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Daily Practice Sheet — 50 Questions
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Daily MCQ Paper — 28 April 2026
50 questions across all sections. Use the practice interface to attempt; review answers and explanations after submission.
- Q1. By the parallel axis theorem, the moment of inertia about an axis distance d from the centre of mass is
- I_cm + Md
- I_cm + Md^2
- I_cm – Md^2
- I_cm × Md^2
- Q2. The terminal velocity of a sphere in a viscous fluid is proportional to
- r
- r^2
- 1/r
- r^3
- Q3. For a solid sphere rolling without slipping, the ratio of rotational KE to total KE is
- 2/5
- 2/7
- 5/7
- 1/2
- Q4. Escape velocity from Earth's surface is approximately
- 7.9 km/s
- 11.2 km/s
- 13.6 km/s
- 9.8 km/s
- Q5. Bernoulli's equation is essentially conservation of
- Mass
- Momentum
- Energy in fluids
- Charge
- Q6. Kepler's third law states T^2 is proportional to
- a
- a^2
- a^3
- 1/a
- Q7. The efficiency of a Carnot engine operating between T_h = 600 K and T_c = 300 K is
- 25%
- 40%
- 50%
- 75%
- Q8. The rotational KE of a flywheel of moment of inertia I and angular velocity ω is
- Iω
- Iω/2
- ½Iω²
- I²ω
- Q9. On a p-V diagram, the area under an isothermal expansion equals
- Internal energy change
- Work done by the gas
- Heat absorbed only
- Both work and heat (since ΔU=0)
- Q10. The acceleration due to gravity at height h above Earth's surface (h<<R) is approximately
- g(1 – 2h/R)
- g(1 + 2h/R)
- g(1 – h/R)
- g(1 + h/R)
- Q11. Critical angle for glass-air interface (n=1.5) is approximately
- 30 deg
- 42 deg
- 60 deg
- 48 deg
- Q12. A 2 kg block slides down a frictionless incline of 30°. Acceleration is
- 5 m/s²
- 9.8 m/s²
- 4.9 m/s²
- 7 m/s²
- Q13. A NAND gate output is HIGH unless
- Both inputs LOW
- Both inputs HIGH
- Either input HIGH
- Either input LOW
- Q14. In an AC circuit V = V0 sin(ωt) and I = I0 sin(ωt – π/2), the average power is
- V0I0/2
- V0I0
- Zero
- V0I0/√2
- Q15. Bohr radius a0 for hydrogen-like atom of Z=2 is
- a0
- a0/2
- 2*a0
- 4*a0
- Q16. Coefficient of restitution e=1 corresponds to
- Inelastic
- Perfectly elastic
- Perfectly inelastic
- Cannot say
- Q17. Wave function of a free particle is solution of which equation?
- Newton's 2nd law
- Schrödinger equation
- Maxwell's equation
- Continuity equation
- Q18. In salt analysis, white precipitate of AgCl, soluble in NH4OH, indicates
- Cl-
- Br-
- I-
- SO4^2-
- Q19. Brown ring test confirms
- NO2-
- NO3-
- Cl-
- SO4^2-
- Q20. Nylon 6,6 is a
- Addition polymer
- Condensation polymer of hexamethylenediamine and adipic acid
- Natural polymer
- Vulcanised rubber
- Q21. Bakelite is a polymer of
- Phenol + formaldehyde
- Urea + formaldehyde
- Vinyl chloride
- Styrene + butadiene
- Q22. Among HClO, HClO2, HClO3, HClO4, the strongest acid is
- HClO
- HClO2
- HClO3
- HClO4
- Q23. Glucose and fructose are linked by which bond in sucrose?
- α(1→4) glycosidic
- α(1→2)β glycosidic
- β(1→4) glycosidic
- peptide
- Q24. Peptide bond between amino acids is a
- C-N bond formed by condensation
- C-O bond
- C-C bond
- S-S bond
- Q25. Adsorption of a gas on solid is generally
- Endothermic
- Exothermic
- Athermic
- Variable
- Q26. DNA differs from RNA in having
- Ribose sugar
- Uracil
- Deoxyribose sugar and thymine
- Single strand
- Q27. Lyophobic colloids are stabilised by
- Hydration
- Charge on dispersed particles
- Solvent affinity
- Salting out
- Q28. Number of moles in 22 g of CO₂ (M=44)
- 0.5
- 1
- 2
- 0.25
- Q29. Which has the highest first ionisation energy?
- Na
- Mg
- Al
- Si
- Q30. The IUPAC name of CH3-CH(OH)-CH3 is
- Propan-1-ol
- Propan-2-ol
- 2-Methylpropanol
- Isopropanal
- Q31. Which is a Lewis acid?
- NH₃
- BF₃
- H₂O
- OH⁻
- Q32. Number of stereoisomers possible for 2-bromobutane is
- 1
- 2
- 3
- 4
- Q33. Aldol condensation involves
- α-hydrogen of carbonyl
- β-hydrogen
- OH group
- Carbonyl O
- Q34. The pH of 0.001 M HCl is
- 2
- 3
- 4
- 11
- Q35. If A is a 3×3 matrix with |A| = 5, then |adj A| =
- 5
- 25
- 125
- 1/5
- Q36. Cramer's rule applies when
- |A| = 0
- |A| ≠ 0
- A is singular
- A is rectangular
- Q37. The rank of an n×n non-singular matrix is
- 0
- 1
- n-1
- n
- Q38. Coefficient of x^4 in (1 + x)^10 is
- C(10,3)
- C(10,4)
- C(10,5)
- 10!/4!
- Q39. By De Moivre's theorem, (cos θ + i sin θ)^n =
- cos nθ + i sin nθ
- cos θ + i sin nθ
- cos nθ – i sin nθ
- n(cos θ + i sin θ)
- Q40. The number of permutations of letters of "MATHS" is
- 60
- 120
- 5
- 25
- Q41. The locus of |z – 2| = |z + 2| in the complex plane is
- Circle
- Real axis
- Imaginary axis
- Parabola
- Q42. By multinomial theorem, the number of terms in (x + y + z)^n is
- n + 1
- n+2 choose 2
- n+1 choose 2
- n^2
- Q43. Variance of n observations equals
- Mean of squares – square of mean
- Square of mean – mean of squares
- Mean of squares only
- Always 0
- Q44. In linear regression Y = a + bX, the slope b equals
- Cov(X,Y)/Var(Y)
- Cov(X,Y)/Var(X)
- Var(X)/Cov(X,Y)
- r
- Q45. Sum of roots of x² − 5x + 6 = 0
- 5
- 6
- -5
- -6
- Q46. cos(60°) =
- ½
- √3/2
- 1/√2
- 1
- Q47. The slope of tangent to y=x^3 at x=2 is
- 6
- 8
- 12
- 24
- Q48. Slope of tangent to y = ln x at x = 1 is
- 0
- 1
- e
- undefined
- Q49. If sinθ = 3/5 in QI, then cosθ =
- 3/5
- 4/5
- 5/3
- 5/4
- Q50. Probability of getting a head and a 6 with one coin and one die
- 1/12
- 1/6
- 1/2
- 1/3