Yes, numerical problems directly from the NCERT textbooks for Physical Chemistry are indeed very important for the NEET (National Eligibility cum Entrance Test) examination. In fact, solving NCERT numericals is considered a crucial part of NEET preparation for Physical Chemistry.

NEET primarily focuses on testing the understanding of fundamental concepts and the ability to apply them to solve problems. The NCERT textbooks are designed to build a strong foundation in these basic principles. Many numerical questions in the NEET exam are either directly taken from the NCERT exercises and examples or are very similar in terms of the concepts and formulas involved.

Therefore, it is highly recommended that you thoroughly solve all the numerical problems given in the NCERT textbooks for Physical Chemistry (both Class 11 and Class 12). Pay close attention to the methods of solving, the formulas used, and the units involved. Understanding the underlying concepts behind these numericals is even more important than just memorizing the solutions.

By practicing NCERT numericals, you will not only get familiar with the type of questions asked in NEET but also strengthen your grasp of the fundamental principles of Physical Chemistry. This will make it easier for you to tackle more complex numerical problems that might appear in the exam, as they often build upon these basic concepts.

In addition to solving the NCERT numericals, it is also beneficial to practice additional problems from other reliable sources to further enhance your problem-solving skills and gain confidence. However, NCERT should be your starting point and your primary focus for numerical practice in Physical Chemistry for NEET.