Learn

Friday, 9 October

JEE Main 2017 · ChemistryMultiple choiceSingle correctMediumMulti-step

JEE Main 2 April 2017 (offline), Chemistry Q48

Question 48 of 90 in this shift, Chemistry question 18 of 30.

Sodium salt of an organic acid 'X' produces effervescence with conc. H2SO4\mathrm{H_2SO_4}. 'X' reacts with the acidified aqueous CaCl2\mathrm{CaCl_2} solution to give a white precipitate which decolourises acidic solution of KMnO4\mathrm{KMnO_4}. 'X' is :
  1. (1)CH3COONa\mathrm{CH_3COONa}
  2. (2)Na2C2O4\mathrm{Na_2C_2O_4}Official answer
  3. (3)C6H5COONa\mathrm{C_6H_5COONa}
  4. (4)HCOONa\mathrm{HCOONa}

Official answer

Option 2

CBSE answer key (25/04/2017, used for result).

Chapter
Aldehydes, Ketones and Carboxylic Acids
Topic
Anion Analysis
Idea tested
Oxalate Calcium Chloride Test

Same topic in other shifts

All Anion Analysis questions
  1. 5 Apr 2026, Shift 2 · Q70A paper dipped in a dil. H2SO4\mathrm{H_2SO_4} solution of 'X' upon treatment with SO2\mathrm{SO_2} gas turns into green. The compound 'X' is :EasySingle correct
  2. 2 Apr 2025, Shift 2 · Q62Formation of Na4[Fe(CN)5NOS]\mathrm{Na_4[Fe(CN)_5NOS]}, a purple coloured complex formed by addition of sodium nitroprusside in sodium carbonate…EasySingle correct
  3. 6 Apr 2024, Shift 2 · Q72During the detection of acidic radical present in a salt, a student gets a pale yellow precipitate soluble with difficulty in…EasySingle correct
  4. 8 Apr 2024, Shift 1 · Q73Match List I with List II LIST I (Compound): A. Fe4[Fe(CN)6]3⋅xH2O\mathrm{Fe_4[Fe(CN)_6]_3\cdot xH_2O}; B. [Fe(CN)5NOS]4−[\mathrm{Fe(CN)_5NOS}]^{4-}; C.…MediumMatch the list
  5. 29 Jan 2024, Shift 1 · Q79In chromyl chloride test for confirmation of Cl−\mathrm{Cl^-} ion, a yellow solution is obtained. Acidification of the solution and…MediumSingle correct
  6. 31 Jan 2024, Shift 1 · Q90Molar mass of the salt from NaBr\mathrm{NaBr}, NaNO3\mathrm{NaNO_3}, KI\mathrm{KI} and CaF2\mathrm{CaF_2} which does not evolve coloured vapours…EasyNumerical value

Question text from the official JEE Main paper published by NTA (CBSE ran the 2017 exam); 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.