Potassium Dichromate & Permanganate: JEE Questions & Solutions

On heating a mixture of common salt and K2Cr2O7 in equal amount along with concentrated H2SO4 in a test tube, a gas is evolved. Formula of…

Consider the following statements about manganate and permanganate ions. Identify the correct statements. A. The geometry of both manganate…

Consider the following reactions: K2Cr2O7 + 2 KOH heat [A] [A] + H2SO4 [B] + K2SO4 The products [A] and [B], respectively are:

Preparation of potassium permanganate from MnO2 involves two-step process in which the 1^ st step is a reaction with KOH and KNO3 to…

Consider the following reactions A + HCl + H2SO4 CrO2Cl2 + Side Products Little amount CrO2Cl2( vapour) + NaOH B + NaCl + H2O B + H^+ C +…

NaCl reacts with conc. H2SO4 and K2Cr2O7 to give reddish fumes (B), which react with NaOH to give yellow solution (C). (B) and (C)…

KMnO₄ decomposes on heating at 513 K to form O2 along with: (1) MnO₂ & K₂O₂ (2) K₂MnO₄ & Mn (3) Mn & KO₂ (4) K₂MnO₄ & MnO₂

A and B formed in the following reactions are: Cr2 O7^2- + 4 NaOH Na2 Cr2 O4 + 2 NaCl + 2 H2 O A + 2 Cl2 + 2 H2 O B + 3 H2 O

Identify correct statements from below: Choose the correct answer from the options given below: Statements: (A) A. The chromate ion is…

K2Cr2O7 paper acidified with dilute H2SO4 turns green when exposed to:

KMnO4 oxidises I^- in acidic and neutral/faintly alkaline solution, respectively to:

When Cu^2+ ion is treated with KI, a white precipitate, X appears in solution. The solution is titrated with sodium thiosulphate, the…

Element not present in Nessler’s reagent is: