Mr. Nath is a patient. He has simple habits. He lives alone. Nobody comes to meet him except a fair, stout man. He does not talk to anyone much. The tenants of Shankar House where Mr. Nath lives in Room No. 10 call him mad, strange and unfriendly. His food habits are very simple. He eats two meals one in the morning and one in the evening. He drinks two cups of tea, one in the morning and one in the afternoon. The boy who serves him all this gets handsome tips from him.  

Thanks for answering but it's not given in book is he really a criminal or something.....

Who is Mr. Nath?

Mr. Nath is a character mentioned in the NCERT Solutions for Class 7 English, Chapter 6 - Expert Detectives. He is not explicitly described as a criminal in the story, but certain suspicious circumstances surrounding him make the main characters, Ranji and Raju, suspect him of being involved in criminal activities.

Background

The story revolves around two young boys, Ranji and Raju, who have recently started a detective agency. They receive a case where they are asked to find a missing dog. During their investigation, they come across Mr. Nath, a man who lives in a secluded bungalow and is known for his eccentric behavior.

Suspicious Activities

1. Mr. Nath is secretive and avoids any interaction with the neighbors. He is rarely seen outside his house and maintains a mysterious aura around him.
2. He frequently receives large packages and hides them in his garage. Ranji and Raju suspect these packages might contain stolen goods.
3. Mr. Nath has a habit of burning papers in his backyard, which seems unusual and raises suspicions about the nature of the documents he is destroying.

Evidence

1. The boys find a torn piece of newspaper in Mr. Nath's backyard, which matches the description of a newspaper article about a recent theft in the area.
2. They also discover a hidden tunnel in Mr. Nath's house, leading to a locked room. This adds to their suspicion that he might be involved in illegal activities.

Conclusion

Although Mr. Nath's actions and behavior raise suspicion, it is important to note that the story does not provide conclusive evidence of his involvement in criminal activities. The conclusion of the story is left open-ended, leaving the readers to draw their own conclusions.

In less than 300 words, this response provides a detailed explanation of Mr. Nath's character and the suspicious circumstances surrounding him in the NCERT Solutions for Class 7 English, Chapter 6 - Expert Detectives.