Which one of the following is not a chemical action?

Breaking down compounds into elements

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Formation of a molecule by combining atoms of elements

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Separation of the molecules in a mixture

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Formation of a new compound and a new element by reaction of a compound and an element

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Solution

The correct option is D Separation of the molecules in a mixture
Separation of the molecules in a mixture is not a chemical action, as there is no bond breaking or bond formation involved. It is a physical change.

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Similar questions

Q. In a compound the (atoms/molecules) are (chemically/physically) combined so that the elements that make up the compound (retain/lose)
their identities and (do/do not) take on a new set of properties.

Q. Which is the smallest particle of an element that can take part in a chemical reaction?

(a) atom
(b) molecule
(c) compound
(d) either atom or molecule depending on the element

Which of the following statements about a compound is incorrect ?

(a) A molecule of a compound has atoms of different elements

(b) A compound cannot be separated into its constituent elements by physical methods of separation

(d) The ratio of atoms of different elements in a compound is fixed

A/an ___________ is a simple substance which cannot be further divided into one or more pure components by any chemical means. Whereas, a/an ___________ is a chemical combination of two or more simple substances.

Which of the following are true according to Dalton’s Atomic Theory?

(i) Atoms can neither be created nor destroyed in a chemical reaction.

(ii) Atoms of different elements have different masses and chemical properties.

(iii) Atoms can be broken down into smaller parts like Protons,Electons And Neutons .

(iv) Atoms of an element have variable chemical properties depending on the Chemical reactions

(v) The relative number and kinds of atoms vary in a given compound.

(vi) Atoms combine in the ratio of small whole numbers to form Compounds.

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Which one of the following is not a chemical action?

The correct option is D Separation of the molecules in a mixtureSeparation of the molecules in a mixture is not a chemical action, as there is no bond breaking or bond formation involved. It is a physical change.

The correct option is D Separation of the molecules in a mixture
Separation of the molecules in a mixture is not a chemical action, as there is no bond breaking or bond formation involved. It is a physical change.