General Science Questions and Answers

The concept tested here leads specifically to Radian. Radian is the SI supplementary unit of plane angle. Physics requires attention to the measured quantity, governing principle and unit. In “What is the SI unit of plane angle?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Revolution, Degree and Steradian 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 Radian and with the explanatory fact above.

Option A, Power, matches the evidence in the stem. Power has magnitude only and no direction. In “Which one among the following quantities is always scalar?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Force, Momentum and Velocity 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 Power and with the explanatory fact above.

The defining scientific property identifies Frequency. Frequency is measured in hertz. Physics requires attention to the measured quantity, governing principle and unit. In “Which quantity is represented by hertz as unit?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Energy, Charge and Pressure 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 Frequency and with the explanatory fact above.

Solid angle is the scientifically supported answer. Steradian is the SI supplementary unit of solid angle. Physics requires attention to the measured quantity, governing principle and unit. Closely related terms may describe cause, effect or rate of change, so the stem must be matched with the exact physical definition. In “The unit steradian is related to:”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Plane angle, Force and Frequency 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 Solid angle and with the explanatory fact above.

The concept tested here leads specifically to Pressure. Pressure has magnitude only, so it is scalar. In “Which of the following is NOT a vector quantity?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Acceleration, Weight and Velocity 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 Pressure and with the explanatory fact above.

Option D, Kelvin, matches the evidence in the stem. Kelvin is the SI base unit of temperature. Physics requires attention to the measured quantity, governing principle and unit. In “The SI unit of temperature is:”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Fahrenheit, Joule and Degree Celsius 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 Kelvin and with the explanatory fact above.

The defining scientific property identifies Displacement. Displacement is a vector quantity having direction. In “Which quantity among the following has direction but no fixed path?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Speed, Temperature and Distance 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 Displacement and with the explanatory fact above.

Mole is the scientifically supported answer. Mole is the SI base unit for amount of substance. Physics requires attention to the measured quantity, governing principle and unit. In “The SI unit of amount of substance is:”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Gram, Kilogram and Litre 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 Mole and with the explanatory fact above.

Vector quantities possess both magnitude and direction. Physics requires attention to the measured quantity, governing principle and unit. Reason (R): Force has both magnitude and direction.”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives A is false but R is true, Both A and R are true but R is not correct explanation and A is true but R is false 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. The question also illustrates a frequent competitive-exam trap: options are often drawn from the same chapter, so broad subject familiarity is insufficient. For revision, connect the stem with Both A and R are true and R is correct explanation of A 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, Ampere, matches the evidence in the stem. Ampere is the SI base unit of electric current. Physics requires attention to the measured quantity, governing principle and unit. In “What is the SI unit of electric current?”, the decisive clue should be interpreted through the underlying mechanism, not through a familiar-sounding word. The alternatives Ohm, Coulomb and Volt 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 Ampere and with the explanatory fact above.