentials of Artificial Intelligence – XII

 (iv) What role does external market data play in AI project cycle?
(a) Provides insights into internal company strategies
(b) Gives context about industry trends and competitor’s behaviour
(c) Trains AI models directly without modification
(d) Reduces the need for data cleaning
(v) “Unsustainable production and consumption of single-use plastics is at the heart of this crisis. Reducing
plastic waste requires promoting more sustainable materials and dramatically improving waste
management globally.” Which SDG do these lines primarily address?
(a) Goal 11: Sustainable Cities and Communities
(b) Goal 12: Responsible Consumption and Production
(c) Goal 13: Climate Action
(d) Goal 14: Life Below Water
(vi) What is an Outlier?
(a) A data point that lies within the expected range of values.
(b) A data point that is significantly different from the other observations in a dataset.
(c) A data point that is missing from a dataset.
(d) A statistical measure that is used to quantify the spread of data points.

4. Answer any 5 out of the given 6 questions. (1 x 5 = 5 marks)

(i) “Plastic waste mismanagement is a major issue in cities, especially in developing countries lacking
proper waste infrastructure. Reducing plastic pollution is vital for making cities inclusive, safe, resilient
and sustainable.” Which SDG do these lines primarily address?
(a) Goal 11: Sustainable Cities and Communities
(b) Goal 12: Responsible Consumption and Production
(c) Goal 13: Climate Action
(d) Goal 14: Life Below Water
(e) All of these
(ii) ________ is a stage of design thinking, also known as the brainstorming phase, where teams generate a
wide range of creative solutions to a defined problem.
(a) Empathize (b) Prototype
(c) Define (d) Ideate
(iii) Which of the following measures calculates the square root of average of the squared differences
between the predicted and the actual values?
(a) Mean Absolute Error (b) Root Mean Squared Error
(c) Mean Squared Error (d) R-2 Error
(iv) Which of the following statements regarding monitoring our model is correct?
(a) Since data remains constant, there is no need to monitor the model.
(b) There is a need to monitor the model because data is continuously evolving.
(c) There is no need to monitor the model because real-world data is predictable.
(d) None of these
(v) What is the first stage of the Design Thinking process?
(a) Prototype (b) Define
(c) Ideate (d) Empathize
(vi) Which stage of AI project lifecycle is responsible for model training?
(a) Problem Definition (b) Data Preparation
(c) Model Development and Training (d) Deployment and Monitoring

Practice Paper–2 A.3

 5. Answer any 5 out of the given 6 questions. (1 x 5 = 5 marks)
(i) What does R2-Error represent?
(a) The square root of variance in the dependent variable.
(b) The proportion of variance in the independent variable.
(c) The proportion of variance in the dependent variable is predictable from the independent variables.
(d) The average magnitude of errors in predictions.
(ii) ________ is an example of a Data Mapping tool.
(iii) What does problem scoping help in?
(a) Selecting the programming language (b) Defining the problem and its objectives
(c) Determining the size of a dataset (d) Identifying the algorithm that can be used
(iv) Predicting a value is known as:
(a) Clustering Problem (b) Classification Problem
(c) Time-series Forecasting (d) Regression Problem
(v) What type of mean does F1 Score calculate?
(a) Arithmetic (b) Geometric
(c) Harmonic (d) Median
(vi) Creating a tangible representation of selected solutions is known as ________.
(a) Prototype (b) Define
(c) Ideate (d) Empathize

SECTION B — SUBJECTIVE TYPE QUESTIONS

Answer any 3 out of the given 5 questions on Employability Skills in 20-30 words each. (2 x 3 = 6 marks)
6. Explain the two types of motivation.
7. What is spreadsheet software?
8. How can we filter data in MS Excel?
9. Define Cluster C personality disorder.
10. Enlist some barriers one can face while on an entrepreneurship journey.

Answer any 4 out of the given 6 questions in 20-30 words each. (2 x 4 = 8 marks)
11. Calculate F1 Score if Precision = 60 and Recall = 30.
12. Explain the different parts that a dataset is broken down into.
13. How is storytelling cross-cultural?
14. What is the objective of business understanding phase in the CRISP-DM approach?
15. How does heatmap help in telling the correlation between features?
16. What are the different evaluation metrics used for linear regression?

Answer any 3 out of the given 5 questions in 50-80 words each. (4 x 3 = 12 marks)
17. How is traditional storytelling different from data storytelling?
18. Explain Data Visualization Tools with their use cases.
19. What are the key parts of problem scoping in AI ?
20. What are the different components of confusion matrix?
21. How can data visualization make data interpretable?

A.4 Essentials of Artificial Intelligence – XII