541 The compound or complex ion which has a ring in its structure__________________? Chemistry Medium Full question → A polydentate ligand B chelate C monodentate ligand D hydrate
542 Which of the following can form a chealate______________________? Chemistry Medium Full question → A ammine B oxalato C carbonyl D cyano
543 The specie which donates electrons to central metal atom in coordination sphere is called____________________? Chemistry Medium Full question → A anion B cation C Ligand is positively charged D acid
544 Non-stoichiometric compounds of transition elements are called___________________? Chemistry Medium Full question → A hydrates B hydrides C binary compounds D interstitial compounds
545 The oxidation state of transition elements is usually _______________________? Chemistry Medium Full question → A variable B constant C single D infinite
546 The correct electronic configuration of Cr is____________________? Chemistry Medium Full question → A [Ar]4s23d4 B [Ar] 4s23d4 C [Ar]4s03d5 D [Ar]4s13d5
547 Pure metal__________________? Chemistry Medium Full question → A corrode slowly B corrode rapidly C does not corrode easily D none of these
548 The melting points and boiling points upto meddle of 3d- series ____________________? Chemistry Medium Full question → A increases B decreases C remain same D no regular trend
549 The leements in which d or f orbitals are in the process of completion are__________________? Chemistry Medium Full question → A outer transition elements B inner transition elements C typical transition elements D transition elements
550 Group VIB of transition elements contains___________________? Chemistry Medium Full question → A Zn Cd Hg B Fe Ru Os C Cr Mo W D Mn Te Re
551 The oxidation number of central metal atom in [Ni(CO)4] is_________________? Chemistry Medium Full question → A 0 B 2 C 4 D 6
552 Coordination number of the transition element in [Pt Cl NO2 (NH3)4]2- is____________________? Chemistry Medium Full question → A 2 B 6 C 4 D 8
553 The reduction potential Zn is_________________? Chemistry Medium Full question → A 0.76 B -0.76 C -0.55 D 0.55
554 In K2Cr2O7 the oxidation number of chromium is____________________? Chemistry Medium Full question → A 7 B 6 C -7 D -6
555 Apparent charge on atom in molecule is___________________? Chemistry Medium Full question → A valency B coordination number C oxidation number D charge number
556 In alkaline battery the anode is made up of______________________? Chemistry Medium Full question → A MnO2 B Zn C AgO2 D cadmium
557 Density of H2SO4 in lead accumulator is__________________? Chemistry Medium Full question → A 1.25g/cm3 B 1.3g/cm3 C 1.20g/cm3 D 1.15g/cm3
558 Secondary cell is_____________________? Chemistry Medium Full question → A rechargeable B non rechargeable C electrolytic cell D Daniel cell
559 Greater value of standard reduction potential greater will be tendency__________________? Chemistry Medium Full question → A to get oxidized B to get reduced C to accept electrons D both B and C
560 The element that act as anode always have ______________ position in electrochemical cell? Chemistry Medium Full question → A higher B lower C in middle D no effect of position