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Test: Classification Of Matter - Class 9 MCQ


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

Test: Classification Of Matter for Class 9 2024 is part of Science Class 9 preparation. The Test: Classification Of Matter questions and answers have been prepared according to the Class 9 exam syllabus.The Test: Classification Of Matter MCQs are made for Class 9 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Classification Of Matter below.
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Test: Classification Of Matter - Question 1

What is the main characteristic of liquids?

Detailed Solution for Test: Classification Of Matter - Question 1

Liquids can change their shape. Imagine water in a glass - it takes the shape of the glass it's in. That's what liquids do, they can flow and change how they look. So, liquids don't have a fixed shape like a solid object.

Test: Classification Of Matter - Question 2

What does the activity with potassium permanganate and water show us about matter?

Detailed Solution for Test: Classification Of Matter - Question 2
  • The experiment with potassium permanganate and water teaches us that there are many tiny particles in matter.
  • Even a few crystals of potassium permanganate can color a large volume of water, showing us that there are millions of tiny particles in just one crystal of potassium permanganate.
  • These particles keep dividing into smaller and smaller particles, which is why the water continues to change color even with dilution.
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Test: Classification Of Matter - Question 3

Kinetic energy of molecules is directly proportional to

Detailed Solution for Test: Classification Of Matter - Question 3

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 4

Which of the following is not true for a mixture?

Detailed Solution for Test: Classification Of Matter - Question 4

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 5

What is the temperature at which a solid melts to become a liquid at atmospheric pressure called?

Detailed Solution for Test: Classification Of Matter - Question 5

The temperature at which a solid melts to become a liquid at atmospheric pressure is called the melting point. It shows when a solid changes to a liquid.

Test: Classification Of Matter - Question 6

What do we call the change of state directly from solid to gas without becoming a liquid first?

Detailed Solution for Test: Classification Of Matter - Question 6

When a substance changes directly from a solid to a gas without becoming a liquid first, we call it sublimation. It's like magic! Imagine ice turning into fog without becoming water first. That's sublimation! It's a cool way for some substances to change their states.

Test: Classification Of Matter - Question 7
Everything in this universe is made up of material which scientists have named _____.
Detailed Solution for Test: Classification Of Matter - Question 7
Matter is what everything in the universe is made of. It includes things like air, water, rocks, plants, and animals. Scientists call all these things "matter."
Test: Classification Of Matter - Question 8

State whether the following statement is True or False:

Matter is made up of particles that keep dividing themselves into smaller and smaller particles.

Detailed Solution for Test: Classification Of Matter - Question 8
  • Matter is made up of tiny particles that are like very small building blocks. These particles can join together to make bigger things, like how toy blocks can be put together to build a tower.
  • When we dissolve a little bit of a substance in a lot of water, like when we mix a tiny bit of coloring in a big glass of water, it shows us that even a small amount of something can spread and color a large amount of water. This tells us that there are many tiny particles in just a small amount of the substance, and these particles can keep breaking into even smaller pieces.
Test: Classification Of Matter - Question 9

All living creatures need to ____ for survival.

Detailed Solution for Test: Classification Of Matter - Question 9

Breathing is what living things do to take in oxygen from the air. This oxygen is needed to stay alive and keep our bodies working.

Test: Classification Of Matter - Question 10

What makes clothes dry faster on a windy day?

Detailed Solution for Test: Classification Of Matter - Question 10

Clothes dry faster on a windy day because the fast-moving wind takes away the wetness from the clothes, making them dry quickly. So, when you see strong wind outside, that's when your clothes will dry super fast!

Test: Classification Of Matter - Question 11

A compound is a _______ substance made up of _______.

Detailed Solution for Test: Classification Of Matter - Question 11

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 12
Particles of matter have ____ between them.
Detailed Solution for Test: Classification Of Matter - Question 12
The particles of matter have space between them. This means there is room or gaps between the particles. Like how you have space between your toys on the shelf.
Test: Classification Of Matter - Question 13

Which of the following is not a pure substance?

Detailed Solution for Test: Classification Of Matter - Question 13

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.

Test: Classification Of Matter - Question 14

What keeps the particles of matter together?

Detailed Solution for Test: Classification Of Matter - Question 14

Particles of matter stick together because of something called the force of attraction. It's like when magnets pull towards each other. This force is what keeps all the tiny particles together in different kinds of matter like water, air, and even solid things like a book or a toy.

Test: Classification Of Matter - Question 15

What happens when you pour some acetone (nail polish remover) on your palm? The particles gain energy from your palm or surroundings and _______ causing the palm to feel cool.

Detailed Solution for Test: Classification Of Matter - Question 15

When you pour nail polish remover on your palm, the liquid particles absorb energy and turn into vapor, which means they evaporate. This process makes your palm feel cool.

Test: Classification Of Matter - Question 16

State whether the following statement is True or False:

On increasing the temperature of solids, the particles start vibrating with greater speed.

Detailed Solution for Test: Classification Of Matter - Question 16
  • When you heat up solid things like ice, they start to move more and more. Think of it like when you warm up your hands on a cold day and you start moving your fingers quickly to get warm. The same thing happens to the particles in ice when you heat them up; they start moving faster. So, the statement is True.

Test: Classification Of Matter - Question 17

State whether the following statement is True or False:

Evaporation happens faster with an increase in wind speed.

Detailed Solution for Test: Classification Of Matter - Question 17

When the wind blows faster, water particles evaporate more quickly. It's like when you blow on your wet hands, they dry faster. So, when wind speed increases, water evaporates faster. That's why clothes dry quickly on a windy day!

Test: Classification Of Matter - Question 18

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

Detailed Solution for Test: Classification Of Matter - Question 18

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 19

State whether the following statement is True or False:

All solids have a definite shape, distinct boundaries, and fixed volumes, making them easy to compress.

Detailed Solution for Test: Classification Of Matter - Question 19
  • In the activities we did, we learned that solids like a pen, book, needle, and wooden stick have a definite shape, distinct boundaries, and fixed volumes, but they are not easy to compress.
  • It's like trying to squish a rock into a ball—it's very hard to do!
  • So, the statement is False.
Test: Classification Of Matter - Question 20

State whether the following statement is True or False

Particles of matter are always at rest and never move.

Detailed Solution for Test: Classification Of Matter - Question 20
  • Particles of matter are very active! They are like tiny, busy dancers. They are always moving, even if we can't see them moving with our eyes. When we look closely, we can see that they are always jiggling and bouncing around. This movement is what helps things like ink mix in water or the smell of incense to spread around the room. So, the statement that particles of matter are always at rest and never move is False!
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