The p-Block Elements questions
1863 published questions with worked solutions.
- XeF_6 reacts with quartz forming XeOF_4: 2XeF_6+xSiO_2 2XeOF_4+xSiF_4. What is the value of x?
- Out of F, Cl, Br, I, Xe, Ne, O, how many form compounds with a positive oxidation state?
- Fuming nitric acid is:
- Ammonia and phosphine resemble each other in:
- Rain water sometimes contains NH_4NO_3 because lightning in the sky causes the air to react and produce oxides of nitrogen and:
- Which form of phosphorus shows chemiluminescence?
- The number of molecules of water needed to convert one molecule of P_2O_5 into orthophosphoric acid is:
- Which of the following statements is NOT valid for oxoacids of phosphorus?
- Conc. HNO_3 reacts with iron to:
- Nitric oxide is prepared by the action of cold dilute HNO_3 on:
- A bottle of PCl_5 is kept stoppered because it:
- Nitric acid may be kept in a bottle of:
- When heated to 800°C, N_2O gives:
- In smoke screens, calcium phosphide is used because it:
- Red phosphorus is chemically unreactive because:
- Passing H_2S gas through nitric acid produces:
- Phosphine is not collected over water because:
- Ammonia is generally manufactured for fertilisers by the reaction:
- Which element reacts with chlorine to give a pentachloride?
- The non-metallic element whose molecules contain the maximum number of its own atoms 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