which of the following statement is/ are correct? A.ClO2 and ClO3 are odd electronic para magnetic species B. when KClO3 is heated with conc. HCl gives mixture of gases liberated is called euchlorine C.BrF5 on hydrolysis gives HF and HBrO3 D.F2 oxidizes HSO4- to S2O72-

Which of the following statement (s) is (are) correct when a mixture of NaCl and K_(2)Cr_(2)O_(7) is gently warmed with conc. H_(2)SO_(4) ?

Which of the following statement is/are correct 1.0 g mixture of CaCO 3 ​ (s) and glass beads liberate 0.22 g of CO 2 ​ upon treatment with excess of HCl. Glass does not react with HCl.

Which of the following are green house gases ? (a) CO_2 (b) O_2 (c) O_3 (d) CFC (e) H_2O

Which of the following statements about the reaction is // are correct? HgS+HCl+HNO_(3)rarrH_(2)HgCl_(4)+NO+S+H_(2)O

Complete the following reaction : (a) CH3CH2COCl + N3H gives (B). (B) on heating forms (C), which on hydrolysis gives (D)

Which of the following statements (s) is (are) correct with reference to the ferrous and ferric ions? (a). Fe^(2+) gives brown colour with potassium ferricyanide. (b). Fe^(2+) gives blue precipitate with potassium ferricyanide. (c). Fe^(3+) gives red colour with potassium thiocyanate. (d). Fe^(3+) gives brown colour with potassium thiocyanate.

Which of the following is correct ? Aqueous solution of Na_2S_2O_3 on reaction with Cl_2 gives ? (a) Na_2S_4O_6 (b) NaHSO_4 (c) NaCl (d) NaOH

Select the correct options for the following statements. 1. Cl_(2)O and ClO_(2) are used as bleaching agents. 2. OC l^(-) salts are used as detergent. . 3. OC l^(-) disproportionates in alkaline medium. 4. BrO_(3)^(-) is oxidized in acidic medium.

A non-metal A which is the largest constituent of air, when heated with H2 in 1 : 3 ratio in the presence of catalyst (Fe) gives a gas B. 0n heating with O_(2) it gives an oxide C. If this oxide is passed into water in the presence of air, it gives an acid D which acts as a strong oxidising agent. (a) Identify A, B, C and D. (b) To which group of the periodic table does this non-metal belongs?

Which statement among the following are correct ? I. Ce^(+3) is an oxidizing agent & colourless. II. Lu^(3+) is colourless. III. Actinoids exhibit a higher number of oxidation states than lanthanoid IV. All 3d elements give H_(2) with 1 M HCl