JEE (MAIN) 2018 PAPER / ANSWER KEY / CatalyseR Eduventures (India) Pvt. Ltd. 1
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1 JEE (MAIN) 018 PAPER / ANSWER KEY / CatalyseR Eduventures (India) Pvt. Ltd. 1
2 JEE (MAIN) 018 PAPER / ANSWER KEY / (PAPER WITH ANSWER KEY) CODE B JEE (MAIN) PHYSICS 1. It is found that if and P c are respectively? Sol. (3) (.89,.8). The mass of a hydrogen..on the wall is nearly: Sol. (3) N/ m dr 3. A solid sphere of radius of the sphere,, r Sol. (1) mg 3Ka is: 4. Two batteries with e.m.f. the load lies between: 11.5 V and 11.6 V 5. A particle is moving in a circular. Its total energy is: Sol. (1) ZERO 6. Two masses m1 5kg and to stop the motion is : Sol. (BONUS) CLOSEST D (4) 7.3 kg 7. If the series limit.of the Pfund series is: Sol. () L / 5 8. Unpolarized light of intensity I.... The angle between polarizer A and C is: Sol. (1) An electron from various.... For large n, (A,B are constants) B Sol. (3) n A n 10. The ending of the ammeter for a silicon diode in the given circuit is : Sol. (1) 11.5 ma 11. An electron, a proton..between re, rp, r is: re rp r 1. A parallel plate capacitor.charge will be: Sol. (3) 1. n C CatalyseR Eduventures (India) Pvt. Ltd.
3 JEE (MAIN) 018 PAPER / ANSWER KEY / For an RLC circuit factor, Q is given by: O Sol. (3) L R 14. A telephonic communication bandwidth of 5 khz? Sol. (1) A granite rod of 60 cm longitudinal vibrations? Sol. (1) 10 khz 16. Seven identical circular. the point P is: Sol. () 181 MR 17. Three concentric metal shells of shell B is : a o b b c 18. In a potentiometer experiment,.of the cell An EM wave from air..following options is correct? r1 Sol. (1) r The angular width of the of each slit.) Sol. (3) 5 m A silver atom in a solid gm mole ) 7.1 N/m. From a uniform circular disc.centre of disc is : Sol. (3) 4MR 3. In a collinear collision,.after collision, is: 0 B1 4. The dipole moment of a circular loop.. The ratio B is : Sol. (1) 5. The density of a material.the density is : Sol. (1) 4.5 % CatalyseR Eduventures (India) Pvt. Ltd. 3
4 JEE (MAIN) 018 PAPER / ANSWER KEY / On interchanging the resistances, interchanging the resistances? Sol. (1) In an a.c. circuit, current are, respectively : 1000,10 8. All the graphs below are... Pick it up. 9. Two moles of an ideal monoatomic.in its internal energy. Sol. (1) (1) 189 K () -.7 kj 30. A particle is moving with particle is T, then : Sol. (1) T n 1 / R CatalyseR Eduventures (India) Pvt. Ltd. 4
5 JEE (MAIN) 018 PAPER / ANSWER KEY / CatalyseR Eduventures (India) Pvt. Ltd. 5
6 JEE (MAIN) 018 PAPER / ANSWER KEY / MATHEMATICS 31. If the tangent at.the value of c is: Sol. () If L 1 is the line of.lines L 1 and L, is: If, C are the distinct roots,. Sol. (1) 1 is equal to: Tangents are drawn.(in sq. units) of PTQ is: Sol. (3) If the centres..., then the value of b is: Sol. () 9 xz 36. If the system of..then y 10 is equal to : 37. Let S x R : x 0... Then S: Sol. (1) contains exactly two elements. 38. If sum of all the solutions.. k is equal to: A bag contains 4 red and 6 drawn ball is red, is: 5 1 x 40. Let f x x.value of Sol. () 41. Two sets A and B are. Then : A B h x is: 4. The Boolean expression.is equivalent to: Sol. (3) p CatalyseR Eduventures (India) Pvt. Ltd. 6
7 JEE (MAIN) 018 PAPER / ANSWER KEY / Tangent and normal are drawn.value of tan is: 44. If x 4 x x x x 4 x x x x 4 Sol. (1) 4,5.(A, B) is equal to: 45. The sum of the co-. x 1 is : Sol. () 46. Let a1, a, a 3,...., then m is equal to : Sol. (1) A straight line through a.., then the locus of R is: Sol. (1) 3x y xy 48. The value of Sol. () 4 sin x dx is : 1 x 49. Let g x x 1 Sol. (3) 3 1 cos, and y = 0, is : 50. For each t R, let [t].equal to t. Then - Sol. (1) is equal to If 9 items x1, x,..., x9 is : Sol. (1) 5. The integral.. is equal to : tan 3 x C 53. Let. Then the set S is equal to : Sol. (3) (an empty set) 54. Let y = y(x) be the.. is equal to : Sol. (1) 8 9 CatalyseR Eduventures (India) Pvt. Ltd. 7
8 JEE (MAIN) 018 PAPER / ANSWER KEY / Let u be a vector coplanar is equal to: Sol. (3) The length of the projection, x y z 7 is: Sol. () PQR is a triangular park of the tower (in m) is : Sol. (3) From 6 different novels and 3. The number of such arrangements is: Sol. (3) at least Let A be the sum of the first 0, then is equal to: Let the orthocenter and centroid AC as diameter, is : Sol. (1) 5 3 CatalyseR Eduventures (India) Pvt. Ltd. 8
9 JEE (MAIN) 018 PAPER / ANSWER KEY / CatalyseR Eduventures (India) Pvt. Ltd. 9
10 JEE (MAIN) 018 PAPER / ANSWER KEY / CHEMISTRY 61. Total number of lone pair of electrons in I 3 is : Sol. (1) 9 6. Which of the following salts is the most basic in aqueous solution? CH3COOK 63. Phenol reacts with methyl..a and B are respectively: Sol. (1) 64. The increasing order of basicity of the following compounds is : Sol. (1) () < (1) < (4) < (3) 65. An alkali is titrated against an acid with..a correct combination? Sol. (1) Base Weak; Acid Strong; End Point Yellow to pinkish red 66. The trans-alkenes are formed by the reduction of alkynes with: Sol. (1) Na / liq. NH The ratio of mass percent of C formula of compound CX HYO Z is: Sol. () CH 4O3 68. Hydrogen peroxide oxidizes formed are, respectively: Sol. (1) H O and H O O 69. The major product formed in the following reaction is: Sol. () 70. How long (approximate) should (Atomic weight of B = 10.8 u) Sol. (1) 3. hours 71. Which of the following lines.an exothermic reaction? Sol. (3) A and B 7. At 518 C, the rate of decomposition of a of the reaction is: Sol. (3) CatalyseR Eduventures (India) Pvt. Ltd. 10
11 JEE (MAIN) 018 PAPER / ANSWER KEY / Glucose on prolonged heating with HI gives: Sol. (3) n-hexane 74. Consider the following reaction and statements:.. The correct statements are: (I) and (III) 75. The major product of the following reaction is : 76. Phenol on treatment with CO in the. H SO 4 produces: Sol. (3) 77. An aqueous solution contains original concentration of Sol. (1) M 78. Which of the following nitrogen estimation? NH Ba? 79. When metal M is... The metal M is: Sol. (1) Al 80. An aqueous solution contains ions in aqueous solution is: The recommended concentration of. 3 Ca PO. CaOH Sol. (1) 3 Ca3 PO4. CaF 3 4 to : 8. The compound that does not produce nitrogen gas by the thermal decomposition is: Sol. () NH SO 4 4 CatalyseR Eduventures (India) Pvt. Ltd. 11
12 JEE (MAIN) 018 PAPER / ANSWER KEY / The predominant form of. Histidine = 6.0) Sol. () 84. The oxidation states of. respectively are : Sol. (1) +3, 0, and Which type of defect has the presence of cations in the interstitial sites? Sol. (1) Frenkel defect 86. The combustion of benzene constant pressure will be : Sol. () Which of the following are Lewis acids? Sol. () () BCl3 and AlCl3 88. Which of the following compounds contain(s) no covalent bond(s)? Sol. (1) KCl 89. For 1 molal aqueous solution of..freezing point? Sol. () Co HO Cl 3 3.3H O 90. According to molecular orbital theory, which of the following will not be a viable Sol. () molecule? H END OF TEST PAPER CatalyseR Eduventures (India) Pvt. Ltd. 1
13 JEE (MAIN) 018 PAPER / ANSWER KEY / CatalyseR Eduventures (India) Pvt. Ltd. 13
14 JEE (MAIN) 018 PAPER / ANSWER KEY / CatalyseR Eduventures (India) Pvt. Ltd. 14
CHEMISTRY. ion is : 62. Which of the following salts is the most basic in aqueous solution?
JEE MAIN-018 CHEMISTRY This section contains 0 multiple choice questions. Each question has choices, (), () and for its answer, out of which Only One is correct. 61. Total number of lone pair of electrons
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