Introduction:
In Paper II of the UPSC examination, there are certain drawing or diagram-based questions that candidates may encounter. These questions test the candidate's ability to comprehend and analyze visual information, as well as their creative and problem-solving skills.

Types of drawing or diagram-based questions:
1. Diagram interpretation: Candidates may be required to analyze and interpret a given diagram or visual representation. They may be asked to explain the various components, processes, or relationships depicted in the diagram.

2. Diagram creation: Candidates may be asked to create a diagram or visual representation based on a given scenario or problem. They may need to illustrate a concept, system, or process using appropriate symbols and labels.

3. Flowcharts: Candidates may encounter questions that require them to complete or analyze a given flowchart. They may be asked to identify missing steps, determine the sequence of events, or suggest improvements to an existing flowchart.

4. Maps and graphs: Candidates may be presented with maps or graphs and asked to analyze or draw conclusions based on the information provided. They may need to interpret geographical features, population trends, economic data, or any other relevant information.

5. Engineering or technical drawings: In certain disciplines like civil engineering or architecture, candidates may be required to interpret or create technical drawings. They may need to analyze structural plans, electrical diagrams, or mechanical drawings and answer questions related to them.

Preparation tips:
1. Familiarize yourself with different types of diagrams, symbols, and notations related to your field of study or the UPSC syllabus.
2. Practice interpreting and creating diagrams regularly to improve your visualization and analytical skills.
3. Review past question papers to understand the format and types of drawing or diagram-based questions that have been asked in previous exams.
4. Develop a systematic approach to analyzing and solving these questions, such as breaking them down into smaller components and identifying key information.
5. Seek guidance from teachers, mentors, or online resources like EduRev to enhance your understanding and proficiency in drawing and diagram-based questions.

Conclusion:
Drawing or diagram-based questions in Paper II of the UPSC examination aim to assess a candidate's ability to understand and interpret visual information. By practicing regularly and developing a systematic approach, candidates can improve their performance in these questions and increase their chances of success in the examination.