Daily Practice MCQ For NEET UG 2026 to score 650+ (DAY 3)

Daily Practice MCQ For NEET UG 2026: As NEET UG steadily shifts towards concept-driven and application-heavy questions, students must move beyond routine practice and predictable patterns. This advanced-level question set is curated to simulate that exact challenge. Covering high-yield areas from Biology, Physics, and Chemistry, these questions are meant to stretch thinking, expose conceptual gaps, and prepare aspirants for the unpredictable nature of the actual exam.

BIOLOGY (5 Questions)

Q.1. A mutation causes DNA polymerase III to lose its 3′-5′ exonuclease activity but retain polymerization ability. Which of the following is the most likely immediate consequence during DNA replication?

A. Slower rate of replication
B. Increased frequency of point mutations
C. Complete arrest of replication fork
D. Inability to synthesize lagging strand

Q.2. Which change will most directly increase the glomerular filtration rate (GFR)?

A. Constriction of efferent arteriole
B. Constriction of afferent arteriole
C. Decrease in plasma proteins
D. Decrease in Bowman’s capsule pressure

Q.3. In a C₄ plant, if bundle sheath cells lose Rubisco activity but mesophyll cells remain normal, which process will be primarily affected?

A. CO₂ fixation into oxaloacetate
B. Calvin cycle
C. Photolysis of water
D. Electron transport chain

Q.4. In a dihybrid cross, genes A and B show 40% recombination frequency. What does this indicate?

A. Genes are on different chromosomes
B. Genes are completely linked
C. Genes are partially linked
D. Genes follow independent assortment

Q.5. Which of the following ecosystems has the highest net primary productivity per unit area?

A. Open ocean
B. Grassland
C. Tropical rainforest
D. Desert

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PHYSICS (5 Questions)

Q.6. Two identical charged spheres are suspended from a common point by insulating strings of equal length. If the charge on each sphere is doubled, the separation between them will:

A. Become double
B. Become √2 times
C. Become 4 times
D. Remain unchanged

Q.7. A wire of resistance R is stretched uniformly to double its original length. Its new resistance becomes:

A. R/2
B. R
C. 2R
D. 4R

Q.8. A solid sphere and a hollow sphere of the same mass and radius roll down an incline without slipping. Which reaches the bottom first?

A. Solid sphere
B. Hollow sphere
C. Both together
D. Depends on angle of incline

Q.9. The stopping potential in a photoelectric experiment depends on:

A. Intensity of incident radiation
B. Frequency of incident radiation
C. Distance of source from metal
D. Area of metal surface

Q.10. For an ideal gas undergoing an isothermal expansion, which statement is correct?

A. Internal energy increases
B. Internal energy decreases
C. Internal energy remains constant
D. Internal energy first increases then decreases

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CHEMISTRY (5 Questions)

Q.11. For a spontaneous process at constant temperature and pressure, which condition must be satisfied?

A. ΔH < 0
B. ΔS < 0
C. ΔG < 0
D. ΔG > 0

Q.12. Which of the following will undergo SN1 reaction fastest?

A. CH₃Cl
B. CH₃CH₂Cl
C. (CH₃)₃CCl
D. C₆H₅CH₂Cl

Q.13. Which complex shows linkage isomerism?

A. [Co(NH₃)₆]Cl₃
B. [Co(NH₃)₅NO₂]Cl₂
C. [Cr(H₂O)₆]Cl₃
D. [Ni(CO)₄]

Q.14. Which element has the highest first ionization energy?

A. Boron
B. Carbon
C. Nitrogen
D. Oxygen

Q.15. If the EMF of a cell is positive, which statement is correct?

A. Reaction is non-spontaneous
B. ΔG is positive
C. Reaction is spontaneous
D. Cell is at equilibrium

Treat each question as an opportunity to refine reasoning, improve accuracy under pressure, and strengthen conceptual links across subjects. With consistent review and disciplined analysis, such practice sets become powerful tools for transforming preparation into performance.

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