JEE Main 2025 Chemistry question
Choose the correct statements. (A) Weight of a substance is the amount of matter present in it. (B) Mass is the force exerted by gravity on an object. (C) Volume is the amount of space occupied by a substance. (D) Temperatures below 0ºC are possible in Celsius scale, but in Kelvin scale negative temperature is not possible. (E) Precision refers to the closeness of various measurements for the same quantity.
Answer: (4)
Solution
Mass (not weight) is amount of matter; weight is force due to gravity. Statements A and B are incorrectly defined, hence swapped.