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 17 is the same paper for every student, so your rank is among everyone who sat it. Difficulty: 28% easy, 62% medium, 10% hard.
Sample questions from Mock 17 with answers
10 of the 180 questions, with answers and explanations. The rest are in the app.
Question 1
Biology · Breathing and Exchange of GasesThe additional volume of air that a person can inspire by a forced inspiration is the:
- A the tidal volume
- B inspiratory reserve volume (IRV), about 2500 mL to 3000 mL
- C the expiratory reserve volume
- D the residual volume
Answer: B. inspiratory reserve volume (IRV), about 2500 mL to 3000 mL
Why: The ERV is 1000 to 1100 mL.
Question 2
Biology · Anatomy of Flowering PlantsThe tissue systems in the plants are:
- A the meristematic and permanent
- B only the vascular
- C the epidermal, ground and vascular tissue systems
- D the xylem and phloem
Answer: C. the epidermal, ground and vascular tissue systems
Why: The epidermal tissue forms the outermost layer.
Question 3
Biology · Biotechnology and Its ApplicationsGolden rice is a genetically modified crop engineered to be rich in:
- A vitamin A precursor (beta-carotene)
- B vitamin C
- C protein
- D iron only
Answer: A. vitamin A precursor (beta-carotene)
Why: Golden rice is genetically engineered to biosynthesize beta-carotene (a precursor of vitamin A) in the edible parts of the rice grain, addressing vitamin A deficiency.
Question 4
Biology · Reproduction in OrganismsAsexual reproduction in Hydra occurs by:
- A a binary fission
- B budding
- C a conjugation
- D spore formation
Answer: B. budding
Why: The bud grows into a small hydra and detaches.
Question 5
Biology · Excretory Products and Their EliminationThe ureotelic animals include:
- A the insects
- B the bony fishes
- C mammals, many terrestrial amphibians and the marine fishes
- D birds
Answer: C. mammals, many terrestrial amphibians and the marine fishes
Why: The urea is synthesised in the liver.
Question 6
Physics · Wave OpticsThe phenomenon of polarisation shows that light waves are:
- A stationary
- B non-electromagnetic
- C longitudinal
- D transverse
Answer: D. transverse
Why: Only transverse waves can be polarised, since their vibrations can be restricted to a single plane.
Question 7
Physics · Units and MeasurementsA light year is a unit of:
- A luminosity
- B time
- C speed
- D distance
Answer: D. distance
Why: It is the distance light travels in one year, about 9.46 × 10¹⁵ m.
Question 8
Chemistry · Solid StateThe number of Bravais lattices and crystal systems are respectively:
- A 7 and 7
- B 14 and 7
- C 14 and 14
- D 7 and 14
Answer: B. 14 and 7
Why: The crystal systems include cubic, tetragonal, orthorhombic and others.
Question 9
Chemistry · States of MatterAir contains 78% nitrogen by volume. At a total pressure of 1 atm, the partial pressure of nitrogen is:
- A 78 atm
- B 0.22 atm
- C 0.78 atm
- D 1 atm
Answer: C. 0.78 atm
Why: The partial pressure is the mole (volume) fraction times the total pressure.
Question 10
Chemistry · p-Block ElementsNitrogen does not form pentahalides such as NCl5, whereas phosphorus forms PCl5, because nitrogen:
- A is less electronegative than phosphorus
- B has no vacant d-orbitals in its valence shell
- C exists as a diatomic molecule
- D has a larger atomic radius than phosphorus
Answer: B. has no vacant d-orbitals in its valence shell
Why: Expanding the octet to five bonds requires vacant d-orbitals. Nitrogen's valence shell is 2s2p only, so its maximum covalence is four.