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Class 11 Artificial Intelligence — Chapter 3: Data Acquisition and Exploration
6 practice questions · 2 Easy · 2 Medium · 2 Hard
Free NCERT-aligned multiple-choice practice for Class 11 Artificial Intelligence, Chapter 3 (Data Acquisition and Exploration). Practise timed Easy, Medium and Hard quizzes with instant explanations — built for CBSE Board exams, JEE Main and NEET UG. Here are a few sample questions; sign in free to practise all 6.
Sample questions
Q1Easy
Primary data is:
A.Collected first-hand by researcher✓ correct
B.Copied from books
C.Found by chance
D.Random
Why
Surveys, sensors, experiments.
Q2Medium
Normalisation rescales features to:
A.A common range (e.g., 0–1)✓ correct
B.Zero only
C.Random integers
D.Negative values
Why
Min-Max or Z-score.
Q3Hard
One-hot encoding converts:
A.Categorical variables into binary 0/1 vectors✓ correct
B.Numbers to images
C.Audio to text
D.Encrypted data to plain
Why
Each category gets its own indicator column.
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