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IIT JEE (Advanced) 2020 : Paper 2 in Hindi (Solved with Answer Key)

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JEE (Advanced) 2020 Q.1 Paper 2 | (refractive index) 4 3 | | 12 cm , (schematic) | (line of sight) (along) | - , (symmetrically located) | (cm ) _______________________ | Q.2 | t o ( = 4 ) | - ; , (laminar) | | | - 7 = 2 2 | , ___________________ | JEE (Advanced) 2020 Q.3 Paper 2 (discs), 0.01 m , | , 900 kg m 3 , | (terminal velocity) , 200 V (on) | , 8 10 7 m | __________________ [ (buoyancy) , 10 ms 2 (e) = 1.6 10 19 C ] | JEE (Advanced) 2020 Q.4 Paper 2 | 1 kg , 480 kg | (buoyancy) | 100 m | , 150 m | ( ) = , = 1.25 kg m 3 o = 6000 m , ____________ | Q.5 - | | (dipole moment) - (point dipole) - , - | - , | - ( ) , , ________________________ | ( (coplanar force) | ) JEE (Advanced) 2020 Q.6 Paper 2 8 m | - (diathermic) ( ) ( 8.3 kg) ( ) | 4 m | 300 K 0.1 | , | (m ) ____________________ ( = 10 ms 2 = 8.3 J mol 1 K 1 )| JEE (Advanced) 2020 Q.7 Paper 2 , , , | (refractive index) 4 3 | (table) | | | ( ) ( ) ( , ) | ( ) (A) = 2 + 2 2 (B) = 3 2 2 (C) (D) 3 (1 2 3 (1 4 + + 1 2 ) 2 1 2 ) 4 | | JEE (Advanced) 2020 Q.8 Paper 2 ( ) 30o | / | / ( ) / | | ( ) 1 (A) 02 2 = 2 (B) 02 2 = 3 2 (C) (centripetal force) | (D) (centripetal force) | JEE (Advanced) 2020 Q.9 Paper 2 (rod), (pivoted) , | , , | | | , = | (A) = 3 2 +3 2 (C) = Q.10 3 (B) = 12 2 +12 2 (D) = 3 2 X (X ray tube) ( ), (filament current) , | ( ) | | ( ) ( ) | , ( ) (continuous) (characteristic) X | , 2 2 2 (A) ( ) , | (B) , | (C) , | (D) , | JEE (Advanced) 2020 Q.11 Paper 2 (identical) (non-conducting) , , (common) (strings) | | | (dielectric) | 800 kg m 3 21 | , (A) | (B) | (C) 840 kg 3 | (D) | Q.12 = 0 1 ms 1 - | = | | (A) = 1 ms 2 - = 1 ms 2 | (B) = 0 = 1 ms 2 | (C) = 0 ( ) | (D) = 0 = 1 45o | 2 2 JEE (Advanced) 2020 Q.13 Paper 2 | 0 | (radial) (adiabatic) (compress) , ( ) | (4 0 2 ) | = Q.14 = 41 30 | __________________ (Wheatstone bridge) o 1 | 3 ( ) 0.0004 C | 3 o 100 C , _______________ | Q.15 (capacitors), 1 = 2000 10 pF 2 = 3000 15 pF , (series) | = 5.00 0.02 V | _____________ | JEE (Advanced) 2020 Q.16 Paper 2 [ (bulk modulus) = = 70 GPa] (edge length) 1 m | 5 km | 103 kg m 3 10 ms 2 (mm ) ______________________ | Q.17 , (circuits) (inductors) | - (self-inductance), , - (mutual inductances) (applied voltages) | (on) (steady state) , - _________________ mJ | Q.18 1 kg , (surroundings) | - 700 Wm 2 , 0.05 m2 | - | , _______________________ [ , = 0.001 s 1, (heat capacity) = 4200 J kg 1 K 1 ]| END OF THE QUESTION PAPER JEE (Advanced) 2020 Q.1 Paper 2 ( 1 ), ( 2 ), ( 3 ) (ionization enthalpy) | (atomic number) , + 1, + 2, + 3 , < 10 | ) ? Atomic number +1 +2 +3 Q.2 Ionization Enthalpy (kJ/mol) 1 1681 2081 496 738 2 3374 3952 4562 1451 3 6050 6122 6910 7733 : O2, HF, H2O, NH3, H2O2, CCl4, CHCl3, C6H6, C6H5Cl. (charged comb) , ? Q.3 , KMnO4 KI (stoichiometric) | 4 KMnO4 , I2 ? Q.4 (potassium chromate) (amyl alcohol) | 1 mL 3% H2 O2 | (VI) X | X ? 1/7 JEE (Advanced) 2020 Q.5 Paper 2 | (absolute value), pH = 2, pH = 6, pH = 11 | 1 |, | 2 | | 3 | , | 1 | + | 2 | + | 3 | ? Q.6 (C8 H10 O2) (plane-polarized light) | FeCl3 | (isomers) ? 2/7 JEE (Advanced) 2020 Q.7 Paper 2 I X ( / / ) m gram | , , X , X ( II) ( III) | ( ) | ( Magnetic field absent: ; Magnetic field present: ; magnet: ; Balanced: ; Upward deflection: ; Downward deflection: ) (A) = H2 O( ) , | (B) = K 4 [Fe(CN)6 ]( ) , | (C) = O2 ( ) , | (D) = C6 H6 ( ) , | 3/7 JEE (Advanced) 2020 Q.8 Q.9 Paper 2 ( ) | (P [P]0 , initial rate = , time = ) (A) (B) (C) (D) (extraction) ( ) | (A) (sodium aluminate) CO2 (bubbled) , (hydrated) Al2 O3 | (B) Na3 AlF6 (alumina) | (C) CO2 | (D) | Q.10 ( ) | (A) SnCl2 . 2H2 O (reducing agent) | (B) SnO2 , KOH , K 2 [Sn(OH)6 ] | (C) PbCl2 HCl Pb2+ Cl | (D) Pb3 O4 , PbO2 , | 4/7 JEE (Advanced) 2020 Q.11 Paper 2 I, II, III, IV ( ) | (A) II > I > III > IV I (B) I II p , III IV p | (C) III (resonance effect) IV | (D) (steric effect) IV III | Q.12 P | (Optically active: ; reagent: ; Optically active acid: ) ( ), (A) P (B) X Pd-C/quinoline/H2 (C) P (D) R 5/7 JEE (Advanced) 2020 Q.13 Paper 2 0.1 M (B) 0.1 M (HA) | HA pH (Volume of HA: HA ) | p ? , B + HA BH + + A . Q.14 25 oC , | , 0.25 0.50 , (vapor pressure) 0.3 0.4 bar | (bar ) ? 6/7 JEE (Advanced) 2020 Paper 2 Q.15 , H2 (electronic ground state) (internuclear distance), , (potential energy) | - - = 0 , 0 1 ( ) (kJ mol ) ? H | ( : (Avogadro constant ) = 6.023 1023 mol 1) Q.16 P Q | P Q (overall yield) 75% | 9.3 mL P Q gram ? [ : P = 1.00 g mL 1; C, H, O N (molar mass) 12.0, 1 1.0, 16.0 14.0 g mol ] Q.17 (cassiterite) (coke) | , (K ), , ? 298 K: 0 (SnO2 ( )) = 581.0 kJ mol 1 , 0(CO2(g)) = 394.0 kJ mol 1, 0 (SnO2(s)) = 56.0 J K 1 mol 1, 0 (Sn(s)) = 52.0 J K 1 mol 1, 0 (C( )) = 6.0 J K 1 mol 1, 0 (CO2 (g)) = 210.0 J K 1 mol 1. | Q.18 0.05 M Zn2+ 0.1 M H2 S (saturate) | ZnS H + (M) ? 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