Chemistry Test for 12th Grade:
- The chemistry test for 12th grade should cover topics such as organic chemistry, inorganic chemistry, physical chemistry, and practical chemistry.
- Include multiple-choice questions, short answer questions, and problem-solving questions to assess students' understanding of the subject.
- Questions should be based on concepts like chemical bonding, thermodynamics, equilibrium, and reaction mechanisms.
- Include questions that require students to apply their knowledge to real-life situations or practical scenarios.

Physics Test for 12th Grade:
- The physics test for 12th grade should cover topics such as mechanics, electromagnetism, optics, and modern physics.
- Include questions that require students to solve numerical problems, explain physical phenomena, and analyze experimental data.
- Questions should test students' understanding of concepts like Newton's laws of motion, electric circuits, wave optics, and quantum mechanics.
- Include questions that require students to draw diagrams, graphs, or tables to illustrate their answers.

Biology Test for 12th Grade:
- The biology test for 12th grade should cover topics such as genetics, ecology, evolution, and human physiology.
- Include questions that require students to identify and label biological diagrams, explain biological processes, and analyze experimental results.
- Questions should test students' understanding of concepts like DNA replication, ecosystem dynamics, natural selection, and organ systems.
- Include questions that require students to compare and contrast different biological phenomena or theories.