| 1. | Mutation in the gene that codes for an enzyme phenylalanine hydroxylase occurs..... | 0 | |
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| 2. | Find :\\[\\int \\frac{2}{(1-x)\\left(1+x^2\\right)} d x\\].... | 0 | |
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| 3. | Which one of the following ions exhibits d-d transition and paramagnetism as well?.... | 0 | |
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| 4. | A biconvex lens made up of glass of refractive index 1·5, forms a real image of an object.... | 0 | |
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| 5. | An insurance company insured 3000 cyclists, 6000 scooter drivers and 9000 car drivers. The proba.... | 0 | |
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| 6. | The basic character of hydrides of the V group elements decreases in the order:.... | 0 | |
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| 7. | Invert sugar is an equimolar mixture of.... | 0 | |
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| 8. | A one litre flask is full of brown bromine vapour. The intensity of brown colour of vapour will .... | 0 | |
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| 9. | Acidified permanganate solution does not oxidize:.... | 0 | |
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| 10. | The number of atoms in \(0.1 mol\) of a triatomic gas is: NA=6.02×1023mol-1:.... | 0 | |
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| 11. | Assertion : Dextro-isomers rotate the plane of polarized light towards right.\nReason : Dextro-i.... | 0 | |
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| 12. | Crystal field stabilization energy for high spin d4 octahedral complex is:.... | 0 | |
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| 13. | An equilateral glass prism has a refractive index 1.6 in air. Calculate the angle of minimum dev.... | 0 | |
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| 14. | An organic compound \\(\\left(\\mathrm{C}_8 \\mathrm{H}_{10} \\mathrm{O}_2\\right)\\) rotates pl.... | 0 | |
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| 15. | A beam of light consisting of red, green and blue colours is incident on a right-angled prism. T.... | 0 | |
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| 16. | For the first order reaction,2N2O5(g)→4NO2(g)+O2(g)2.... | 0 | |
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| 17. | If \\(A\\) is a square matrix satisfying \\(A^{\\prime} A=I\\), write the value of \\(|A|\\)..... | 0 | |
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| 18. | A 200μF parallel plate capacitor having plate separation of 5 mm is charged .... | 0 | |
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| 19. | \\(CH _3 CHO\\) is more reactive than \\(CH _3 COCH _3\\) towards reaction with \\(HCN\\). Why?.... | 0 | |
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| 20. | Write the slope value obtained in the plot of \\(\\log \\left[R_0\\right] /[R] \\mathrm{Vs}\\). .... | 0 | |
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| 21. | A network of four capacitors each of capacitance 12μF is connected to a battery as shown in.... | 0 | |
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| 22. | (a) An object is placed in front of a concave mirror. It is observed that a virtual image is for.... | 0 | |
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| 23. | The correct order of decreasing acid strength of trichloroacetic acid (A), trifluoroacetic acid .... | 0 | |
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| 24. | Assertion (A): Alcohols have higher boiling point than alkanes of comparable molecular mass.Reas.... | 0 | |
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| 25. | If \\(y = e ^{ x }(\\sin x +\\cos x )\\), prove that \\(\\frac{ d ^2 y }{ dx ^2}-2 \\frac{ dy }{.... | 0 | |
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| 26. | Sunlight of intensity1.3kWm-2 is incident normally on a thin convex lens of focal length 20cm. I.... | 0 | |
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| 27. | Of the \\(\\mathrm{d}^4\\) species, \\(\\mathrm{Cr}^{2+}\\) is strongly reducing while \\(\\math.... | 0 | |
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| 28. | The modern atomic mass unit is based on the mass of ______.... | 0 | |
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| 29. | (a) Use Gauss's law to show that due to a uniformly charged spherical shell of radius R, the ele.... | 0 | |
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| 30. | Two coherent light waves of intensity 5×10-2Wm-2 each super-impose and produce the interfer.... | 0 | |
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| 31. | The molecules that will have dipole moment are.... | 0 | |
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| 32. | Write the hybridisation and magnetic character of the following complexes :(i) \\(\\left[\\mathr.... | 0 | |
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| 33. | An acidic solution of Cu2+salt containing 0.4 g of Cu2+ is electrolysed until all the coppe.... | 0 | |
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| 34. | Optically active 2-iodobutane on treatment with NaI in acetone gives a product which does not sh.... | 0 | |
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| 35. | A parallel plate capacitor of plate area A and plate separation d is charged to potential differ.... | 0 | |
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| 36. | Which of the following statement(s) is/are correct?.... | 0 | |
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| 37. | Two identical rods with different thermal conductivities \(k _1 \& k _2\) and different temp.... | 0 | |
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| 38. | Write equations of the following reactions :\nNitration of Phenol with concentrated nitric acid.... | 0 | |
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| 39. | (a) For which type of compounds Kjehldahl’s method is not useful?\n(b) A liquid compound s.... | 0 | |
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| 40. | Ecdysis is shedding of.... | 0 | |
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| 41. | Choose the correct option from the following;.... | 0 | |
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| 42. | Three vessels of equal capacity have gases at the same temperature and pressure. The first vesse.... | 0 | |
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| 43. | Write the role of coordination compounds with an example in each of the following :\nExtraction .... | 0 | |
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| 44. | Give reasons :\n Cooking is faster in pressure cooker than in cooking pan..... | 1 | |
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| 45. | Give reasons for the following :\nAlthough amino group is \\(o\\) - and \\(p\\)-directing in aro.... | 1 | |
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| 46. | PW REAL TEST SERIES JEE 2025 | Chemistry.... | 0 | |
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| 47. | Give one point of difference between the following :(a) Cast Iron and Pig Iron.... | 0 | |
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| 48. | If \\(\\mathrm{f}(x)=x^4-10\\), then find the approximate value of \\(\\mathrm{f}(2.1)\\)..... | 0 | |
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| 49. | The figure shows a network of five capacitors connected to a 100 V supply. Calculate the to.... | 0 | |
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| 50. | Argon is used in arc welding because of its.... | 0 | |
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| 51. | Find:\\[\\int_0^\\pi \\frac{x \\sin x}{\\left(1+\\cos ^2 x\\right)} d x\\].... | 0 | |
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| 52. | How many optically active stereoisomers are possible for butane–2, 3–diol?.... | 0 | |
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| 53. | (a) Find : \\(\\int \\frac{1}{\\sqrt{12+4 x-x^2}} d x\\)OR(b) Find : \\(\\int \\frac{ xe ^{ x }}.... | 0 | |
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| 54. | Write reasons for the following :\nAmino group is \\(o\\) - and \\(p\\)-directing in aromatic el.... | 0 | |
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| 55. | If \\(P(x)=a x^2+b x+c\\) and \\(Q(x)=-a x^2+d x+c\\), where \\(a c \\neq 0\\), then \\(P(x) Q(x.... | 0 | |
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| 56. | An organic compound is adsorbed on the surface of silica gel. Name the process of removing the o.... | 2 | |
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| 57. | Racemisation occurs in .... | 0 | |
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| 58. | Two concentric circular loops of radius \\(1 \\mathrm{~cm}\\) and \\(20 \\mathrm{~cm}\\) a.... | 0 | |
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| 59. | A basic volatile nitrogen compound gave a foul smelling gas when treated with chloroform and alc.... | 0 | |
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| 60. | Let a + b = 4, where a < 2 and let g(x) be a differentiable fu.... | 0 | |
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| 61. | Prove that \\(\\sin ^{-1}\\left(2 x \\sqrt{1-x^2}\\right)=2 \\cos ^{-1} x, \\frac{1}{\\sqrt{2}} .... | 0 | |
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| 62. | An organic compound (A) with molecular formula \\(\\mathrm{C}_5 \\mathrm{H}_{10} \\mathrm{O}\\) .... | 0 | |
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| 63. | A particle of mass \\(m\\) and charge \\(q\\) moving with a uniform velocity \\(\\vec{v}=v_{0 x}.... | 0 | |
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| 64. | Find the particular solution of the differential equation \\(x \\frac{\\mathrm{dy}}{\\mathrm{d} .... | 0 | |
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| 65. | Atomic number of Cr and Fe are respectively 24 and 26, which of the following is paramagnetic wi.... | 0 | |
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| 66. | In the nuclear reaction \\({ }_7 \\mathrm{~N}^{14}+{ }_2 \\mathrm{He}^4 \\longrightarrow \\mathr.... | 0 | |
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| 67. | A slit of width \\(0.6 \\mathrm{~mm}\\) is illuminated by a beam of light consisting of two wave.... | 0 | |
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| 68. | There is a crater of depth R100 on the surface of the moon (radius R ). A projectile is fired ve.... | 0 | |
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| 69. | Torque acting on an electric dipole placed in an electric field is maximum when the angle betwee.... | 0 | |
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| 70. | Seven capacitors each of capacitance 2μF are connected in a configuration to obtain an effe.... | 0 | |
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| 71. | Account for the following :Mn shows the highest oxidation state of +7 with oxygen but with fluor.... | 0 | |
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| 72. | Find the value of \\(k\\) so that the lines \\(x=-y=k z\\) and \\(x-2=2 y+1=-z+1\\) are perpendi.... | 0 | |
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| 73. | Cu64 (half-life =12.8 h decays by β-emission 38%, β+emission ( 19%) and electron .... | 0 | |
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| 74. | The energy of a photon of wavelength \\(\\lambda\\) is.... | 0 | |
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| 75. | In the following sequence, product I, J, L are formed , K represents a reagent\n(i) Mg/ether\n\n.... | 0 | |
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| 76. | Explain the terms (i) Q-factor, (ii) Power factor, and (iii) Wattless current..... | 0 | |
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| 77. | The hybridisation of carbon atoms in C–C single bond H–C≡C–CH=CH2is.... | 0 | |
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| 78. | The best method to prepare cyclohexene from cyclohexanol is by using.... | 0 | |
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| 79. | Carry out the following conversions :Benzyl chloride to benzyl alcohol.... | 0 | |
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| 80. | Find the equations of the diagonals of the parallelogram PQRS whose vertices are \\(P(4,2,-6), Q.... | 0 | |
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| 81. | Biological control methods are adopted from which of the following population interactions?.... | 0 | |
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| 82. | An electron with velocity \\(\\vec{v}=\\left(v_x \\hat{i}+v_y \\hat{j}\\right)\\) moves through .... | 0 | |
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| 83. | The work done to raise a mass m from the surface of the earth to a height h, which is equal to t.... | 0 | |
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| 84. | Mention what helps the entry of sperm into the ovum and write the changes occurring in the ovum .... | 0 | |
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| 85. | Define order of reaction. How does order of a reaction differ from molecularity for a complex re.... | 0 | |
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| 86. | PW REAL TEST SERIES JEE 2025 | Chemistry.... | 0 | |
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| 87. | A plane polarized blue light ray is incident on a prism such that there is no reflection from th.... | 1 | |
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| 88. | PW REAL TEST SERIES JEE 2025 | Physics.... | 0 | | Portal
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| 89. | Define electrical resistivity of a given material. Why does resistivity of a metal increase with.... | 0 | |
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| 90. | When electric dipole is placed in uniform electric field, its two charges experience equal and o.... | 1 | |
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| 91. | An atom has electronic configuration 1 s22 s22p63 s23p63 d3 4s2, you wi.... | 0 | |
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| 92. | Consider a system of two parallel metal plates of area ‘A’, each placed at a separat.... | 0 | |
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| 93. | If a Xab species emits firstly a positron, then two α and two β and in last one \(\al.... | 0 | |
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| 94. | Write the reaction of Glucose with :\\(HCN\\).... | 0 | |
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| 95. | The oxoanion which contains all equivalent Mndash;O bond is\n(I) CrO42#8722;\n(II) MnO4#8722;\n(.... | 0 | |
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| 96. | The most convenient method to protect the bottom of ship made of iron is:.... | 0 | |
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| 97. | To Verify Ohm's law, a student is provided with a test resistor \\(\\mathrm{R}_{\\mathrm{T}}\\),.... | 1 | |
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| 98. | All the lanthanoids show +3 as the common oxidation state, yet \\(Ce\\) shows +4 state because.... | 0 | |
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| 99. | Polarisation of electrons in acrolein may be written as.... | 0 | |
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| 100. | Work out the following using chemical equations “Chlorination of calcium hydroxide produce.... | 0 | |
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