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Built around the concept in “What is the chemical formula of washing soda?”, this bilingual General Science item checks whether a learner can connect a scientific term with its exact property, mechanism or function. The verified answer is Na2CO3·10H2O.
The defining scientific property identifies Na2CO3·10H2O. Washing soda is sodium carbonate decahydrate. Chemical identity depends on composition, characteristic properties and reaction behaviour. A common name, formula, acid-base character or periodic position provides a stronger basis than superficial similarity between substances. The alternatives NaHCO3, CaCO3 and NaOH are legitimate scientific terms, but each belongs to a different function, property, material or context.
FAQ
Common questions and clear answers for this topic.
Na2CO3·10H2O. Washing soda is sodium carbonate decahydrate.
Use the defining property and mechanism from chemistry.
NaHCO3, CaCO3, NaOH belong to different functions, properties or contexts.
Connect “What is the chemical formula of washing soda?” with Na2CO3·10H2O and the supporting mechanism.
General Science covers basic concepts in Physics, Chemistry, Biology, and Earth Science. It is an important section in competitive exams like SSC CGL, UPSC Prelims, Railway NTPC, and Defence exams. Questions include scientific laws, inventions, human body systems, chemical reactions, and everyday science phenomena. NCERT Science books from Class 6 to 10 are recommended.
Newton's Three Laws of Motion: 1) First Law (Law of Inertia) - An object remains at rest or in uniform motion unless acted upon by an external force. 2) Second Law - Force equals mass times acceleration (F=ma). 3) Third Law - For every action there is an equal and opposite reaction. These laws are fundamental to Physics and frequently asked in SSC CGL, Railway, and NDA exams.
