NEET UG 2024 — Paper 1

200 Questions 720 Marks 180 Minutes +4 per correct answer
Time Remaining:180:00

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?? Disclaimer: This is a practice paper with simulated questions based on the exam pattern. It is not the actual exam question paper. Not affiliated with the official examination body.
Sections: Physics Chemistry Biology
Q1. [+4, -1] Physics
⚠ Negative Marking: -1 mark per wrong answer (+4 for correct, -1 for incorrect)
A particle moves in a circle of radius 2 m with speed 4 m/s. Its centripetal acceleration is:
A. 2 m/s²
B. 8 m/s²
C. 4 m/s²
D. 16 m/s²
Correct Answer: B
a_c = v²/r = 16/2 = 8 m/s².
Q2. [+4, -1] Physics
The dimension of Planck's constant is same as:
A. Energy
B. Angular momentum
C. Force
D. Power
Correct Answer: B
h = E/? ? [ML²T?¹] same as angular momentum.
Q3. [+4, -1] Physics
A wire of length L and area A has resistance R. If length is halved and area doubled, new resistance is:
A. R/2
B. R/4
C. R
D. 2R
Correct Answer: B
R' = ?(L/2)/(2A) = (?L/A)/4 = R/4.
Q4. [+4, -1] Physics
The angle between electric dipole moment and electric field in stable equilibrium is:
A. 0°
B. 90°
C. 180°
D. 45°
Correct Answer: A
In stable equilibrium, p is parallel to E ? ? = 0°, torque = 0.
Q5. [+4, -1] Physics
The energy equivalent of 1 amu is:
A. 931 eV
B. 931 MeV
C. 931 keV
D. 931 J
Correct Answer: B
1 amu = 931.5 MeV/c².
Q6. [+4, -1] Physics
A lens of power +2 D has focal length:
A. 0.5 m
B. 0.5 m
C. 2 m
D. 5 m
Correct Answer: B
f = 1/P = 1/2 = 0.5 m. Positive power ? convex lens.
Q7. [+4, -1] Physics
A body of mass 5 kg is moving with momentum 20 kg m/s. Its velocity is:
A. 2 m/s
B. 4 m/s
C. 100 m/s
D. 0.25 m/s
Correct Answer: B
v = p/m = 20/5 = 4 m/s.
Q8. [+4, -1] Physics
In Young's double slit experiment, fringe width depends on:
A. Wavelength only
B. Slit width
C. Wavelength, slit distance, and screen distance
D. Screen distance only
Correct Answer: C
ß = ?D/d. Depends on ?, D (screen distance), and d (slit separation).
Q9. [+4, -1] Physics
The coefficient of performance of a refrigerator is given by:
A. Q1/W
B. Q2/W
C. W/Q1
D. (Q1-Q2)/W
Correct Answer: B
COP = Q2/W where Q2 is heat extracted from cold reservoir and W is work input.
Q10. [+4, -1] Physics
The reason of mirage in desert is:
A. Reflection
B. Total internal reflection
C. Diffraction
D. Interference
Correct Answer: B
Mirage occurs due to total internal reflection of light in layers of different refractive indices.
Q11. [+4, -1] Chemistry
The element with electronic configuration 1s²2s²2p63s²3p6 belongs to:
A. Group 2
B. Group 18
C. Group 16
D. Group 17
Correct Answer: B
Full 3p6 ? noble gas configuration ? Group 18 (Argon).
Q12. [+4, -1] Chemistry
Which of the following shows paramagnetism?
A. H2
B. N2
C. O2
D. F2
Correct Answer: C
O2 has two unpaired electrons in its MO configuration ? paramagnetic.
Q13. [+4, -1] Chemistry
The IUPAC name of CH3COOH is:
A. Formic acid
B. Ethanoic acid
C. Acetic acid
D. Methanoic acid
Correct Answer: B
CH3COOH ? 2 carbons ? Ethanoic acid (common: acetic acid).
Q14. [+4, -1] Chemistry
The shape of NH3 molecule is:
A. Trigonal planar
B. Trigonal pyramidal
C. Tetrahedral
D. Linear
Correct Answer: B
NH3: 3 bond pairs + 1 lone pair ? trigonal pyramidal shape.
Q15. [+4, -1] Chemistry
Which of the following is NOT a polymer?
A. Nylon
B. Cellulose
C. Glucose
D. PVC
Correct Answer: C
Glucose is a monomer (monosaccharide), not a polymer. Nylon, cellulose, PVC are polymers.
Q16. [+4, -1] Chemistry
In a redox reaction, oxidation involves:
A. Loss of electrons
B. Gain of electrons
C. Gain of hydrogen
D. Loss of oxygen
Correct Answer: A
Oxidation = loss of electrons, Reduction = gain of electrons (OIL RIG).
Q17. [+4, -1] Chemistry
The bond angle in water is approximately:
A. 90°
B. 109.5°
C. 104.5°
D. 120°
Correct Answer: C
Water has bent shape with 104.5° angle due to lone pair repulsion.
Q18. [+4, -1] Chemistry
Which of these is a double displacement reaction?
A. 2H2 + O2 ? 2H2O
B. NaCl + AgNO3 ? AgCl + NaNO3
C. Zn + H2SO4 ? ZnSO4 + H2
D. CaCO3 ? CaO + CO2
Correct Answer: B
Double displacement: two compounds exchange ions ? new compounds.
Q19. [+4, -1] Chemistry
The number of moles in 11 g of CO2 is:
A. 0.5
B. 0.25
C. 1
D. 2
Correct Answer: B
Molar mass CO2 = 44 g/mol. n = 11/44 = 0.25.
Q20. [+4, -1] Chemistry
The catalyst used in the contact process for H2SO4 is:
A. V2O5
B. Fe
C. Ni
D. Pt
Correct Answer: A
Contact process uses V2O5 (vanadium pentoxide) as catalyst.
Q21. [+4, -1] Biology
Which vitamin is water soluble?
A. Vitamin A
B. Vitamin D
C. Vitamin C
D. Vitamin K
Correct Answer: C
Vitamin C and B-complex are water-soluble. A, D, E, K are fat-soluble.
Q22. [+4, -1] Biology
The largest gland in the human body is:
A. Pancreas
B. Liver
C. Salivary gland
D. Thyroid
Correct Answer: B
Liver is the largest gland (~1.5 kg) and performs 500+ functions.
Q23. [+4, -1] Biology
Which of these is a prokaryote?
A. Amoeba
B. Bacteria
C. Yeast
D. Paramecium
Correct Answer: B
Bacteria are prokaryotes (no membrane-bound nucleus/organelles).
Q24. [+4, -1] Biology
The universal donor blood group is:
A. A
B. B
C. AB
D. O
Correct Answer: D
O negative is universal donor (no A/B antigens, no Rh factor).
Q25. [+4, -1] Biology
The respiratory pigment in human blood is:
A. Chlorophyll
B. Hemoglobin
C. Melanin
D. Myoglobin
Correct Answer: B
Hemoglobin in RBCs transports O2 from lungs to tissues.
Q26. [+4, -1] Biology
Which part of the brain controls balance and coordination?
A. Cerebrum
B. Cerebellum
C. Medulla
D. Hypothalamus
Correct Answer: B
Cerebellum coordinates voluntary movements, balance, and posture.
Q27. [+4, -1] Biology
The number of chromosomes in human cells is:
A. 23
B. 46
C. 48
D. 44
Correct Answer: B
Humans have 23 pairs = 46 chromosomes (22 autosomes + 1 sex chromosome pair).
Q28. [+4, -1] Biology
The disease caused by deficiency of insulin is:
A. Goiter
B. Diabetes mellitus
C. Anemia
D. Rickets
Correct Answer: B
Diabetes mellitus is caused by insufficient insulin production or insulin resistance.
Q29. [+4, -1] Biology
The DNA structure was discovered by:
A. Mendel
B. Darwin
C. Watson and Crick
D. Pasteur
Correct Answer: C
Watson and Crick proposed the double helix structure of DNA in 1953.
Q30. [+4, -1] Biology
Which chamber of the heart pumps blood to the lungs?
A. Left atrium
B. Left ventricle
C. Right atrium
D. Right ventricle
Correct Answer: D
Right ventricle pumps deoxygenated blood to lungs via pulmonary artery.