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 15 is the same paper for every student, so your rank is among everyone who sat it. Difficulty: 34% easy, 56% medium, 10% hard.
Sample questions from Mock 15 with answers
10 of the 180 questions, with answers and explanations. The rest are in the app.
Question 1
Biology · Human ReproductionThe middle piece of a sperm contains numerous mitochondria, which:
- A carry the genes
- B form the zona pellucida
- C provide energy for the movement of the tail
- D contain the hydrolytic enzymes
Answer: C. provide energy for the movement of the tail
Why: The tail enables swimming.
Question 2
Biology · Anatomy of Flowering PlantsSimple permanent tissues in plants, such as parenchyma, collenchyma, and sclerenchyma, are composed of:
- A cells of a single type performing the same function
- B multiple different cell types
- C only dead cells
- D only meristematic cells
Answer: A. cells of a single type performing the same function
Why: Simple permanent tissues consist of only one type of cell that work together to perform the same function, unlike complex tissues (xylem, phloem), which contain multiple cell types.
Question 3
Biology · Environmental IssuesIncreased UV-B radiation reaching the Earth after ozone depletion can cause:
- A snow-blindness, cataract and skin cancer
- B eutrophication
- C rise in sea level only
- D acid rain
Answer: A. snow-blindness, cataract and skin cancer
Why: UV-B damages DNA and inflames the cornea.
Question 4
Biology · Biotechnology and Its ApplicationsA single-stranded DNA or RNA, tagged with a radioactive molecule (a probe), is allowed to hybridise to its complementary DNA in a clone of cells. The cells where it hybridises are detected by:
- A a chromatography
- B microscopy only
- C a centrifugation
- D autoradiography
Answer: D. autoradiography
Why: The clone with the mutated gene will not appear on the photographic film.
Question 5
Biology · Human Health and DiseasesMalaria is caused by a parasite belonging to the genus:
- A Plasmodium
- B Escherichia
- C Mycobacterium
- D Entamoeba
Answer: A. Plasmodium
Why: Malaria is caused by protozoan parasites of the genus Plasmodium, transmitted through the bite of an infected female Anopheles mosquito.
Question 6
Physics · Ray Optics and Optical InstrumentsThe power of a lens is measured in diopters and is defined as:
- A the reciprocal of the focal length in meters
- B the focal length in meters
- C the square of the focal length
- D the product of focal length and refractive index
Answer: A. the reciprocal of the focal length in meters
Why: Power P = 1/f (in meters), measured in diopters (D); a converging lens has positive power, a diverging lens negative.
Question 7
Physics · Work, Energy and PowerWhich of the following is a conservative force?
- A Friction
- B Gravitational force
- C Air resistance
- D Viscous drag
Answer: B. Gravitational force
Why: Gravitational force is conservative — the work it does depends only on initial and final positions, not the path taken; friction, air resistance and viscous drag are all non-conservative (dissipative) forces.
Question 8
Chemistry · ElectrochemistryThe time needed to deposit 0.3175 g of copper (M = 63.5) by a current of 1 A (F = 96500 C/mol) is:
- A 965 s
- B 96.5 s
- C 9650 s
- D 1930 s
Answer: A. 965 s
Why: 0.3175 g is 0.005 mol, which needs 0.01 mol of electrons = 965 C.
Question 9
Chemistry · Aldehydes, Ketones and Carboxylic AcidsA Grignard reagent reacts with carbon dioxide, followed by hydrolysis, to give:
- A an aldehyde
- B a carboxylic acid
- C an alcohol
- D a ketone
Answer: B. a carboxylic acid
Why: RMgX + CO₂ → RCOOMgX → RCOOH.
Question 10
Chemistry · States of MatterAt the same temperature and pressure, equal volumes of all gases contain the same number of molecules. This is:
- A Boyle's law
- B Avogadro's law
- C Charles' law
- D Graham's law
Answer: B. Avogadro's law
Why: Avogadro's law relates the volume of a gas to the number of moles at constant T and P.