Hi Singh!

Below are the syllabus for SSC CHSL:

1) General Intelligence and Reasoning

• Logical Reasoning
• Alphanumeric Series
• Data Sufficiency
• Coded Inequalities
• Seating Arrangement

2) Quantitative Ability

• Simplification
• Profit and Loss
• Mixtures and Allegations
• Simple Interest and Compound Interest
• Work and Time

3) General Awareness

• History
• Culture
• Geography
• Economic Scene
• General Policy

4) English

• Comprehension
• Spot the Error
• Detecting Misspelled Words
• Synonyms and Antonyms
• Active and Passive Voice

There are many online test series which you can practice in Hindi Medium. Some of the Hindi Medium Books which you can prefer are:

• Kiran's SSC CHSL
• SSC CHSL Arihant Publication

Hope this is helpful!

All the best!