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No verified paper has been uploaded for PPSC-PMS Paper Chemistry 2005 MCQs yet. The MCQs below are drawn from the Chemistry subject category.
Sodium carbonate (Na2CO3) reacts with barium chloride (BaCl2) to form a white precipitate of barium carbonate, whereas the other options do not produce a similar reaction.
Sulphur dioxide reacts with chlorine in the presence of sunlight to form sulphuryl chloride. This reaction involves the formation of a new compound by the reaction of two other compounds.
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Blue vitriol is the traditional name for copper(II) sulfate pentahydrate (CuSO4·5H2O). It is a bright blue crystalline solid that is commonly used in agriculture as a fungicide, in electroplating, and as a laboratory reagent for various chemical tests.
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In wrought iron production, impurities like Mg, Si, and P are removed as slag, which is a compound that is formed when these impurities react with the flux used in the process, typically limestone or dolomite.
Compounds that are attracted to a strong magnetic field are referred to as paramagnetic. This occurs when the internal magnetic dipoles of the atoms in the compound align with the applied magnetic field, resulting in a net magnetic attraction.
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Manual review recommended: automated enrichment was incomplete for this item. The original answer and options were preserved. No Gemini key is configured. Add GEMINI_API_KEY to the local server environment or save a Gemini provider key in Settings.
IUPAC nomenclature is a standardized system for naming chemical compounds. Pyridines are classified under the Azine category, which is a heterocyclic amine with a six-membered ring containing nitrogen.
