Choose the correct statements: (A) Weight of a substance is the amount of matter present in it. (B) Mass is the force…
Some Basic Concepts (Mole Concept) · Class 11 · JEE Main Previous Year 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 0°C 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.
- a
(B), (C) and (D) Only
- b
(A), (B) and (C) Only
- c
(A), (D) and (E) Only
- d✓
(C), (D) and (E) Only
(C), (D) and (E) Only
🧠 Get the basic definitions right This question only tests definitions. Mass, weight, volume, temperature scales, precision — each has a clear NCERT meaning. Match each statement.
🗺️ Statement by statement
- (A) "Weight is matter" — wrong. Mass is the amount of matter; weight is force due to gravity.
- (B) "Mass is force from gravity" — wrong. That is the definition of weight.
- (C) "Volume is the space occupied" — correct.
- (D) "Kelvin cannot be negative" — correct. is absolute zero, the lowest temperature possible.
- (E) "Precision = closeness of repeated measurements" — correct.
So the right ones are C, D, E.
⚠️ Common mistake Students swap mass and weight all the time because in daily life "I weigh " really means mass. In physics, mass is in kg and weight is in newtons.
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