General Science Questions and Answers – Page 2

The defining scientific property identifies Force. Force depends on mass and acceleration, so it is derived. In “Which of the following is a derived quantity?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Mass, Time and Length 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 Force and with the explanatory fact above.

Density is the scientifically supported answer. Density is scalar while others are vector quantities. In “Identify the odd one out among the following quantities.”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Velocity, Momentum and Force 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. For revision, connect the stem with Density and with the explanatory fact above.

The concept tested here leads specifically to Acceleration. Acceleration possesses both magnitude and direction. In “Which of the following is a vector quantity?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Power, Energy and Temperature 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 Acceleration and with the explanatory fact above.

Option B, Work, matches the evidence in the stem. Work has magnitude only and no direction. In “Which physical quantity is scalar in nature?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Displacement, Velocity and Force 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 Work and with the explanatory fact above.

The defining scientific property identifies Radian and Steradian. Plane angle and solid angle are supplementary quantities with units radian and steradian. Physics requires attention to the measured quantity, governing principle and unit. In “Which pair correctly represents SI supplementary units?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Newton and Joule, Pascal and Watt and Volt and Ampere 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 Radian and Steradian and with the explanatory fact above. This builds reliable recall for SSC, Railway, State exams and other General Science tests while preserving conceptual understanding.

SI system contains seven fundamental quantities. In “How many fundamental quantities are there in SI system?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives 5, 6 and 8 are legitimate scientific terms, but each belongs to a different function, property, material or context. The question also illustrates a frequent competitive-exam trap: options are often drawn from the same chapter, so broad subject familiarity is insufficient.

The concept tested here leads specifically to Candela. Candela is the SI base unit of luminous intensity. Physics requires attention to the measured quantity, governing principle and unit. In “The SI unit of luminous intensity is:”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Pascal, Lux and Lumen 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 Candela and with the explanatory fact above.

Option A, Force, matches the evidence in the stem. Force is a derived quantity in SI system. A common name, formula, acid-base character or periodic position provides a stronger basis than superficial similarity between substances. In “Which of the following is NOT an SI base quantity?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Electric current, Length and Temperature 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 Force and with the explanatory fact above.

The defining scientific property identifies Pound. FPS system uses foot, pound and second. Physics requires attention to the measured quantity, governing principle and unit. In “Which among the following is the unit of mass in FPS system?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Kilogram, Milligram and Gram 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 Pound and with the explanatory fact above.

Centimetre is the scientifically supported answer. CGS system uses centimetre, gram and second. Physics requires attention to the measured quantity, governing principle and unit. In “In CGS system, the unit of length is:”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Metre, Foot and Yard 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 Centimetre and with the explanatory fact above.