While the standard GK book has a science section, this standalone book (by Ravi Bhushan) goes much deeper. If you are targeting exams like RRB NTPC or Group D, this is mandatory.
Objective: To explain the "Why" behind the "What." It bridges the gap between basic school science and technical exam requirements.
Physics: Covers everything from Mechanics to Atomic & Nuclear Physics.
Chemistry: Focuses on Substance Nature, Chemical Bonding, and everyday chemistry (Metals, Alloys, and Carbon compounds).
Biology: Extensive coverage of Cytology, Genetics, and Human Physiology.
Computer Science: Basic fundamentals and networking terms.
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