AIIMS 2019 | AIIMS Year Wise Previous Years Questions

Biology

1. Which of the following is correct? 2. Chimeric DNA is 3. Which of the following are homosporous? 4. What is the site of $$C_3$$ cycle in $$C_3$$ and $$C_4$$ plants? 5. Which of the following represent zygomorphic symmetry? 6. In Ti-plasmid, which of the following is removed? 7. Which statement is correct? 8. The genetic codes of arginine are 9. King of spices is 10. ATP formation occurs through which of the following? 11. What are the requirements in tissue culture? 12. Oxytocin and ADH are produced by hypothalamus and released from 13. Characteristic of female cockroach 14. Which of the following linkage is found in sucrose? 15. Which cell is found in mucus secreting organs? 16. Glucose on reacting with Benedict's solution may give the following precipitates except 17. Cervical vertebrae differ from other vertebrae in having 18. Mark the incorrect statement for inbreeding. 19. Animal of which phylum have hooks and suckers and are endoparasite on other animals? 20. Select the wrong statement from the following. 21. Protein on reaction with which yields Ruhemann's purple? 22. Gene library or DNA library has the collection of 23. Which of the following are all nucleotides? 24. Match the following columns and choose the correct option from the codes given below. .tg {border-collapse:collapse;bo 25. Match the following columns and choose the correct option from the codes given below. .tg {border-collapse:collapse;bo 26. Which of the following is incorrect? 27. The process of removal of anther from the flower bud before it dehisces is called as 28. Match the following columns and choose the correct option from the codes given below. .tg {border-collapse:collapse;bo 29. Match the following columns and choose the correct option from the codes given below. .tg {border-collapse:collapse;bo 30. Match the following columns and choose the correct option from the codes given below. .tg {border-collapse:collapse;bo 31. What is the function of Bowman's capsule and glomerulus? 32. Virus free plants can be formed by 33. Immunity tolerance developed by 34. Hairy root disease of dicot plants is caused by 35. Choose the correct option. 36. Identify the given diagram of tissue performing secretion and absorption. 37. Identify A, B and C 38. Select the correct option w.r.t. age pyramids. 39. Blood group of the father is ‘A’ and blood group of mother is ‘B’. Then predict the blood group of the progeny 40. If mitochondria is absent in mature RBC, what will be the source of energy? 41. Assertion : Cholecystokinin is released by duodenum. Reason : It activates pepsinogen and bile juice. 42. Assertion : SA node malfunctioning leads to disturbance of heart rate. Reason : SA node is the pacemaker of heart produc 43. Assertion : Selaginella and Salvinia are homosporous. Reason : In pteridophyte, Lycopodium is precursor of seed habit. 44. Assertion : Gibberellin is useful in early seed production in conifers. Reason : Ethephon is responsible for early ripen 45. Assertion : Heterospory and retention of female gametophyte are responsible for origin of seed habit in Selaginella. Rea 46. Assertion : Type-I diabetes is caused by destruction of $$\beta$$-cells of islets of Langerhans. Reason : Insulin can be 47. Assertion : Pituitary gland releases a hormone which is helpful in childbirth. Reason : Pituitary gland releases vasopre 48. Assertion : Gastrin is a hormone that is released from the gastrointestinal tract and helps in digestion. Reason : It pr 49. Assertion : Biofortified crop is a source of higher proteins, minerals and healthier fats. Reason : Azolla is biofertili 50. Assertion : Respiratory pathway is considered as an amphibolic pathway. Reason : It involves both anabolism and cataboli 51. Assertion : Down’s syndrome, Klinefelter’s syndrome and Turner’s syndrome are chromosomal disorders. Reason : In Klinefe 52. Assertion : Deficiency of an element may lead to scurvy. Reason : Daily requirement of ascorbic acid is 5 mg/day. 53. Assertion : Cannabinoids are drugs of abuse. Reason : They affect cardiovascular system and central nervous system activ 54. Assertion : Malpighian tubules are excretory organs in most of the insects. Reason : These help in excretion of urea and 55. Assertion : In commensalism, one organism is benefitted and other is unaffected. Reason : Cattle egret bird and cattle i 56. Assertion : In $$\mathrm{C}_3$$ cycle, the first stable compound is $$3 \mathrm{C}$$ compound. Reason : In $$\mathrm{C} 57. Assertion : In eukaryotes, transcription occurs in nucleus. Reason : In bacteria, transcription and translation occurs i 58. Assertion : Biofortification is used to increase nutrient value of crops. Reason : Meristem culture is used to obtain vi 59. Assertion : Calcium required for skeletal muscle contraction. Reason : Calcium influx releases acetylcholine at neuromus 60. Assertion : Parthenocarpy involves the formation of seedless fruit. Reason : Apomixis occurs without fertilisation.

Chemistry

1. Out of $$\mathrm{BeF}_2, \mathrm{MgF}_2, \mathrm{CaF}_2, \mathrm{SrF}_2$$ which has maximum solubility? 2. Which of the following statement is correct for oleum? 3. Which of the following can react with $$\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$$ ? 4. Which element can have oxidation state from 4 to 6? 5. Order of acidic nature 6. The vapour pressure of pure $$\mathrm{CHCl}_3$$ and $$\mathrm{CH}_2 \mathrm{Cl}_2$$ are 200 and $$41.5 \mathrm{~atm}$$ r 7. Correct order of bond dissociation energy 8. The tetrahedral voids are present in 0.5 mole of hcp crystal structure 9. Find out time period of Ist order reaction. When reaction complete $$2 / 3 \mathrm{rd}$$. If the value of rate constant 10. Compare stability of free radicals (I) $$\mathrm{CH}_3-\mathop C\limits^ \bullet H-\mathrm{CH}_3$$ (II) (III) $$\matho 11. Find out the products of reaction 12. If boiling point of water is $$100^{\circ} \mathrm{C}$$. How much gram of $$\mathrm{NaCl}$$ is added in $$500 \mathrm{~g 13. (i) $$\mathrm{F}_3 \mathrm{C}-\mathrm{COOH}$$, (ii) $$\mathrm{CH}_3 \mathrm{COOH}$$, (iii) $$\mathrm{C}_6 \mathrm{H}_5 \ 14. The correct relation is 15. $$\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}$$ is a 16. Find empirical formula of the compound if $$M=68 \%$$ (atomic mass $$=34$$ ) and remaining $$32 \%$$ oxygen. 17. A bulb is emitted electromagnetic radiation of $$660 \mathrm{~nm}$$ wavelength. The total energy of radiation is $$3 \ti 18. Yellow colour of chlorine water fades because of 19. Which have melting point below $$500^{\circ} \mathrm{C}$$ ? 20. Which of the following inert gas participate in chemical reaction? 21. Which of the following is correct order of packing efficiency? 22. Cell notation, $$\begin{gathered} M\left|M^{2+} \| M^{2+}\right| M. \\ 0.01 \quad 0.0001 \end{gathered}$$ If value of $$ 23. Which of the following has maximum iron content? 24. $$\mathrm{pH}$$ of a salt solution of weak acid $$(\mathrm{p} K_a=4)$$ and weak base $$(\mathrm{p} K_b=5)$$ at $$25^{\ci 25. Correct increasing order for the wavelength of absorption in the visible region for the complexes of $$\mathrm{Co}^{3+}$ 26. At $$25^{\circ} \mathrm{C}, 1$$ mole of butane is heated then $$\mathrm{CO}_2$$ and $$\mathrm{H}_2 \mathrm{O}$$ liquid i 27. What is the activation energy $$(\mathrm{kJ} / \mathrm{mol})$$ for a reaction if its rate constant doubles when the temp 28. $$\mathrm{H}_2 \mathrm{O}_2$$ is obtained by which of the following? 29. Which has least covalent radius? 30. Which give coloured carbonate precipitate? 31. Which of the following, number of lone pair at central atom zero $$\mathrm{XeO}_3, \mathrm{XeO}_2 \mathrm{~F}_2, \mathrm 32. Write IUPAC name of following compound. 33. Correct order of basic strength is 34. Which is least soluble? 35. Correct order for reaction with alcoholic KOH 36. Which is most stable conformer of ethan-1, 2-diol? 37. Which pair of elements has maximum electronegativity difference? 38. Correct order of electrophillic substitution reaction is 39. Which of the following complex is optically inactive? 40. Match the following columns. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:s 41. Assertion : The chemical properties of different isotope are same. Reason : Isotopes having same number of neutron. 42. Assertion : Out of $$\mathrm{CrO}_3$$ and $$\mathrm{Al}_2 \mathrm{O}_3, \mathrm{CrO}_3$$ having lower melting point than 43. Assertion : $$U$$ is state function. Reason : $$T$$ is an intensive property. 44. Assertion : $$\mathrm{BO}_3^{-3}$$ and $$\mathrm{SO}_3^{-2}$$ are not isostructural. Reason : In $$\mathrm{SO}_3^{2-}$$ 45. Assertion : Tert-butyl methyl ether react with $$\mathrm{HBr}$$ to form tert butyl, $$\left(\mathrm{CH}_3\right)_3 \math 46. Assertion : A spherical water drops become flaton flatter surface. Reason : It become flat due to gravity. 47. Assertion : Two sugar units joined by 1, 2-glycosidic bond in sucrose. Reason : It contains $$\mathrm{C}_1$$-glucose and 48. Assertion : $$\mathrm{S}_2 \mathrm{O}_7^{2-}$$ and $$\mathrm{Cr}_2 \mathrm{O}_7^{2-}$$ both exist. Reason : Both have sa 49. Assertion : ZnO becomes yellow when it is heated. Reason : The anionic sites occupied by unpaired electrons (due to F-ce 50. Assertion : $$\mathrm{Yb}^{2+}$$ is more stable in compare to $$\mathrm{Gd}^{+2}$$. Reason : The electronic configuratio 51. Assertion : Glucose does not gives 2, 4- DNP test. Reason : Glucose exists in cyclic hemiacetal form. 52. Assertion : Phenol reacts with $$\mathrm{CH}_3 \mathrm{I}$$ in presence of $$\mathrm{NaOH}$$ to form methoxybenzene. Rea 53. Assertion : Nylon-6 is condensation polymer. Reason : It is polymer of caprolactum. 54. Assertion : Tert-butyl amine can be formed by Gabriel phthalimide synthesis. Reason : It follow $$\mathrm{S}_{\mathrm{N} 55. Assertion : Anhydrides are more reactive than ester for nucleophilic substitution. Reason : $$RCOO -$$ is better leaving 56. Assertion : Propene reacts with $$\mathrm{HI}$$ in presence of peroxide give 1-iodopropane. Reason : $$1^{\circ}$$ free 57. Assertion : For liquid dishwashing non-ionic type of detergent are used. Reason : Remove grease and oil by micelle forma 58. Assertion : $$d^5$$ configuration is more stable than $$d^4$$. Reason : $$d^5$$ has more exchange energy as compared to 59. Assertion : The graph between $$p V$$ v/s $$\frac{1}{V}$$ is a straight line. Reason : For adiabatic process, $$p \propt 60. Assertion : Tryptophan is an example of non-essential amino acids. Reason : The amino acids that are not synthesised in

Physics

1. A gun applied a force $F$ on a bullet which is given by $$F=\left(100-0.5 \times 10^5 t\right) \mathrm{N}$$. The bullet 2. A transformer with turns ratio $$\frac{N_1}{N_2}=\frac{50}{1}$$ is connected to a $$120 \mathrm{~V}$$ AC supply. If prim 3. A proton is projected with velocity $$\mathbf{v}=2 \hat{\mathbf{i}}$$ in a region where magnetic field $$\mathbf{B}=(\ha 4. The given transistor operates in saturation region then what should be the value of $$V_{B B}$$ ? $$\begin{aligned} &amp 5. In figure, two parallel infinitely long current carrying wires are shown. If resultant magnetic field at point $$A$$ is 6. The temperature of food material in refrigerator is 4$$^\circ$$C and temperature of environment is 15$$^\circ$$C. If car 7. A string wave equation is given $$y=0.002 \sin (300 t-15 x)$$ and mass density is $$(\mu=0.1 \mathrm{~kg} / \mathrm{m})$ 8. If maximum energy is stored in a capacitor at t = 0, then find the time after which current in the circuit will be maxim 9. If voltage across a zener diode is 6V, then find out the value of maximum resistance in this condition. 10. Two circular loops having same radius $$(R=10 \mathrm{~cm})$$ and same current $$\frac{7}{2} \mathrm{~A}$$ are placed al 11. Initially spring in its natural length now a block at mass 0.25 kg is released then find out maximum force by system on 12. If $$7 \mathrm{~gm} \mathrm{~N}_2$$ is mixed with $$20 \mathrm{~gm} \mathrm{~Ar}$$, there $$\frac{C_p}{C_V}$$ of mixture 13. Distance of 5th dark fringe from centre is $$4 \mathrm{~mm}$$. If $$D=2 \mathrm{~m}, \lambda=600 \mathrm{~nm}$$, then di 14. A sphere pure rolls on a rough inclined plane with initial velocity 2.8 m/s. Find the maximum distance on the inclined p 15. Find gravitational field at a distance of $$2000 \mathrm{~km}$$ from the centre of earth. (Given $$R_{\text {earth }}=64 16. Two sources of sound S$$_1$$ and S$$_2$$ are moving towards and away from a stationary observer with the same speed resp 17. In the given circuit, find charge on capacitor after 1s of opening the switch at $$t=\infty$$. 18. In an isobaric process, the work done by a di-atomic gas is 10 J, the heat given to the gas will be 19. A capacitor of capacitance $$15 \mu \mathrm{F}$$ having dielectric slab of $$\varepsilon_r=2.5$$, dielectric strength $$ 20. For a wire $$\frac{R}{\ell}=\frac{1}{2}$$ and length of wire is $$\ell=5 \mathrm{~cm}$$. If potential difference of $$\m 21. If modulation index, $$\mu=\frac{1}{2}$$ and $$V_m=2$$, then $$V_C$$ is 22. A body of mass $$5 \times 10^3 \mathrm{~kg}$$ moving with speed $$2 \mathrm{~m} / \mathrm{s}$$ collides with a body of m 23. If focal length of objective and eye lenses are $$10 \mathrm{~cm}$$ and $$10 \mathrm{~mm}$$ respectively and tube length 24. An electron is moving in a circle of radius 2m with speed of 4 m/s. Find the acceleration of the electron. 25. If a small orifice is made at a height of 0.25 m from the ground, the horizontal range of water stream will be 26. Calculate the mean percentage error in five observations, 80.0, 80.5, 81.0, 81.5, 82 27. Calculate the focal length of given lens if the magnification is $$-$$0 5. 28. In a $$L C R$$ series circuit source voltage is $$120 \mathrm{~V}$$ and voltage in inductor $$50 \mathrm{~V}$$ and resis 29. Determine the pressure difference in tube of non-uniform cross sectional area as shown in figure. $$\Delta P=?, d_1=5 \m 30. $$\alpha$$-particle is revolving in a circular path with radius $$r$$ with speed $$v$$, then find the value of magnetic 31. 15 eV is given to electron in 4th orbit then find its final energy when it comes out of H-atom. 32. If half life of an element is $$69.3 \mathrm{~h}$$, then how much of its percent will decay in 10th to 11th $$\mathrm{h} 33. If the speed of sound in air is 330 m/s then, find the number of tones present in an open organ pipe of length 1 m whose 34. A light of wavelength $$500 \mathrm{~nm}$$ is incident on a Young's double slit. The distance between slit and screen is 35. In an isothermal process 2 water drops of radius $$1 \mathrm{~mm}$$ are combined to form a bigger drop. Find the energy 36. If temperature of Sun $$=6000 \mathrm{~K}$$, radius of Sun is $$7.2 \times 10^5 \mathrm{~km}$$, radius of Earth $$=6000 37. Calculate radiation power for sphere whose temperature is 227$$^\circ$$C, radius 2 m and emissivity 0.8. 38. If two protons are moving with speed $$v=4.5 \times 10^5 \mathrm{~m} / \mathrm{s}$$ parallel to each other then find the 39. An ideal gas initially at pressure 1 bar is being compressed from $$30 \mathrm{~m}^3$$ to $$10 \mathrm{~m}^3$$ volume an 40. A current of $$10 \mathrm{~A}$$ is passing through a metallic wire of cross-sectional area $$4 \times 10^{-6} \mathrm{~m 41. Assertion : A metallic surface is moved in and out in magnetic field then emf is induced in it. Reason : Eddy current wi 42. Assertion : There is no loss in energy in elastic collision. Reason : Linear momentum is conserved in elastic collision. 43. Assertion : Paramagnetic substances get poorly attracted in magnetic field. Reason : Because magnetic dipoles are aligne 44. Assertion : Distance between position of bright and dark fringe remain same in YDSE. Reason : Fringe width, $$\beta=\fra 45. Assertion : In both radioactivity and photoelectric effect electrons may be ejected. Reason : In photoelectric effect an 46. Assertion : Electron moving perpendicular to B will perform circular motion. Reason : Force by magnetic field is perpend 47. Assertion : In ionospheric reflection, phase change does not occur with the radio wave. Reason : The ionosphere reflecti 48. Assertion : Vibrational degree of freedom of a di-atomic gas molecule appears at every high temperature. Reason : Di-ato 49. Assertion : $$\mathrm{NH}_3$$ is liquidities more easily than $$\mathrm{CO}_2$$. Reason : Critical temperature of $$\mat 50. Assertion : In adiabatic process work is independent of the path. Reason : In adiabatic process work done is equal to ne 51. Assertion : Water drops take spherical shape when falling freely. Reason : Water has minimum surface tension among all l 52. Assertion : Photodiode and solar cell work on same mechanism. Reason : Area is large for solar cell. 53. Assertion : Sometimes insects can walk on water. Reason : The gravitational force on insect is balanced by force due sur 54. Assertion : Heavy water is used to slow neutron in nuclear reactor. Reason : It does not react with slow neutron and mas 55. Assertion : Incoming light reflected by earth is partially polarised. Reason : Atmospheric particle polarise the light. 56. Assertion : Amplitude modulation shows more interference than frequency modulation with noise. Reason : Interference is 57. Assertion : A charge particle is released from rest in magnetic field then it will move in a circular path. Reason : Wor 58. Assertion : A glass ball is dropped on concrete floor can easily get broken compared if it is dropped on wooden floor. R 59. Assertion : Even though net external force on a body is zero, momentum need not to conserved. Reason : The internal inte 60. Assertion : For an element generally $$N \geq Z$$ ( $$N=$$ number of neutrons, $$Z=$$ atomic number) Reason : Neutrons a

AIIMS 2019

MCQ (Single Correct Answer)

-0.33

If boiling point of water is $$100^{\circ} \mathrm{C}$$. How much gram of $$\mathrm{NaCl}$$ is added in $$500 \mathrm{~g}$$ of water to increase its boiling point of water by approx $$1^{\circ} \mathrm{C}\left(K_b\right)_{\mathrm{H}_2 \mathrm{O}}=0.52 \mathrm{~K} \times \mathrm{kg} /$$ mole.

2.812 g

28.12 g

14.06 g

7.03 g

AIIMS 2019

MCQ (Single Correct Answer)

-0.33

(i) $$\mathrm{F}_3 \mathrm{C}-\mathrm{COOH}$$, (ii) $$\mathrm{CH}_3 \mathrm{COOH}$$, (iii) $$\mathrm{C}_6 \mathrm{H}_5 \mathrm{COOH}$$, (iv) $$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{COOH}$$ Correct order of $$\mathrm{p} K_a$$ value is

(i) > (iii) > (ii) > (iv)

(iv) > (ii) > (iii) > (i)

(iv) > (iii) > (ii) > (i)

(i) > (ii) > (iv) > (iii)

AIIMS 2019

MCQ (Single Correct Answer)

-0.33

The correct relation is

$$\Delta G=-R T \ln K / Q$$

$$\Delta G=+R T \ln K$$

$$\Delta G=-R T \ln Q / K$$

$$\Delta G=+R T \ln Q$$