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Science MCQs

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Question 831 Easy

How does temperature generally affect the solubility of a solid solute?

A
Decreases it
B
Increases it
C
No effect
D
First increases then decreases
Question 832 Easy

How does temperature affect the solubility of a gas in a liquid?

A
Increases it
B
Decreases it
C
No effect
D
Depends on the gas
Question 833 Easy

Which factor affects the solubility of gaseous solutes in liquid solvents?

A
Temperature
B
Pressure
C
Stirring
D
All of these
Question 834 Easy

What happens when the cap of a soda bottle is opened?

A
Pressure increases
B
Pressure decreases
C
CO2 dissolves more
D
Temperature increases
Question 835 Easy

Which mixture can dissolve gold?

A
Aqua regia
B
Hydrochloric acid
C
Nitric acid
D
Sulfuric acid
Question 836 Easy

Which method does NOT accelerate the process of dissolving?

A
Stirring
B
Increasing temperature
C
Using larger solute particles
D
Crushing solute
Question 837 Easy

What is the hypothesis tested in Activity 7.4?

A
Stirring speeds up dissolving
B
Temperature speeds up dissolving
C
Size of particles matters
D
Pressure affects dissolving
Question 838 Easy

What solution is used in Activity 7.7 to clean tarnished coins?

A
Salt water
B
Sugar water
C
Vinegar solution
D
Soap water
Question 839 Easy

Which of the following best defines a 'solute'?

A
A substance that dissolves another substance.
B
The component of a solution present in smaller quantity.
C
A homogeneous mixture.
D
The liquid part of a solution.
Question 840 Easy

What is a solution called when it is made by mixing only two substances?

A
Aqueous solution
B
Binary solution
C
Saturated solution
D
Dilute solution
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