Hi Girija,

The syllabus of TNPSC group 4 examination is listed as announced by by the Tamilnadu public service commission ( TNPSC) combined civil service examination:

The most recommended book for TNPSC group 4 are sura publications and sakthi publications it contains previous exam papers and detailed explanation for each topics. 

The topics under general Studies: 

• Physics : Nature of universal scientific laws, mechanics and properties of physical quantity, standards and unit, force, motion, magnetism, electrical and electronic, heat, light and sound.
• Chemistry : elements and compounds, acids, bases and salts, fertilizers, pesticides and insecticides. 
• Botany  : concepts of life science, classification of living organisms, nutrition and dietetics.
• Zoology: blood circulation, reproductive system, health and hygiene, human diseases- causes, prevention and remedies. 
• History : indus valley civilization, guptas,mughal and Martha's, culture and heritage of Tamil people, dravidian movement, India since independence. 
• Geography: earth and solar system, monsoon, rainfall and climate changes, rivers, soil types, minerals and forests, population density and disaster management. 
• Indian politics: constitution of India, fundamental rights, fundamental duties, union legislatures, parliament, assembly, panchayat, judiciary in India and official languages. 
• Indian economy  : nature of Indian economy, five years plan, rural welfare, social sector problems, employment, economic trends in Tamil nadu. 
• Aptitude and mental ability test: simplification, percentage, ratio and proportion, simple interest, compound interest, logical reasoning, puzzle solving, data analysis. 

The topics under General English :

• Synonyms 
• Antonyms 
• Prefix and suffix 
• Articles 
• Prepositions 
• Question tag
• Tense 
• Voice 
• Plural form
• Simple, compound and complex sentence 
• Degree of speech 
• Blending words
• Figures of speech in poems 
• Question from poetry 
• Important lines from poems
• Question on Shakespeare 
• Question on oscar Wilde 
• Motivational essays 
• British English and American English 
• Authors and literature work 

Hope the above information will be helpful to prepare for the examination. Please feel free to ask for any more queries. Thank you. 

All the best. 

Hello Girija.S,

The syllabus of group 4 exam can be seen here

http://www.tnpsc.gov.in/syllabus/new_syllabus_group_iv_services_updated.pdf

Following are the books/things i recommend for group 4 exam

Try this youtube channel

https://www.youtube.com/user/RapidAcademy/playlists

Online source to read from

https://www.governmentexams.co.in/samacheer-books/

Solve previous year papers

https://tnpsc.news/tnpsc-group-4-previous-year-papers/

Good luck !