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Solution jee advanced 2019 paper 2

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JEE ADVANCED 2019 SOLUTIONS OF PAPER 2 WATCH VIDEO SOLUTIONS ON DOUBTNUT APP Download Doubtnut Now Q-1 - 12756538 With reference to aqua regia, choose the correct option(s) (A) Aqua regia is prepared by mixing conc. HCl and conc. HNO 3 in 3:1 molar ratio (B) Rection of gold with aqua regia product an anion having Au in + 3 oxidation state. (B) Reaction of gold with aquaregia produces NO 2 in the absence of air (B) The yellow colour of aqua regia is due to the presence of NOCl & Cl 2 (CORRECT ANSWER) A::B::D SOLUTION: [ ] (B) Au + 4H + + NO 3- + 4Cl - → AuCl 4 Θ + NO + 2H 2O (A) fact [ ] (B). AuCl 4 - gets formed Au( + 3) (C). NOCl/NO is formed (D). Fact. WATCH VIDEO SOLUTION ON DOUBTNUT Q-2 - 12756539 Choose the correct option that gives aromatic compound as major product: (A) (B) (B) (B) (CORRECT ANSWER) A::B SOLUTION: (B) WATCH VIDEO SOLUTION ON DOUBTNUT Q-3 - 12756540 Which of the following reaction produce propane as major product? (A) (B) (B) (B) (CORRECT ANSWER) SOLUTION: (B) WATCH VIDEO SOLUTION ON DOUBTNUT Q-4 - 12756541 Which of the following is/are correct? (A) Teflon is fomred by polymerization of tetrafluoroethene. (B) Natural rubber is the trans from of polyisoprene. (B) Cellulose contains only α-D-glucose linkage (B) Nylon-6 contains amide linkage. (CORRECT ANSWER) A::D SOLUTION: (B) N/A WATCH VIDEO SOLUTION ON DOUBTNUT Q-5 - 12756542 (A) (B) (B) (B) (CORRECT ANSWER) A::B SOLUTION: (B) WATCH VIDEO SOLUTION ON DOUBTN ...
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