Which of the following is not a characteristic of a physical change?

Which of the following is not a characteristic of a physical change?

(A) It is a temporary change

(B) It is usually an irreversible change

(C) Very little heat (or light) energy is usually absorbed or given out

(D) The mass of a substance does not alter in a physical change


Answer: (B) It is usually an irreversible change


Which of the following is not a characteristic of a physical change?

More Question


Question: The best malleable metal is -

(A) Aluminum

(B) Silver

(C) Gold

(D) Lead


Answer


Question: The early attempt to classify elements as metals and non-metals was made by -

(A) Mendeleev

(B) Lother Meyer

(C) Lavoisier

(D) Henry Moseley


Answer


Question: The magnet is strongest near the -

(A) Poles of the magnet

(B) Ends of the magnet

(C) Centre of the magnet

(D) On equator point from the poles of the magnet


Answer


Question: Which is the device used to detect and measure small electric currents in a circuit?

(A) Transformer

(B) Galvanometer

(C) Thermometer

(D) Electromagnetic Induction


Answer


Question: The lowest temperature at which an oil gives sufficient vapours to form an explosive mixture with air is known as -

(A) Flash Point

(B) Smoke Point

(C) Explosive Point

(D) Acidic Flux


Answer


Question: The value of G in the formula for gravitational force depends on -

(A) Mass of the earth only

(B) The radius of the earth only

(C) Both mass and radius of the earth

(D) Neither mass nor the radius of the earth


Answer


Question: When a hanging carpet is beaten with a stick, the dust particles in it start coming out of it. This phenomenon can be explained by making use of -

(A) Newton's first law of motion

(B) Newton's second law of motion

(C) Newton's third law of motion

(D) Newton's law of gravitation


Answer


Question: The numerical ratio of displacement to distance for a moving object is -

(A) Always Less than 1

(B) Equal to 1 or more than 1

(C) Always more than 1

(D) Equal to 1 or less than 1


Answer


Question: Milk of Magnesia is a -

(A) Colloid

(B) True solution

(C) Homogeneous Mixture

(D) Suspension


Answer

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