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Built around the concept in “Which gas is used in refrigeration?”, 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 CFC.
The concept tested here leads specifically to CFC. The alternatives Hydrogen, Oxygen and Nitrogen are legitimate scientific terms, but each belongs to a different function, property, material or context.
FAQ
Common questions and clear answers for this topic.
CFC. Used as refrigerant.
Use the defining property and mechanism from chemistry.
Hydrogen, Oxygen, Nitrogen belong to different functions, properties or contexts.
Connect “Which gas is used in refrigeration?” with CFC 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.
