General Science Questions and Answers – Page 3

The concept tested here leads specifically to MKS System. MKS system uses metre, kilogram and second as fundamental units. Physics requires attention to the measured quantity, governing principle and unit. In “Which system of units uses metre, kilogram and second as fundamental units?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives British System, CGS System and FPS System are legitimate scientific terms, but each belongs to a different function, property, material or context. A useful verification is to state the definition in one sentence and ask whether the selected option satisfies every part of it. If the topic involves the human body, check organ and function; in chemistry, check composition and reaction; in physics, check quantity and unit; and in environmental science, check layer and process. For revision, connect the stem with MKS System and with the explanatory fact above. This builds reliable recall for SSC, Railway, State exams and other General Science tests while preserving conceptual understanding.

Option D, Nitrous oxide, matches the evidence in the stem. In “Which gas is used in anesthesia?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Hydrogen, CO2 and Oxygen are legitimate scientific terms, but each belongs to a different function, property, material or context. For revision, connect the stem with Nitrous oxide and with the explanatory fact above.

In “Which blood group is universal recipient?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word.

Rectifier is the scientifically supported answer. Converts AC to DC. In “Which device converts AC to DC?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Transformer, Generator and Motor are legitimate scientific terms, but each belongs to a different function, property, material or context. For revision, connect the stem with Rectifier and with the explanatory fact above.

The concept tested here leads specifically to Vitamin D. Biological questions are best solved by connecting a structure or nutrient with its physiological role, location and consequence of deficiency or malfunction. In “Which vitamin deficiency causes rickets?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Vitamin A, Vitamin B and Vitamin C are legitimate scientific terms, but each belongs to a different function, property, material or context. For revision, connect the stem with Vitamin D and with the explanatory fact above.

Option C, Sodium, matches the evidence in the stem. In “Which metal reacts with water violently?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Iron, Gold and Copper are legitimate scientific terms, but each belongs to a different function, property, material or context. For revision, connect the stem with Sodium and with the explanatory fact above.

The defining scientific property identifies Infrared. In “Which wave is used in remote control?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Gamma, UV and Radio wave are legitimate scientific terms, but each belongs to a different function, property, material or context. For revision, connect the stem with Infrared and with the explanatory fact above.

Liver is the scientifically supported answer. In “Which organ detoxifies chemicals?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Kidney, Heart and Lungs are legitimate scientific terms, but each belongs to a different function, property, material or context. If the topic involves the human body, check organ and function; in chemistry, check composition and reaction; in physics, check quantity and unit; and in environmental science, check layer and process. For revision, connect the stem with Liver and with the explanatory fact above.

The concept tested here leads specifically to CFC. In “Which gas is used in refrigeration?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Hydrogen, Oxygen and Nitrogen are legitimate scientific terms, but each belongs to a different function, property, material or context. For revision, connect the stem with CFC and with the explanatory fact above.

Option A, Neutron, matches the evidence in the stem. Neutron has no charge. In “Which particle has no charge?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Ion, Proton and Electron are legitimate scientific terms, but each belongs to a different function, property, material or context. For revision, connect the stem with Neutron and with the explanatory fact above.