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Test: Solids, Liquids & Gases- 1 - Class 4 MCQ


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10 Questions MCQ Test - Test: Solids, Liquids & Gases- 1

Test: Solids, Liquids & Gases- 1 for Class 4 2024 is part of Class 4 preparation. The Test: Solids, Liquids & Gases- 1 questions and answers have been prepared according to the Class 4 exam syllabus.The Test: Solids, Liquids & Gases- 1 MCQs are made for Class 4 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Solids, Liquids & Gases- 1 below.
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Test: Solids, Liquids & Gases- 1 - Question 1

Choose the correct option from the following on the basis of the packing of molecules.

Detailed Solution for Test: Solids, Liquids & Gases- 1 - Question 1

Solid > Liquid > Gas. Solids have the most tightly packed molecules and gases have the least packed molecules.

Test: Solids, Liquids & Gases- 1 - Question 2

When a gas changes into a liquid, it is called _______.

Detailed Solution for Test: Solids, Liquids & Gases- 1 - Question 2

Conversion of gases into liquids is called condensation.

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Test: Solids, Liquids & Gases- 1 - Question 3

State whether the following statement is True or False:

Some solids that dissolve in water are called soluble substances.

Detailed Solution for Test: Solids, Liquids & Gases- 1 - Question 3
  • When a solid substance dissolves in water, we call it a soluble substance. For example, when you add sugar to water and stir it, the sugar disappears because it dissolves in the water, forming a sugar water solution. So, the statement is True.

  • Here's an interesting fact: Did you know that salt, sugar, soap, and orange juice are some examples of substances that can dissolve in water?

Test: Solids, Liquids & Gases- 1 - Question 4

Which matter is normally hard?

Detailed Solution for Test: Solids, Liquids & Gases- 1 - Question 4

In the solid state, the individual particles of a substance are in fixed positions with respect to each other because there is not enough thermal energy to overcome the intermolecular interactions between the particles. As a result, solids have a definite shape and volume. Most solids are hard.

Test: Solids, Liquids & Gases- 1 - Question 5

State whether the following statement is True or False:

The substance that dissolves in a liquid to form a solution is called a solute.

Detailed Solution for Test: Solids, Liquids & Gases- 1 - Question 5

When a substance dissolves in a liquid to make a solution, it is called a solute. For example, when you mix salt in water and it disappears, salt is the solute. This makes the statement TRUE.

Test: Solids, Liquids & Gases- 1 - Question 6

What is the state of matter that takes the shape of its container?

Detailed Solution for Test: Solids, Liquids & Gases- 1 - Question 6

Liquids are cool because they can change their shape to fit into any container they are poured into. Imagine pouring juice from a glass to a bowl - the juice takes the shape of the bowl. That's what liquids do!

Test: Solids, Liquids & Gases- 1 - Question 7
What method is used to separate a mixture of sand and water?
Detailed Solution for Test: Solids, Liquids & Gases- 1 - Question 7
Sedimentation and decantation are used to separate sand from water. Sand settles at the bottom of the glass, and the clear water can be poured off, leaving the sand behind. This method is effective for separating insoluble solids from liquids.
Test: Solids, Liquids & Gases- 1 - Question 8
What changes occur to the molecules of a substance during evaporation?
Detailed Solution for Test: Solids, Liquids & Gases- 1 - Question 8
During evaporation, the molecules of a substance move further apart as they gain enough energy to escape the liquid state and enter the gas phase. This process involves an increase in kinetic energy and movement of molecules.
Test: Solids, Liquids & Gases- 1 - Question 9
Which state of matter is characterized by the highest rate of diffusion?
Detailed Solution for Test: Solids, Liquids & Gases- 1 - Question 9
Gases exhibit the highest rate of diffusion because their particles are widely spaced and move freely, allowing them to mix rapidly with other gases. This high mobility contrasts with the slow diffusion in solids and liquids.
Test: Solids, Liquids & Gases- 1 - Question 10
What is the main reason why gases are highly compressible compared to liquids and solids?
Detailed Solution for Test: Solids, Liquids & Gases- 1 - Question 10
Gases are highly compressible because they have large intermolecular spaces between particles, allowing them to be compressed into a smaller volume. This is due to the negligible forces of attraction between gas particles.
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