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Test: Classification Of Matter - Class 9


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5 Questions MCQ Test Science Class 9 - Test: Classification Of Matter

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Test: Classification Of Matter - Question 1

Kinetic energy of molecules is directly proportional to

Detailed Solution for Test: Classification Of Matter - Question 1

Kinetic Molecular Theory states that gas particles are in constant motion and exhibit perfectly elastic collisions.

Kinetic Molecular Theory can be used to explain both Charles’ and Boyle’s Laws.

The average kinetic energy of a collection of gas particles is directly proportional to absolute temperature only.

Test: Classification Of Matter - Question 2

Which of the following statements is uncommon for both elements and compounds?

Detailed Solution for Test: Classification Of Matter - Question 2

An element is a simple substance that cannot be broken down into simpler substances. There are more than 100 elements found on Earth. Eg., oxygen, hydrogen, gold, silver, etc.

Test: Classification Of Matter - Question 3

Which of the following is not true for a mixture?

Detailed Solution for Test: Classification Of Matter - Question 3

A mixture does not have a fixed melting point, boiling point etc. On the other hand, compounds have a a fixed melting point, boiling point.

Test: Classification Of Matter - Question 4

A compound is a _______ substance made up of _______.

Detailed Solution for Test: Classification Of Matter - Question 4

A compound is a substance formed when two or more elements are chemically joined. Water, salt, and sugar are examples of compounds. When the elements are joined, the atoms lose their individual properties and have different properties from the elements they are composed of.

Test: Classification Of Matter - Question 5

Which of the following is not a pure substance?

Detailed Solution for Test: Classification Of Matter - Question 5

Tap water is not a pure substance because it is mixed with chemicals that purify it and if it was from the ground it has naturally occurring minerals mixed in it.

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