701 Which of the following possesses maximum hydration energy ? Chemistry Medium Full question → A Na+ B K+ C Mg+2 D Ca+2
702 Melting points of VII-A group elements down the group ____________________? Chemistry Medium Full question → A Increase B Decrease C Remain constant D No regular trend
703 Higher value of electron affinity means__________________? Chemistry Medium Full question → A Atom will lose electron easily B Atom will gain electron easily C Atom may form di-positive ion D The reason is unknown
704 Shielding effect across the period_________________? Chemistry Medium Full question → A Increases B Decreases C Can not be predicted D Remains constant
705 The atoms of same element having same atomic number but different mass number are called____________________? Chemistry Medium Full question → A Isobars B Isomers C Isotopes D Isotropes
706 Which of the following ion is stable in aqueous solution ? Chemistry Medium Full question → A H+ B H- C Cl- D All are stable
707 An element has electronic conviguration 1s2 2s2 2p2. It belongs to__________________? Chemistry Medium Full question → A Group II-A B Group IV-A C Group VII-A D Group VI-A
708 The atomic radii decreases by increasing atomic number in________________? Chemistry Medium Full question → A Alkali metal B Alkaline earth metal C Elements from Li to Ne D Halogens
709 Many properties of an element and its compounds can be predicted from the position of the element in the periodic table. What property could not be predicted in this way ? Chemistry Medium Full question → A The nature of its oxides B The charge on its ions C The formula of its oxide D Its number of isotopes
710 Which one of the following sets consists of all coinage metals ? Chemistry Medium Full question → A Cu Hg Au B Cu Ag Au C Ag Au Hg D Cu Fe Au
711 Best position of hydrogen in the periodic table is above I.A Group which is mainly due to_______________? Chemistry Medium Full question → A Both are electropositive B Similar outer most shell electronic configuration C Both form ionic compounds D All
712 Non-metals usually form _________________ oxides? Chemistry Medium Full question → A Acidic B Amphoteric C Neutral D All of the above
713 Inner transition elements are called _________________? Chemistry Medium Full question → A Lanthanides B Actinides C Rare earth metals D All
714 In modern periodic table all the leements are arranged in ascending order of__________________? Chemistry Medium Full question → A Valency B Atomic mass C Atomic number D Valence electrons
715 Elements with similar chemical properties appear in the_________________? Chemistry Medium Full question → A Same family B Same period C p block elements D Right upper corner
716 Concept of Triads was introduced by_______________? Chemistry Medium Full question → A Dobereiner B Newland C Mendeleev D Al-Razi
717 Periodic table provides a basic framework to study elements with respect to their__________________? Chemistry Medium Full question → A Physical properties B Chemical properties C Properties of their compounds D All
718 Which of the following will not form crystalline structure with opporitely charged ions_________________? Chemistry Medium Full question → A H+ B H- C Mg2+ D Ca2+
719 Which of the p-block elements are not representative elements ? Chemistry Medium Full question → A Alkali metals (I-A) B Group-14 elements (IV-A) C Group-18 elements (VIII-A) D Halogens (VII-A)
720 Elements in the same vertical group of the periodic table have same_______________? Chemistry Medium Full question → A Number of valence electrons B Atomic number C Atomic mass D Atomic volume