The p-Block Elements questions
1863 published questions with worked solutions.
- **Assertion:** All the noble gases have an ns^2np^6 electronic configuration in their outermost shell. **Reason:** In the noble...
- A greenish-yellow gas reacts with an alkali metal hydroxide to form a halate which can be used in fireworks and safety matches....
- Bleaching powder is a disinfectant used for water purification. After the water-borne germs are killed, its disinfectant activity...
- The bleaching action of chlorine is permanent, whereas that of SO_2 is temporary, because
- Which one of the following pairs of substances, when mixed, produces chlorine gas at room temperature?
- HClO_4+P_2O_5 (A) and (B). A and B are
- XeO_2F_2 is obtained by partial hydrolysis of
- The least stable anion among the oxoacid anions of chlorine is
- Which one below is a pseudohalide?
- **Assertion:** Helium is the only substance that cannot be solidified at atmospheric pressure. **Reason:** The zero-point energy...
- Electrons left in the valence shell when Xe is converted to XeF_6 is ......
- XeF_4 disproportionates in aqueous solution to Xe(0) and Xe(VI). Xe(VI) is formed from Xe in which initial oxidation state in...
- Maximum acidic character is shown by the oxoacids of halogens with oxidation number of the halogen as ........
- How many S–S bonds are there in S_3O_9?
- There are equal numbers of sulphur atoms in thiosulphuric acid, Marshall's acid and oleum. This number is ......
- There are a total of ........ -bonds in XeO_3.
- How many of the following have peroxo linkages: H_2S_2O_3, H_2S_2O_8, H_2SO_5, CrO_5, BaO_2, K_2O_2?
- Maximum oxidation state shown by sulphur in its compounds is .....
- How many S-O-S angles are there in S_3O_9?
- One mole of SO_2Cl_2 on hydrolysis gives acids which can be neutralised by ..... moles of NaOH.
Other chapters
Alcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAlternating CurrentAminesAnatomy of Flowering PlantsAncient Indian HistoryAnimal KingdomApplication of DerivativesArea Under CurveAromatic Compounds and Aryl HalidesAtomsBasic Mathematics and LogarithmBinomial TheoremBiodiversity and ConservationBiological ClassificationBiomoleculesBiotechnology and Its ApplicationsBiotechnology: Principles and ProcessesBody Fluids and CirculationBreathing and Exchange of GasesCell Cycle and Cell DivisionCell: The Unit of LifeChemical Bonding and Molecular StructureChemical Coordination and Integration