| \(\text{Column I}\) (List) | \(\text{Column II}\) (Jurisdiction Sphere) |
|---|---|
| I. Union list subjects | A. State Governments alone make laws on it. |
| II. State list subjects | B. For uniformity Central Government Legislates on it. |
| III. Concurrent subjects | C. Subjects under Jurisdiction of Centre and State Governments. |
| IV. Residuary subjects | D. Central Government legislates on new subjects. |
The correct matching is as follows:
1. Union list subjects (B): These are subjects of national importance, and for uniformity, only the Central Government legislates on them (e.g., defense, foreign affairs).
2. State list subjects (A): These are of local importance, and only the State Governments can legislate on them (e.g., police, public health).
3. Concurrent subjects (C): Both the Centre and State Governments have jurisdiction over these subjects (e.g., education, forests).
4. Residuary subjects (D): Subjects not included in any list are legislated by the Central Government (e.g., cyber laws).
In the adjoining figure, $\triangle CAB$ is a right triangle, right angled at A and $AD \perp BC$. Prove that $\triangle ADB \sim \triangle CDA$. Further, if $BC = 10$ cm and $CD = 2$ cm, find the length of AD. 
प्रादेशिक स्तर पर आयोजित होने वाली 100 मीटर की बाधा दौड़ में आपके मित्र को प्रथम स्थान मिला है। उसे बधाई देते हुए लगभग 40 शब्दों में एक संदेश लिखिए।