Hello there , books for 1st year college exam for zoology, botany and chemistry are as follows

zoology

1. Invertebrates by R.K kotpal or P.S verma

2. Zoology for Degree students by V.K Agarwal

3. Animal physiology and biochemistry by V.K Agarwal (NEP 2020 aligned)

BOTANY

1. Botany FOR DEGREE STUDENTS by B.P PANDEY

2. textbook for botany by singh, Pande and jain

3. Alage by H.C Vashishta

CHEMISTRY

1. Principal of inorganic chemistry by B.R puri,L.R sharma ,M.S kalia

2. Concise inorganic chemistry by J.D Lee

3. Organic chemistry by O.P tandon

4. physical chemistry by puri,sharama