Alcohols, Phenols & Ethers · JEE Main previous year questions

2019 2 questions

1. Q892019 · 10 Apr 2019 · Shift 1

   The synonym for water gas when used in the production of methanol is :

   1. A.fuel gas
   2. B.laughing gas
   3. C.syn gas
   4. D.natural gas
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   Answer: C

2. Q612019 · 12 Jan 2019 · Shift 1

   In the following reaction : $\text{Aldehyde}+\text{Alcohol}\stackrel{HCl}{\to }\text{Acetal}$ | Aldehyde | Alcohol | | :--- | :--- | | $\mathrm{HCHO}$ | ${}^t\mathrm{BuOH}$ | | $\mathrm{C}{\mathrm{H}}_3\mathrm{CHO}$ | $\mathrm{MeOH}$ | The best combination is

   1. A.$\mathrm{C}{\mathrm{H}}_3\mathrm{CHO}$ and $\mathrm{MeOH}$
   2. B.$\mathrm{HCHO}$ and $\mathrm{MeOH}$
   3. C.$\mathrm{C}{\mathrm{H}}_3\mathrm{CHO}$ and $t\mathrm{BuOH}$
   4. D.$\mathrm{HCHO}$ and $t\mathrm{BuOH}$
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   Answer: B