Daily Practice MCQ For NEET UG 2026 to score 650+ (DAY 5)

Daily Practice MCQ For NEET UG 2026: High-quality questions that challenge understanding, expose common misconceptions, and demand precise reasoning are essential for aspirants aiming for a top rank. Practicing such well-designed questions regularly helps students strengthen core concepts, improve accuracy, and build the confidence required to tackle the actual NEET examination.

BIOLOGY

Q1. In a dihybrid cross involving two genes showing incomplete dominance individually, how many phenotypes are expected in the F₂ generation?

(a) 9
(b) 12
(c) 16
(d) 6

Q2. Which of the following statements regarding the lac operon is incorrect?

(a) Lac repressor binds to the operator region
(b) cAMP increases the affinity of RNA polymerase for promoter
(c) Lactose acts as a corepressor
(d) Structural genes are transcribed as a single polycistronic mRNA

Q3. During photorespiration, which compound is first formed in the chloroplast?

(a) Glycine
(b) Serine
(c) Phosphoglycolate
(d) Glyoxylate

Q4. Which of the following is not a function of Sertoli cells?

(a) Nourishment of spermatogenic cells
(b) Secretion of inhibin
(c) Formation of blood-testis barrier
(d) Secretion of testosterone

Q5. If a DNA molecule has 20% cytosine, what will be the percentage of adenine?

(a) 20%
(b) 30%
(c) 40%
(d) 60%

Read Also: Daily Practice MCQ For NEET UG 2026 to score 650+ (DAY 4)

CHEMISTRY

Q6. Which of the following reactions proceeds via carbocation rearrangement?

(a) Kolbe’s reaction
(b) Wurtz reaction
(c) Friedel-Crafts alkylation
(d) Reimer-Tiemann reaction

Q7. Among the following, the strongest reducing agent in aqueous solution is:

(a) Zn²⁺/Zn
(b) Fe²⁺/Fe
(c) Cu²⁺/Cu
(d) Al³⁺/Al

Q8. Which compound gives iodoform test?

(a) Ethanal
(b) Methanal
(c) Ethanol
(d) Both (a) and (c)

Q9. The correct order of basic strength in aqueous solution is:

(a) NH₃ > NH₂CH₃ > NH(CH₃)₂
(b) NH(CH₃)₂ > NH₂CH₃ > NH₃
(c) NH₂CH₃ > NH(CH₃)₂ > NH₃
(d) NH₃ > NH(CH₃)₂ > NH₂CH₃

Q10. The hybridization of the central atom in $[ICl_4]^-$[ICl4​]− is:

(a) sp³
(b) sp³d
(c) sp³d²
(d) dsp²

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

PHYSICS

Q11. A projectile is fired at an angle θ with speed u. The ratio of its kinetic energy at highest point to that at point of projection is:

(a) cos²θ
(b) sin²θ
(c) tan²θ
(d) sec²θ

Q12. Two resistances R and 2R are connected in parallel. The equivalent resistance is:

(a) 3R
(b) R
(c) 2R/3
(d) R/3

Q13. The work function of a metal is 4 eV. The threshold wavelength (in nm) is closest to:

(a) 310
(b) 400
(c) 500
(d) 620

Q14. A charged particle enters a uniform magnetic field perpendicular to it. If its speed is doubled, the radius of the circular path becomes:

(a) Half
(b) Double
(c) Four times
(d) Same

Q15. In Young’s double slit experiment, if the distance between slits is doubled, the fringe width will:

(a) Become half
(b) Become double
(c) Remain same
(d) Become four times

Read Also: Daily Practice MCQ For NEET UG 2026 to score 650+ (DAY 2)

Consistent practice with concept-based and slightly tricky questions, followed by clear one-line analysis of answers, is the smartest way to convert hard work into results. Treat every mistake as a learning opportunity, revise weak areas systematically, and stay deeply connected to NCERT.

ANSWERS

1. (c)
2. (c)
3. (c)
4. (d)
5. (b)
6. (c)
7. (d)
8. (d)
9. (b)
10. (c)
11. (a)
12. (c)
13. (a)
14. (b)
15. (a)

Read Also: NEET UG 2026 Revision Timetable for the Last 90 Days

EXPLANATIONS

Q1. Incomplete dominance in two genes gives 4 phenotypes each — 4 × 4 = 16 phenotypes.

Q2. Lactose acts as an inducer, not a corepressor in the lac operon.

Q3. RuBisCO oxygenation produces phosphoglycolate first during photorespiration.

Q4. Testosterone is secreted by Leydig cells, not Sertoli cells.

Q5. Cytosine 20% — Guanine 20%, so remaining 60% is A + T — A = 30%.

Q6. Friedel–Crafts alkylation involves carbocation formation and rearrangement.

Q7. Aluminium has the most negative reduction potential, making it the strongest reducing agent.

Q8. Both ethanal and ethanol form methyl ketone/ethanal group, giving iodoform test.

Q9. In aqueous solution, secondary amines are most basic due to +I effect and solvation.

Q10. $[ICl₄]^-$[ICl4​]− has 6 electron pairs (4 bond + 2 lone) — sp³d² hybridization.

Q11. At highest point only horizontal velocity remains, so KE ∝ cos²θ.

Q12. Parallel combination: $1/R_{eq} = 1/R + 1/2R$1/Req​=1/R+1/2R — Rₑq = 2R/3.

Q13. Threshold wavelength $λ = hc/φ$λ=hc/φ gives ≈ 310 nm for 4 eV.

Q14. Radius $r = mv/qB$r=mv/qB, so doubling speed doubles radius.

Q15. Fringe width $β ∝ 1/d$β∝1/d, so doubling slit separation makes fringe width half.

DO SHARE YOUR SCORE IN COMMENTS!!

ALL THE BEST!!