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The WB Board 2026 Class 12 Data Science Question Paper with Solution PDF is available here. The WBCHSE Data Science exam was scheduled for February 2026, during the Morning Session from 10:00 AM to 12:00 PM.
The paper was analytical and data-driven, featuring a moderate level of difficulty. While the sections on Data Visualization and Basic Statistics were scoring, the questions involving Data Cleaning techniques, SQL queries, and the implementation of Decision Trees required precise logic and programming knowledge. Students aiming for high results should target a score between 85–95 marks, focusing on clear interpretations of data sets and accurate syntax for Python-based data manipulation
WB Board 2026 Class 12 Data Science Question Paper with Solution PDF
| WB Board 2026 Class 12 Data Science Question Paper with Solution PDF | Download PDF | Check Solutions |
Explain the steps involved in Data Wrangling and why it is essential before analysis.
What is the difference between Structured, Semi-structured, and Unstructured data?
Describe the Data Science Lifecycle from data collection to deployment.
What is Data Cleaning, and how do you handle missing values in a dataset?
Explain the concept of Data Normalization and why it is used in scaling features.
Define Mean, Median, and Mode and explain which is most affected by outliers.
What is a Hypothesis Test, and what do the Null and Alternative hypotheses represent?
What is a DataFrame in Pandas, and how does it differ from a Series?
How do you perform a Join and Merge operation on two different datasets in Python?
What are the key principles of Effective Data Visualization?
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