Question: What novel by Chetan Bhagat was the movie that Mona Singh is known for playing Jassi (Jasmeet Walia) in inspired by?

Context articles: One Night @ the Call Center
Ansh: The Deadly Part
Mona Singh
3 Idiots
Kai Po Che!
2 States: The Story of My Marriage
Naya Roop Nayi Zindagi
Five Point Someone
Half Girlfriend
What Young India Wants

One Night @ the Call Center is a novel written by Chetan Bhagat and first published in 2005.
 The novel revolves around a group of six call center employees working at the Connexions call center in Gurgaon, Haryana, India.
 It takes place during one night, during which all of the leading characters confront some aspect of themselves or their lives they would like to change.
 The story uses a literal deus ex machina, when the characters receive a phone call from God.
This story is about Deputy Superintendent of Police Bhagat Pandey (Om Puri), who is thorough, honest, and has an excellent track record of apprehending criminals.This story is about Deputy Superintendent of Police Bhagat Pandey (Om Puri), who is thorough, honest, and has an excellent track record of apprehending criminals.
 This background creates problems for him with other criminals who are closely connected to powerful politicians.
 As a result he is transferred to Bombay (now known as Mumbai).
 He takes charge of his post, and transforms everything to a diligent and honest policing machine.
 Unfortunately, politicians and criminals alike do not like his diligence, and talk about transferring him to Kashmir, where he will be killed in an encounter by a terrorist.
 Bhagat also comes in touch with suspended Police Inspector Sukhdev Singh, and gangleader, Rajnath Guru, the son of a freedom-fighter, Dinanathji (Aloknath).
 A truly moving movie depicting characters from India's freedom struggle against the British, Raj Guru, Bhagat Singh, and Sukhdev Singh were the ones who fought for freedom again the British, in this kalyuga, the three Rajnath Guru, Bhagat Pandey, and Sukhdev Singh must fight against corruption and their very own lives.
Mona Singh (born 8 October 1981) is an Indian actress and television presenter.
 Singh is known for playing the leading roles of Jassi (Jasmeet Walia) in "Jassi Jaissi Koi Nahin", Mona Pradeep Singh in "Kya Huaa Tera Vaada", winning the show "Jhalak Dikhhla Jaa", and also for her role in the film "3 Idiots".
 She has acted as the lead protagonist in two Balaji Telefilms shows "Kya Huaa Tera Vaada" and "Pyaar Ko Ho Jaane Do".
 As of June 2016, she is appearing in the show "Kavach...Kaali Shaktiyon Se" as Paridhi.
3 Idiots is a 2009 Indian coming of age comedy-drama film co-written, edited, and directed by Rajkumar Hirani and produced by Vidhu Vinod Chopra.
 Abhijat Joshi wrote the screenplay.
 It was inspired by the novel "Five Point Someone" by Chetan Bhagat.
 The film stars Aamir Khan, Kareena Kapoor, R. Madhavan, Sharman Joshi, Omi Vaidya, Parikshit Sahni, and Boman Irani.
Kai Po Che!
 (also known as Kai Po Che: Brothers... for Life) is a 2013 Indian buddy drama film directed by Abhishek Kapoor based on Chetan Bhagat's novel "The 3 Mistakes of My Life", with music by Amit Trivedi and lyrics by Swanand Kirkire.
 Sushant Singh Rajput, Rajkummar Rao and Amit Sadh star as the three main protagonists while Amrita Puri plays the female lead.
 The film title "Kai Po Che!"
 is originally a Gujarati phrase that means "I have cut" which refers to Makar Sankranti (known as Uttarayan in Gujarat) where one of the competitors uses his kite to cut off another competitors kite and yells "Kai Po Che!"
 The shooting started mid-April in Vadnagar and Ahmedabad.
2 States: The Story of My Marriage commonly known as 2 States is a 2009 novel written by Chetan Bhagat.
 It is the story about a couple coming from two different states in India, who face hardships in convincing their parents to approve of their marriage.
 Bhagat wrote this novel after quitting his job as an investment banker.
 This is his fourth book after "Five Point Someone", "One Night @ the Call Center" and "The Three Mistakes of My Life".
Naya Roop Nayi Zindagi was a reality television show that aired on Sony TV, from May 1, 2008 to July 3, 2008.
 The show was an Indian version of the American show "Extreme Makeover".
 It is anchored by Mona Singh, popularly known as Jassi.
Five Point Someone: What not to do at IIT!
 is a 2004 novel written by Chetan Bhagat, an alumnus of Indian Institute of Technology, Delhi and Indian Institute of Management, Ahmedabad.
 The book sold more than a million copies worldwide.
 The popular Hindi movie "3 Idiots" is based on this book.
Half Girlfriend is an Indian English coming of age, young adult romance novel by Indian author Chetan Bhagat.
 The novel, set in rural Bihar, New Delhi, Patna, and New York, is the story of a Bihari boy in quest of winning over the girl he loves.
 This is Bhagat's sixth novel which was released on 1 October 2014 by Rupa Publications.
 The novel has also been published in Hindi and Gujarati versions as well.
 A Hindi film adaptation released on 19 May 2017.
What Young India Wants is a non-fiction book by Chetan Bhagat.
 A compilation of his speeches and essays, it focuses on Indian society, politics the youth.
 The book revolves around Bhagat's thoughts and innovations on how to improve the Indian economy through social reforms.
 It also criticizes the dis-function of the Indian government as well as moralities regarding the current condition of India.
 Bhagat writes about how India can be a progressive society in the future.
 He talks about the rampant corruption in India and how society should change to rid it.
 The theme is central to his dream of a free and forward thinking India.