The p-Block Elements questions
1863 published questions with worked solutions.
- Peroxy acids are
- H_2S does not produce a metallic sulfide with
- The number of S-S bonds in (molecular) sulphur trioxide is
- Passing SO_2 gas into an acidified solution of potassium dichromate turns the orange solution
- Ozone with KI solution produces
- The hydride of group 16 elements showing the maximum tendency for complex formation is
- Copper turnings when heated with concentrated sulphuric acid will give
- A person working with phosphorus suffers from a disease in which bones decay. It is known as
- There is no S-S bond in
- **Assertion:** Ozone is a powerful oxidising agent in comparison to O_2. **Reason:** Ozone is diamagnetic, but O_2 is...
- (NH_4)_2Cr_2O_7 on heating liberates a gas. The same gas will also be obtained by
- **Assertion:** PCl_5 and PbCl_4 are thermally unstable. **Reason:** They produce the same gas on thermal decomposition.
- **Assertion:** PCl_5 is covalent in the gaseous and liquid states but ionic in the solid state. **Reason:** PCl_5 in the solid...
- When molten sulphur is suddenly cooled by pouring it into water, it takes the form of
- Which is true with regard to the properties of PH_3?
- Pentavalence in phosphorus is more stable compared to that of nitrogen, even though they belong to the same group. This is due to
- Superphosphate of lime is
- The number of P-O-P bridges in the structures of phosphorus pentoxide and phosphorus trioxide, respectively, are
- One mole of calcium phosphide on reaction with excess water gives
- **Assertion:** Oxygen is more electronegative than sulphur, yet H_2S is acidic while H_2O is neutral. **Reason:** The H-S bond is...
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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