NEET 2019 | NEET Year Wise Previous Years Questions

Biology

Chemistry

1. For a cell involving one electron $$E_{cell}^\Theta $$ = 0.59 V at 298 K, the equilibrium constant for the cell reaction 2. If the rate constant for a first order reaction is k, the time (t) required for the completion of 99 % of the reaction i 3. The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber’s process is : 4. The structure of intermediate A in the following reaction, is : 5. For the second period elements the correct increasing order of first ionization enthalpy is : 6. In which case change in entropy is negative? 7. Conjugate base for Bronsted acids H2O and HF are : 8. Which is the correct thermal stability order for H2E (E = O, S, Se, Te and Po)? 9. For the cell reaction 2Fe3+(aq) + 2I– (aq) $$ \to $$ 2Fe2+(aq) + I2(aq) $${E_{cell}^\Theta }$$ = 0.24 V at 298 K. The st 10. 4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is : 11. Which of the following diatomic molecular species has only $$\pi $$ bonds according to Molecular Orbital Theory? 12. The compound that is most difficult to protonate is : 13. The number of sigma ($$\sigma $$) and pi ($$\pi $$) bonds in pent-2-en-4-yne is - 14. For an ideal solution, the correct option is : 15. Which of the following series of transitions in the spectrum of hydrogen atom falls in visible region? 16. The mixture that forms maximum boiling azeotrope is : 17. Which will make basic buffer? 18. Match the following : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-style:solid;border-width:0px;font 19. Match the Xenon compounds in Column-I with its structure in Column-II and assign the correct code : 20. Which of the following species is not stable? 21. For the chemical reaction N2(g) + 3H2(g) ⇌ 2NH3(g) the correct option is : 22. The non-essential amino acid among the following is : 23. Which of the following is incorrect statement? 24. An alkene “A” on reaction with O3 and Zn + H2O gives propanone and ethanal in equimolar ratio. Addition of HCl to alkene 25. The correct order of the basic strength of methyl substituted amines in aqueous solution is : 26. The major product of the following reaction is : 27. Among the following, the reaction that proceeds through an electrophilic substitution, is : 28. Under isothermal condition, a gas at 300 K expands from 0.1 L to 0.25 L against a constant external pressure of 2 bar. T 29. Which of the following reactions are disproportionation reaction? (a) 2Cu+ $$ \to $$ Cu2+ + Cu0 (b) 3MnO42- + 4H+ $$ \t 30. The correct structure of tribromooctaoxide is : 31. Identify the incorrect statement related to PCl5 from the following : 32. The manganate and permanganate ions are tetrahedral due to : 33. What is the correct electronic configuration of the central atom in K4[Fe(CN)6] based on crystal field theory? 34. pH of a saturated solution of Ca(OH)2 is 9. The solubility product (Ksp) of Ca(OH)2 is : 35. The most suitable reagent for the following conversion, is :

Physics

NEET 2019

MCQ (Single Correct Answer)

-1

A block of mass 10 kg is in contact against the inner wall of a hollow cylindrical drum of radius 1 m. The coefficient of friction between the block and the inner wall of the cylinder is 0.1. The minimum angular velocity needed for the cylinder to keep the block stationary when the cylinder is vertical and rotating about its axis, will be : (g = 10 m/s²)

$${{10} \over {2\pi }}$$ rad/s

10 rad/s

10 $$\pi $$ rad/s

$$\sqrt {10} $$ rad/s

NEET 2019

MCQ (Single Correct Answer)

-1

A solid cylinder of mass 2 kg and radius 4 cm is rotating about its axis at the rate of 3 rpm. The torque required to stop after 2$$\pi $$ revolutions is :

2 × 10^–3 N m

2 × 10^–6 N m

2 × 10⁶ N m

12 × 10^–4 N m

NEET 2019

MCQ (Single Correct Answer)

-1

The speed of a swimmer in still water is 20 m/s. The speed of river water is 10 m/s and is flowing due east. If he is standing on the south bank and wishes to cross the river along the shortest path, the angle at which he should make his strokes w.r.t. north is given by :

0^o

45^o west

30^o west

NEET 2019

MCQ (Single Correct Answer)

-1

A hollow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the centre :

zero as r increases for r < R, decreases as r increases for r > R

zero as r increases for r < R, increases as r increases for r > R.

decreases as r increases for r < R and for r > R.

increases as r increases for r < R and for r > R.

PREVIOUS NEXT

NEET Papers

All year-wise previous year question papers

2026