The p-Block Elements questions
1863 published questions with worked solutions.
- There is very little difference in acid strength among the oxoacids of phosphorus (H_3PO_2, H_3PO_3, H_3PO_4) because:
- The gas which does not show oxidising and bleaching properties is:
- Reactivity of NO is due to:
- Superphosphate of lime is used in:
- Phosphine reacts with copper sulphate solution to form:
- When HNO_3 reacts with metals, nitrogen dioxide is usually evolved if the acid is:
- NCl_3 on hydrolysis yields:
- When phosphine is bubbled through a solution of silver nitrate, ..... is precipitated.
- Concentrated nitric acid reacts with iodine to give:
- The group 15 (VA) elements are commonly known as:
- In the modern process, phosphorus is manufactured by:
- Calcium phosphide is used in smoke screens because it:
- Which of the following occurs in the free state (in nature)?
- Nitrogen can be purified from the impurities of oxides of nitrogen and ammonia by passing through:
- Which is not correct for white phosphorus (P_4)?
- Nitrous acid reacts with (conc.) H_2SO_4 to give:
- Which forms strong p –p bonds?
- In pyrophosphoric acid, the number of hydroxy groups present is:
- The hydrolysis of PCl_3 produces:
- An example of a tetrabasic acid is:
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