General Knowledge
MediumQ. No. which-gas-is-used-in-refrigeration
Which gas is used in refrigeration?
Last Updated:
ACFC
BOxygen
CNitrogen
DHydrogen
Correct Answer: CFCYour Answer: A
Last Updated:
Used as refrigerant.
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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.
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Human blood consists of: Red Blood Cells (RBCs) that carry oxygen using hemoglobin, White Blood Cells (WBCs) that fight infections, Platelets that help in blood clotting, and Plasma (liquid component, about 55% of blood) that carries nutrients, hormones, and waste products. Normal blood pH is 7.35-7.45.
Photosynthesis is the process by which green plants use sunlight, water, and carbon dioxide to produce glucose and oxygen. The chemical equation is: 6CO2 + 6H2O + Light Energy gives C6H12O6 + 6O2. Chlorophyll in leaves absorbs sunlight. Photosynthesis occurs in two stages: Light reactions (in thylakoids) and Dark reactions/Calvin cycle (in stroma).
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