Sr. # | Questions | Answers Choice |
---|---|---|
1 | Which oxide is more basic in nature. | Beo MgO CaO BaO |
2 | Which property of hydrogen not resemble to alkali metals. | Electronic configuration Oxidation state Reaction with halogen Metallic nature |
3 | The oxides of metal sare generally | Acidic Basic Neutral Amphoteric |
4 | Which one of the following oxides is amphoteric in nature. | MgO Na2O SO2 ZnO |
5 | Which one of the following elements burns in air to form an oxide which, when shaken with water, give a solution with a pH greater than 7. | Carbon Magnesium sulphur Hydrogen |
6 | Which one of the following elements burns in air to form an oxide which, when shaken with water, give a solution with a pH greater than 7. | Carbon Magnesium sulphur Hydrogen |
7 | Which one of the following elements burns in air to form an oxide which, when shaken with water, give sa solution with a pH greater than 7. | Carbon Magnesium sulphur Hydrogen |
8 | Element of which group reacts with hydrogen and form ionic hydrides. | II A IV A V A VI A |
9 | Which hydride is intermediate in nature. |
NaH BeH2 NH3 HCl |
10 | Ionic Hydrides react with water to form | Proton Hydride ions Hydroxide ions Hydronium ions |
11 | Which element when react with chlorine form polymeric halide. | Na Be Ba P |
12 | Which has greater hydration energy. | Li+ Na+ K+ Mg+2 |
13 | In which compound, oxidation state of sulphur is +6 | H2S H2SO4 H2SO3 SO3 |
14 | In which group, melting point and boiling point increase downward in a group | IA II A VII A Both a and b |
15 | Variable valency is generally exhibited by | Transition elements Alkali metals s-block elements Gaseous elements |
16 | Across a period from left to right in the periodic table, the melting and boiling point. | Decrease Increase Remain constant First increase upto the middle of period and then decrease |
17 | The first ionization energy of Na, Mg, Al and Si are in theorder of. | Na < Mg < Al < Si Na > Mg> Al> Si Na > Mg< Al< Si Na< Mg> Al< Si |