Chemistry (Mixed)

This option is correct because during the reaction of hydrocarbon and oxides of N₂ in presence of ultraviolet light, O₃, PAN and aldehydes all are produced.

This option is correct, because this ore, CuFeS₂ has iron and copper both.

This option is correct because both XeO₂F₂, XeO₃F₂ have the same trigonal bipyramidal structure.

This option is correct,  because Stock and Pohland (1921) prepared borazine by the reaction of diborane and ammonia at -120 ˚C. In this reaction diammoniate of diborane is formed, which on decomposition at 200 ˚C gives borazine

I₃^- ion has three lone pair of electron because I^- atom containing eight electrons instead of seven, two electron are shared with two I^-atom and remaining three lone pairs are left.

This option is correct, because two Re atoms have eight electrons will occupy one sigma. Two pi and one delta bonding to form quadruple bonds between two Re atoms, i.e., Re-Re distance short to exist eclipsed form.

This option is correct,  because the B₄H₁₀ is having one B-B electron pair, four B-H-B bridge bonds and two BH2 groups. On the bases of its facts this styx code match with B4H10. (hints Styx.i.e.S=No of B-H-B bonds. T=No of B-B-B bonds. Y=No of B-B bonds X=No of BH₂ groups.

This option is correct because the froth soap lather, cod liver oil and clouds belong to set of foam, emulsion and aerosol.

This option is correct because in this carbonyl compound, total electron counts to be 62,  and electron used for non skeletal bonding is 48. Therefore skeletal electron pair available for frame work bonding 1/2[62 - 48]=7e pairs, i.e., m = 4,  hence occupies (4+3)e pairs,  predicted in (m+4) rule.

Anti-knocking agents are those compounds, which on adding gasoline in a very small quantity reduce knocking. TEL (C₂H₅)₄Pb is added the extent of only 0.01% in gasoline as antiknocking compound.

This option is correct,  because the two excess electron of metal ions shifted towards antibonding MOs of CO ligand resulting CO bond order is very low, due to this fact infrared frequency highly decreases.

This option is correct, because the central metal ions of both the compounds have same (five) unpaired electron in their d-orbitals, on basis of this fact both compounds show the same magnetic moment.

This option is correct,  because the N₃^-, XeF₂ is show the linear structure but ICl₄^- , PtCl₄^-- is show the both square planar structure. 

This option is correct,   the speier catalyst is generated from chloroplatinic acid. It is used in hydrosilyation,  i.e.,  called catalytic hydrosilylation.

This option is correct,  because the shift reagent [tris-(dipivalomethanato)europium] are ion in a rare earth coordinate to organic ligand such as beta-ketone of Eu⁺³. These are synthesized more recent shift reagent.