Hello Aspirant, there are four section you have to learn for this job

1. General Awareness

• Daily News.
• Countries and Capitals.
• Current Events.
• States & Capitals.
• Culture.
• History.
• Economic Scene.
• Geography.
• Art & Culture.
• Scientific Research.
• Sports.
• Countries & Currencies
• National & Internation affairs.
• Famous Personalities.
• Current GK.

2. Mental Ability

• Alphabet Series.
• Data Interpretation.
• Number Ranking.
• Statements & Arguments.
• Directions.
• Mirror Images.
• Arithmetical Reasoning.
• Embedded Figures.
• Statements & Conclusions.
• Number Series.
• Decision Making.
• Clocks & Calendars.
• Analogy.
• Blood Relations.
• Non-Verbal Series.
• Coding-Decoding.
• Cubes and Dice.

3. Quantitative Aptitude

• Height and Distance.
• Data Interpretation.
• Clocks & Calenders.
• Time and Distance.
• Ratio and Proportion.
• Partnership.
• Problems on H.C.F and L.C.M.
• Logarithm.
• Simple Interest.
• Allegation or Mixture.
• Time and Work.
• Compound Interest.
• Blood Relations.
• Chain Rule.
• Average.
• Decimal Fraction.
• Simplification.
• Probability.
• Problems on Ages.
• Surds and Indices.
• Volume and Surface Area.
• Area.
• Permutation and Combination.
• Pipes and Cistern.
• Square Root and Cube Root.
• Boats and Streams.

4. English language

• Unseen Passages.
• Meanings.
• Antonyms.
• Grammar.
• Sentence Rearrangement.
• Sentence Corrections.
• Articles.
• Phrase Replacement.
• Error Spotting/Phrase Replacement.
• Para Jumbles.
• Reading Comprehension.
• Word Formations.
• Cloze Test.
• Subject-Verb Agreement.
• Idioms & Phrases.
• Fill in the Blanks.
• Adverb.
• Adjectives.
• Missing Verbs.
• Synonyms
• Verb.

I hope this will help you.