Hydrocarbons · JEE Main previous year questions

2018 3 questions

1. Q722018 · 16 Apr 2018 · Shift 1

   Which of the following compounds will most readily be dehydrated to give alkene under acidic condition ?

   1. A.1- Pentanol
   2. B.4-Hydroxypentan - 2-one
   3. C.3-Hydroxypentan - 2-one
   4. D.2-Hydroxycyclopentanone
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   Answer: B

2. Q822018 · 16 Apr 2018 · Shift 1

   When 9.65 ampere current was passed for 1.0 hour into nitrobenzene in acidic medium, the amount of p-aminophenol produced is :

   1. A.9.81 g
   2. B.10.9 g
   3. C.98.1 g
   4. D.109.0 g
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   Answer: A

3. Q782018 · 8 Apr 2018 · Shift 1

   The trans-alkenes are formed by the reduction of alkynes with

   1. A.$\text{Sn}-\text{HCl}$
   2. B.${\text{H}}_2-\text{Pd/C},{\text{BaSO}}_4$
   3. C.${\text{NaBH}}_4$
   4. D.${\text{Na/liq. NH}}_3$
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   Answer: D