Which of these physical properties do not change when two different substances are used to form a mixture?

Atmospheric pressure

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Melting and boiling point

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Homogeneity

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Both Atmosphericpressure and Homogeneity

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Solution

The correct option is D
Both Atmosphericpressure and Homogeneity

A pure substance has a fixed melting point or boiling point at a constant pressure. The purity of a substance can be tested by checking its melting or boiling point. When a substance is impure, i.e., another substance is added to it to form a mixture, its melting and boiling point will change.

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Similar questions

Q. Changes, in which new substances with different properties are formed, are called

(a) physical changes
(b) chemical changes
(c) irreversible changes
(d) reversible changes

Q. Which of these is a chemical change?

(a) A substacne with different chemical properties is formed.
(b) A substance in a different state but similar chemical properties is formed.
(c) The molecules of the substances do not undergo any change.
(d) A substance with a different shape and size but similar chemical properties is formed.

Q. Which of the following is not a feature of chemical change?

(I) Original substance can be obtained by simple physical methods.
(II) It is a temporary change.
(III) The new substances formed have properties different from those of the reacting substances.

Study the information given below:

1) Some substances are formed when two or more elements combined together chemically.
2) Properties of these substances are different from their respective constituents.
3) These substances cannot be broken down into their respective constituents by physical methods.

Which of the following substance has the properties listed above?

Q. Assertion :Mixture can not be represented by a chemical formula. Reason: Mixture is a material system made up of two or more different substances which are mixed but are not combined chemically. A mixture refers to the physical combination of two or more substances on which the identities are retained and are mixed in the form of solutions, suspensions, and colloids

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