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Saturday, 31 October

JEE Main 2020 · ChemistryMultiple choiceSingle correctMediumCalculation

JEE Main 3 September 2020, Shift 2, Chemistry Q33

Question 33 of 75 in this shift, Chemistry question 8 of 25.

The strengths of 5.6 volume hydrogen peroxide (of density 1 g/mL) in terms of mass percentage and molarity (M), respectively, are : (Take molar mass of hydrogen peroxide as 34 g/mol)
  1. (1)1.7 and 0.25
  2. (2)0.85 and 0.5
  3. (3)0.85 and 0.25
  4. (4)1.7 and 0.5Official answer

Official answer

Option 4

NTA final key (Sep 2020).

Chapter
Hydrogen
Topic
Hydrogen and Hydrides
Idea tested
Volume Strength of H2O2

Same idea in other shifts

Asked 2× in all
  1. 3 Sep 2020, Shift 1 · Q49The volume strength of 8.9 M H2O2\mathrm{H_2O_2} solution calculated at 273 K and 1 atm is __________. (R =0.0821=0.0821 L atm…MediumNumerical value

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 108 of the 174 JEE Main shifts held from 2017 to 2026.