341 Wavelength of electron was verified by_________________? Chemistry Medium Full question → A Moseley B Davisson and Germer C Einstein D Roentgen
342 Sommerfelds modification in Bohrs model is_______________? Chemistry Medium Full question → A Orbit is cylindrical B Orbit is elliptical C Orbit is longitudinal D Orbit is asymmetrical
343 Pfund series are produced in the spectrum of hydrogen atom__________________? Chemistry Medium Full question → A when electrons jump down to 2nd- orbit B when electrons jump down to 3rd- orbit C when electrons jump down to 4th- orbit D when electrons jump down to 5th- orbit
344 The maximum number of orbitals present in a subshell that is represented by Azimuthal quantum number = 3 will be________________? Chemistry Medium Full question → A 1 B 3 C 5 D 7
345 Rutherford bombarded _________________ particles in discovery of nucleus? Chemistry Medium Full question → A Gamma-rays B Alpha-rays C Beta-rays D X-rays
346 Charge of electron was measured by__________________? Chemistry Medium Full question → A J.J Thomson B Millikan C Rutherford D Perrin
347 Free neutron changes into proton with the emission of__________________? Chemistry Medium Full question → A Neutrino B Electron C Both A & B D Meson
348 According to VESPR Model the geometry of molecule having 5 bond pair in outer most shell will be __________________? Chemistry Medium Full question → A Triangular B Square planner C Trigonal bipyramidal D Octahedral
349 Geometry of molecule will be pyramidal if the outer post shell of the central atom has___________________? Chemistry Medium Full question → A 3 bond pair one lone pair B 2 bond pair 2 lone pair C 1 bond pair 3 lone pair D 3 lone pair 1 bond pair
350 Orbitals of same energy produced after mixing of orbitals of different energy are called __________________? Chemistry Medium Full question → A Degenerate orbitals B Generate orbitals C Hybrid orbitals D Zeeman orbitals
351 Sharing of 1 electron pair by one specie forms_________________? Chemistry Medium Full question → A Single covalent bond B Hydrogen bond C Double covalent bond D Coordinate covalent bond
352 Which one of the following has polar covalent bond ? Chemistry Medium Full question → A HF B CH4 C H2 D N2
353 Bond will beionic when E.N difference of bonded atom is ____________________? Chemistry Medium Full question → A Equal to 1.7 B Greater than 1.7 C Less than 1.7 D No specificity exists
354 Ionic bond is produced after complete transfer of ________________ ? Chemistry Medium Full question → A Nucleus B Neutrons C Electrons D Protons
355 In a period electronegativity from left to right_________________? Chemistry Medium Full question → A Increases B Decreases C Remain constant D Variable trend
356 Elements having high I.P values are____________________? Chemistry Medium Full question → A Metals B Non metals C Liquids D Solids
357 Ionization energy in a period generally ___________________? Chemistry Medium Full question → A Increases B Decreases C No change D Variable trend
358 In a group ionic radius ? Chemistry Medium Full question → A Increases B Decreases C No change D Variable trend
359 An atom loses or gains electrons to__________________? Chemistry Medium Full question → A Gain stability B Form a bond C Complete its outermost shell D all are accurate justifications
360 Which of the following have their outer most shell complete in atomic form ? Chemistry Medium Full question → A Noble gases B Alkali metals C Coinage metals D Gun metals