Potassium Dichromate

JEE Main Chemistry · d- and f-Block Elements · 16 questions, latest first

• Correct statements from the following are A. Potassium dichromate is an oxidising agent and it oxidises FeSO_4 to Fe_2(SO_4)_3 in…20264 April, Shift 1 · Q61
• Which of the following sets includes all the species that will change the orange colour of K_2 Cr_2 O_7 in acidic medium?20262 April, Shift 1 · Q61
• The oxidation state of chromium in the final product formed in the reaction between KI and acidified K_2 Cr_2 O_7 solution is:202623 January, Shift 2 · Q60
• Consider the following reactions: NaCl+K_2 Cr_2 O_7+H_2 SO_4 → A+KHSO_4+NaHSO_4+H_2 O; A+NaOH → B+NaCl+H_2 O; B+H_2 SO_4+H_2 O_2…202621 January, Shift 1 · Q72
• Consider the following reactions A+ Little amount NaCl+H_2 SO_4 → CrO_2 Cl_2+ Side Products; CrO_2 Cl_2( Vapour )+NaOH →…20253 April, Shift 1 · Q73
• The molar mass of the water insoluble product formed from the fusion of chromite ore (FeCr_2 O_4) with Na_2 CO_3 in presence of…202529 January, Shift 1 · Q72
• Which of the following oxidation reactions are carried out by both K_2 Cr_2 O_7 and KMnO_4 in acidic medium? A. I^- → I_2 B. S^2-…202528 January, Shift 1 · Q60
• Consider the following reactions K_2 Cr_2 O_7 →[-H_2 O]KOH[ A] →[-H_2 O]H_2 SO_4[ B]+K_2 SO_4 The products [A] and [B],…202523 January, Shift 2 · Q61
• The equilibrium Cr_2 O_7^2- ⇌ 2 CrO_4^2- is shifted to the right in:20248 April, Shift 2 · Q68
• The fusion of chromite ore with sodium carbonate in the presence of air leads to the formation of products A and B along with the…20245 April, Shift 2 · Q86
• In acidic medium, K_2 Cr_2 O_7 shows oxidising action as represented in the half reaction: Cr_2 O_7^2-+XH^++Ye^ → 2 A+ZH_2 O X,…20241 February, Shift 1 · Q67
• Identify correct statements from below: A. The chromate ion is square planar. B. Dichromates are generally prepared from…202431 January, Shift 1 · Q68
• A and B formed in the following reactions are: CrO_2 Cl_2+4 NaOH → A+2 NaCl+2 H_2 O; A+2 HCl+2 H_2 O_2 → B+3 H_2 O,202430 January, Shift 2 · Q80
• Given below are two statements: Statement I: Aqueous solution of K_2 Cr_2 O_7 is preferred as a primary standard in volumetric…202310 April, Shift 1 · Q79
• A solution of C_r O_5 in amyl alcohol has a ____ colour.202329 January, Shift 2 · Q38
• Potassium dichromate acts as a strong oxidizing agent in acidic solution. During this process, the oxidation state changes from202325 January, Shift 2 · Q39