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Friday, 9 October

JEE Main 2020 · ChemistryMultiple choiceOtherMediumMulti-step

JEE Main 2 September 2020, Shift 1, Chemistry Q45

Question 45 of 75 in this shift, Chemistry question 20 of 25.

Consider the following reactions : (i) Glucose + ROH →dry HCl\xrightarrow{\text{dry HCl}} Acetal →x eq. of (CH3CO)2O\xrightarrow{x\ \text{eq. of }(\mathrm{CH_3CO})_2\mathrm{O}} acetyl derivative (ii) Glucose →Ni/H2\xrightarrow{\mathrm{Ni/H_2}} A →y eq. of (CH3CO)2O\xrightarrow{y\ \text{eq. of }(\mathrm{CH_3CO})_2\mathrm{O}} acetyl derivative (iii) Glucose →z eq. of (CH3CO)2O\xrightarrow{z\ \text{eq. of }(\mathrm{CH_3CO})_2\mathrm{O}} acetyl derivative 'xx', 'yy' and 'zz' in these reactions are respectively.
  1. (1)4, 5 & 5
  2. (2)4, 6 & 5Official answer
  3. (3)5, 4 & 5
  4. (4)5, 6 & 5

Official answer

Option 2

NTA final key (Sep 2020).

Chapter
Biomolecules
Topic
Carbohydrates
Idea tested
Acetylation of Glucose

Same topic in other shifts

All Carbohydrates questions
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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.