Offline paper
Chemistry · 2017
JEE Main 2017 · 2017-04-02 Offline · Q48
Sodium salt of an organic acid ' X ' produces effervescence with conc. H_2 SO_4. 'X' reacts with the acidified aqueous CaCl_2 solution to give a…
Sodium salt of an organic acid ' $\displaystyle X$ ' produces effervescence with conc. $\displaystyle \mathrm{H}_2 \mathrm{SO}_4$. 'X' reacts with the acidified aqueous $\displaystyle \mathrm{CaCl}_2$ solution to give a white precipitate which decolourises acidic solution of $\displaystyle \mathrm{KMnO}_4$. ' X ' is :
Official answer
(2)
$\displaystyle \mathrm{Na}_2 \mathrm{C}_2 \mathrm{O}_4$
More from Qualitative Salt Analysis
- Consider the following test for a group-IV cation. M^2++H_2 S → A( Black precipitate )+ byproduct; A+ aqua regia → B+NOCl+S+H_2 O; B+KNO_2+CH_3 COOH…2024
- Molar mass of the salt from NaBr, NaNO_3, KI and CaF_2 which does not evolve coloured vapours on heating with concentrated H_2 SO_4 is ____ g mol^-1.…2024
- Match List I with List II Choose the correct answer from the options given below:2024
- Consider the following reactions Na_2 B_4 O_7 →Δ 2 X+Y; CuSO_4+Y → Non-Luminous flame Z+SO_3; 2 Z+2 X+ Carbon → Luminous flame 2 Q+Na_2 B_4 O_7+CO…2026
- In the precipitation of the iron group (III) in qualitative analysis, ammonium chloride is added before adding ammonium hydroxide to:2024
- Formulae for Nessler's reagent is:2023
- When a salt is treated with sodium hydroxide solution it gives gas X. On passing gas X through reagent Y a brown coloured precipitate is formed. X…2025
- During the qualitative analysis of SO_3^2- using dilute H_2 SO_4, SO_2 gas is evolved which turns K_2 Cr_2 O_7 solution (acidified with dilute H_2…2023
JEE Main 2017 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.