| 1. | Proteases are added during isolation of DNA for genetic engineering..... | 0 | |
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| 2. | To avoid the precipitation of hydroxides of Zn2+,Mn2+ and Ni2+ along with those of&nbs.... | 0 | |
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| 3. | A square loop of side 10 cm with its sides parallel to X and Y axes is moved with a velocity of .... | 1 | |
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| 4. | Unpolarised light is incident from air on a plane surface of a material of refractive index '&nb.... | 0 | |
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| 5. | The number of electrons delivered at the cathode during electrolysis by a current of 1 ampere in.... | 0 | |
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| 6. | Account for the following :\n\\(Cr ^{2+}\\) is a strong reducing agent..... | 0 | |
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| 7. | In the following transition elements, the lowest melting point and boiling point is exhibited by.... | 0 | |
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| 8. | Match the column-I with column II;\n\n\n\n\nColumn I\n(Structure)\n\n\nColumn II\n(Characterstic.... | 0 | |
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| 9. | Three forces acting on a body are shown in the figure. To have the resultant force only along th.... | 0 | |
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| 10. | Match column I with column II, and choose the correct combination from the options given below:\.... | 0 | |
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| 11. | The coordinates of the foot of the perpendicular drawn from the point \\((-2,8,7)\\) on the XZ-p.... | 0 | |
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| 12. | Which of the following hydrocarbons has the lowest dipole moment?.... | 0 | |
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| 13. | A wire of length L and cross-sectional area A is made of a material of Young's modulus Y. If the.... | 0 | |
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| 14. | Two thin lenses, when in contact, produce a combination of power + 10 D. When they are.... | 0 | |
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| 15. | The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is ( \\(a_0\\) is .... | 0 | |
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| 16. | The presence of polar bonds in a polyatomic molecule suggests that the molecule has non–ze.... | 0 | |
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| 17. | A closely wound circular coil of radius \\(6.28 cm\\), having 50 turns carries a steady current .... | 0 | |
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| 18. | For a gaseous reaction 2B→A, the equilibrium constant Kp is ...... to/than Kc.... | 0 | |
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| 19. | State two conditions necessary for light from two sources to be coherent..... | 0 | |
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| 20. | What does part 6,6 mean in the polymer Nylon-6,6 ?.... | 0 | |
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| 21. | Write one use of the electromagnetic waves of frequency range from 1016 Hz to 1020 Hz..... | 0 | |
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| 22. | Among Ni(CO)4,Ni(CN)42-,NiCl42- species, the hybridisation states at the NI atom are, respective.... | 0 | |
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| 23. | An element with molar mass \\(27 g mol ^{-1}\\) forms a cubic unit cell with edge length \\(300 .... | 0 | |
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| 24. | A cylindrical conductor of resistance R is connected to a battery. The drift velocity of electro.... | 1 | |
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| 25. | A pair of dice is thrown and the sum of the numbers appearing on the dice is observed to be 7 . .... | 0 | |
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| 26. | A capacitor (C) and resistor (R) are connected in series with an ac source of voltage of frequen.... | 1 | | Counter-Strike: Source
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| 27. | Define electrical conductivity of a wire. Give its SI unit..... | 0 | |
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| 28. | (a) State two distinguishing features of nuclear force.(b) Draw a plot showing the variation of .... | 0 | |
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| 29. | Give reasons for the following :\n(i) In semicarbazide, there are two \\(-\\mathrm{NH}_2\\) grou.... | 0 | |
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| 30. | The threshold voltage for a p-n junction diode used in the circuit is \\(0.7 \\mathrm{~V}\\). Th.... | 0 | |
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| 31. | Write the structure of the major organic product expected from the following reaction\n.... | 0 | |
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| 32. | Write the structure of foul smelling compound obtained when aniline is treated with chloroform i.... | 0 | |
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| 33. | Give reasons: CrO3 is an acid anhydride..... | 0 | |
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| 34. | A solution of a non-volatile solute in water freczes at -0.30°C. Th vapor pressure of pure .... | 0 | |
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| 35. | Give reasons for the following in one or two sentences.(i) Hydrogen bromide cannot be prepared b.... | 0 | |
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| 36. | Suppose \\(a, b\\) denote the distinct real roots of the quadratic polynomial \\(x^2+20 x-2020=0.... | 0 | |
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| 37. | In which of the following compounds B-F length is shortest?.... | 0 | |
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| 38. | In which of the following pairs, the two species are isostructural?.... | 0 | |
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| 39. | Given below is a list of steps Meselson and Stahl carried out in their experiment to prove that .... | 0 | |
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| 40. | The major product obtained in the following reaction is\n.... | 0 | |
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| 41. | Reactivity order of halides for dehydrohalogenation is:.... | 1 | |
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| 42. | Increasing order of acid strength among p-methoxyphenol, p-methylphenol and p-nitrophenol is:&nb.... | 0 | |
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| 43. | A hydrogen atom is in its second excited state. Find out the ratio of the maximum and minimum wa.... | 0 | |
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| 44. | What is difference between an emulsion and a gel ?.... | 0 | |
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| 45. | Write the expression for the de-Broglie wavelength associated with an electron accelerated throu.... | 0 | |
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| 46. | (a) By stating sign conventions and assumptions used derive the relation betweenin case of a con.... | 10 | |
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| 47. | Explain briefly :(a) Carbylamine reaction(b) Gabriel phthalimide synthesis.... | 1 | |
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| 48. | What is the difference between an Ambidentate ligand and a Bidentate ligand?.... | 1 | |
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| 49. | A metallic spherical shell has an inner radius R1 and outer radius R2 . A charge Q is placed at .... | 0 | |
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| 50. | Which of the following statement is correct?.... | 0 | |
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| 51. | A double convex lens is made of glass of refractive index 1.55 with both faces of the same radiu.... | 0 | |
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| 52. | Let E1(r),E2(r) and E3(r) be the respective electric fields at a distance r from a point charge .... | 1 | |
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| 53. | Find:\\[\\int e^x(\\cos x-\\sin x) \\operatorname{cosec}^2 x d x\\].... | 0 | |
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| 54. | The wire loopPQRSP formed by joining two semicircular wires of radiiR1 andR2 carries a current/ .... | 0 | |
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| 55. | Write two differences between Order of reaction and Molecularity of reaction..... | 0 | |
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| 56. | Reduction potentials of 4 metals A, B, C and D are-1.66 V, +0/34 V, +0.80V and -0.76 V . What is.... | 0 | |
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| 57. | What type of deviation from Raoult's law is shown by a mixture of ethanol and acetone? Give reas.... | 0 | |
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| 58. | An organic compound (X) having molecular formula \\(\\mathrm{C}_5 \\mathrm{H}_{10} \\mathrm{O}\\.... | 0 | |
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| 59. | In a Young's double-slit experiment, the screen is moved away from the plane of the slits. What .... | 0 | |
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| 60. | Let \\(\\vec{a}\\) and \\(\\vec{b}\\) be two unit vectors and \\(\\theta\\) is the angle between.... | 0 | |
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| 61. | How many bulbs should he sell to earn maximum profit?.... | 0 | |
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| 62. | How many ions are produced in the solution from the complex \\(\\left[\\mathrm{Ni}\\left(\\mathr.... | 0 | |
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| 63. | Account for the following :\n(i) Transition metals generally form coloured compounds.\n(ii.... | 0 | |
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| 64. | During the process of β- decay, 1.... | 0 | |
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| 65. | For a given amplitude modulated wave, the maximum amplitude is 20 V and the minimum amplitude is.... | 0 | | Amplitude
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| 66. | The maximum value of slope of the curve \\(y=-x^3+3 x^2+12 x-5\\) is.... | 0 | |
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| 67. | (i) Monochromatic light is incident on a surface separating two media. The frequency of the ligh.... | 0 | |
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| 68. | A company manufactures two types of novelty souvenirs made of plywood. Souvenirs of type A requi.... | 0 | |
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| 69. | Show that the function \\(f\\) in \\(A=R-\\left\\{\\frac{2}{3}\\right\\}\\) defined as \\(f(x)=\.... | 0 | |
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| 70. | If \\(y \\cdot \\sqrt{x^2+1}=\\log \\left(\\sqrt{x^2+1}-x\\right)\\), show that \\(\\left(x^2+1\.... | 0 | |
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| 71. | A light bulb and a coil are connected to an ac source. The switch is closed and after some.... | 0 | |
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| 72. | Using integration, find the area of the greatest rectangle that can be inscribed in an ellipse&n.... | 0 | |
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| 73. | Among the following ions, which one has the highest paramagnetism?.... | 0 | |
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| 74. | What are the common oxidation states of Cerium (At. no. 58)?.... | 0 | |
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| 75. | Write the structure of the major organic product expected from the following reaction.\n.... | 0 | |
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| 76. | Complete the following reaction with appropriate structure\n.... | 0 | |
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| 77. | C030C1030-C130C1130+C230C1230-…+C2030C3030 is equal to -.... | 0 | |
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| 78. | Give the structure of the monomer of PVC..... | 0 | |
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| 79. | Write the structure of the main products formed in the following reactions :\n\\(HCHO + CH _3 Mg.... | 0 | |
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| 80. | Write the reaction of Glucose with :\n\\(HI\\).... | 0 | |
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| 81. | What is used to control the cause of acidity in the stomach?.... | 0 | |
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| 82. | The rapid change of pH near the stoichiometric point of an acid-base titration is the basis.... | 0 | |
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| 83. | The incorrect statement about denaturation of proteins is :.... | 0 | |
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| 84. | Predict the number of unpaired electrons in the square planarPt(CN)42- ion..... | 0 | |
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| 85. | Assertion (A) : Matrix \\(A=\\left[\\begin{array}{rrr}0 & -3 & 5 \\\\ 3 & 0 & -2.... | 0 | |
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| 86. | PW REAL TEST SERIES JEE 2025 | Physics.... | 0 | | Portal
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| 87. | Reaction of 1-phenyl-2-chloropropane with alcoholic \\(KOH\\) gives mainly :.... | 1 | |
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| 88. | Answer the following questions on the basis of the figure given below :\n\nWhy do metals of the .... | 1 | |
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| 89. | PW REAL TEST SERIES | 12 | JEE 2025 | Maths.... | 2 | |
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| 90. | A plane polarized blue light ray is incident on a prism such that there is no reflection from th.... | 0 | |
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| 91. | The brown precipitate formed by passing ammonia into Nessler’s reagent in due to the forma.... | 0 | |
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| 92. | Consider the following reaction and identify the product (P).
.... | 0 | |
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| 93. | A window is provided in the middle of a wall. Its image is obtained on the opposite wall at a di.... | 1 | |
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| 94. | What would be the side products formed with primary amine in the Hofmann bromamide degradation r.... | 0 | |
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| 95. | In the estimation of sulphur in an organic compound, fuming nitric acid is used to convert sulph.... | 0 | |
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| 96. | Given below are two statements: one is labelled as Assertion A and the other is labelled as Reas.... | 0 | |
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| 97. | A biconvex lens of focal lengthf forms a circular image of radiusr of sun in focal plane. Then w.... | 0 | |
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| 98. | In Arrhenius equation for a certain reaction, the value of A and E2 (activation energy) are 4.... | 0 | |
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| 99. | The value of enthalpy change, Hβ–Hα(inJmol–1), at 300 K is ________.When .... | 0 | |
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| 100. | The value of x is ___.... | 0 | |
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