A full-length NEET mock in the real pattern: 90 Biology, 45 Physics and 45 Chemistry questions, +4 for a correct answer and −1 for a wrong one. Mock 3 is the same paper for every student, so your rank is among everyone who sat it. Difficulty: 33% easy, 58% medium, 8% hard.
Sample questions from Mock 3 with answers
10 of the 180 questions, with answers and explanations. The rest are in the app.
Question 1
Biology · Chemical Coordination and IntegrationThe hypothalamus is connected to the pituitary through:
- A the thyroid gland
- B the pineal gland
- C the hypophyseal portal circulation and the neural stalk
- D the bone
Answer: C. the hypophyseal portal circulation and the neural stalk
Why: The hypothalamic hormones regulate the pituitary secretions.
Question 2
Biology · Anatomy of Flowering PlantsThe interfascicular cambium is formed from the:
- A the xylem
- B the cells of the medullary rays that are in line with the fascicular cambium
- C the epidermis
- D the pith
Answer: B. the cells of the medullary rays that are in line with the fascicular cambium
Why: It completes the cambial ring.
Question 3
Biology · Biotechnology and Its ApplicationsWhich of the following statements about genetically modified crops is correct?
- A They are always harmful to humans
- B They can be made tolerant to abiotic stresses such as cold, drought, salt and heat
- C They never need a regulatory approval
- D They can not be produced in India
Answer: B. They can be made tolerant to abiotic stresses such as cold, drought, salt and heat
Why: This is one of the major applications of GM plants.
Question 4
Biology · BiomoleculesThe secondary structure of the protein, such as the α-helix, is stabilised by:
- A hydrogen bonds between the backbone atoms
- B peptide bonds only
- C disulfide bonds only
- D ionic bonds only
Answer: A. hydrogen bonds between the backbone atoms
Why: The right-handed helix has 3.6 amino acids per turn.
Question 5
Biology · Mineral NutritionThe first step in the formation of the nodule is the:
- A the formation of the leaf
- B the formation of the flower
- C the recognition by the bacteria of the root hairs, and their entry through the infection thread
- D the loss of the root
Answer: C. the recognition by the bacteria of the root hairs, and their entry through the infection thread
Why: The bacteria multiply and cause the nodule formation.
Question 6
Physics · Laws of MotionThe forces of 3 N and 4 N act on a body at right angles to each other. A third force that keeps the body in equilibrium has a magnitude of:
- A 5 N
- B 7 N
- C 1 N
- D 12 N
Answer: A. 5 N
Why: The resultant of the two is √(9 + 16) = 5 N, so the third force must be 5 N in the opposite direction.
Question 7
Physics · OscillationsSoldiers are asked to break step while crossing a bridge in order to avoid:
- A wind effects
- B fatigue of the bridge
- C loss of balance
- D resonance, which could make the bridge oscillate with a large amplitude
Answer: D. resonance, which could make the bridge oscillate with a large amplitude
Why: Marching in step could drive the bridge at its natural frequency.
Question 8
Chemistry · EquilibriumThe solubility product of AgCl is 1 × 10⁻¹⁰ at 25 °C. Its solubility in pure water is:
- A 2 × 10⁻⁵ M
- B 1 × 10⁻² M
- C 1 × 10⁻⁵ M
- D 1 × 10⁻¹⁰ M
Answer: C. 1 × 10⁻⁵ M
Why: Ksp = s², so s = √(1 × 10⁻¹⁰) = 1 × 10⁻⁵ M.
Question 9
Chemistry · Chemical KineticsAccording to collision theory, only the collisions with:
- A any orientation and any energy
- B sufficient energy and proper orientation lead to a reaction
- C a proper orientation alone
- D any energy
Answer: B. sufficient energy and proper orientation lead to a reaction
Why: Such collisions are called effective collisions.
Question 10
Chemistry · PolymersTerylene (Dacron) is a polyester made from:
- A phenol and formaldehyde
- B ethylene glycol and terephthalic acid
- C hexamethylenediamine and adipic acid
- D caprolactam
Answer: B. ethylene glycol and terephthalic acid
Why: Condensation between the diol and the dicarboxylic acid forms ester links.