Properties Of Water: Trivia Quiz!
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Questions and Answers
- 1.
Water covers over ........... of the earth’s surface.
- A.
90%
- B.
80%
- C.
70%
- D.
60%
Correct Answer
C. 70%Explanation
70% of the earth's surface is covered by water. This is a well-known fact and is supported by scientific data. The earth is predominantly covered by oceans, seas, lakes, and rivers, which contribute to the vast majority of water on the planet. The remaining percentage is occupied by landmasses and polar ice caps. This information is widely accepted and can be easily verified through various credible sources.Rate this question:
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- 2.
Water is used in many domestic activities such as....................
Correct Answer
washing,drinking,cooking,Explanation
Water is an essential resource that is used in various domestic activities. It is used for washing, including laundry and personal hygiene. Drinking water is crucial for maintaining hydration and overall health. Water is also used for cooking, as it is required for preparing meals, boiling food, and various culinary processes. Therefore, the answer "washing, drinking, cooking" accurately represents the different domestic activities where water is commonly used.Rate this question:
- 3.
Sources of water include ..................., .............., and ............
Correct Answer
underground water, surface water and rainwater.Explanation
The correct answer is underground water, surface water, and rainwater. These three sources are commonly used for various purposes. Underground water refers to water that is stored beneath the Earth's surface in aquifers and can be accessed through wells. Surface water includes water bodies such as rivers, lakes, and reservoirs. Rainwater is the precipitation that falls from the atmosphere and can be collected and used for various purposes. These sources are vital for meeting the water needs of humans, animals, and plants.Rate this question:
- 4.
Why is water considered to be a universal solvent?
- A.
Any substances dissolve in it
- B.
It is very acidi
- C.
It freezes quickly
- D.
All of the choices
Correct Answer
A. Any substances dissolve in itExplanation
Water is considered to be a universal solvent because it has the ability to dissolve a wide variety of substances. This is due to its unique molecular structure, which allows it to form hydrogen bonds with other molecules. These hydrogen bonds break apart the solute particles and surround them with water molecules, leading to their dissolution. As a result, water is capable of dissolving many different types of compounds, including polar and ionic substances.Rate this question:
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- 5.
Which substance cannot dissolve in water?
- A.
Oil
- B.
Salt
- C.
Sugar
- D.
None of the choices
Correct Answer
A. OilExplanation
Oil cannot dissolve in water because oil is non-polar and water is polar. Polar substances dissolve in polar solvents, and non-polar substances dissolve in non-polar solvents. Since water is a polar solvent and oil is a non-polar substance, they are unable to mix and dissolve in each other. This is why oil floats on top of water rather than mixing with it.Rate this question:
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- 6.
Nearby water molecules are attracted to each other by:
- A.
Covalent bonds
- B.
Dipole bonds
- C.
Hydrogen bonds
- D.
Ionic bonds
Correct Answer
C. Hydrogen bondsExplanation
Nearby water molecules are attracted to each other by hydrogen bonds. Hydrogen bonds occur when the positively charged hydrogen atom of one water molecule is attracted to the negatively charged oxygen atom of another water molecule. These bonds are weaker than covalent or ionic bonds, but still play a crucial role in the unique properties of water, such as its high boiling point, surface tension, and ability to dissolve many substances.Rate this question:
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- 7.
What is the phase of water when its temperature is 150°C?
- A.
Solid
- B.
Liquid
- C.
Gas
- D.
None of the above
Correct Answer
C. GasExplanation
At a temperature of 150°C, water is in the gas phase. This is because water boils and turns into steam at 100°C, so at a higher temperature of 150°C, the water molecules have enough energy to overcome the intermolecular forces and escape into the air as gas. Therefore, the correct answer is gas.Rate this question:
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- 8.
An unopened bottle of water is taken out of the refrigerator and placed on a table. After a while, the bottle is covered with droplets of water. What phase change has occurred?
- A.
Melting
- B.
Freezing
- C.
Boiling
- D.
Condensation
Correct Answer
D. CondensationExplanation
When a bottle of water is taken out of the refrigerator and placed on a table, the temperature of the surrounding air is warmer than the temperature of the water inside the bottle. This temperature difference causes the water vapor present in the air to cool down and condense into liquid water droplets on the surface of the cold bottle. This phase change is known as condensation.Rate this question:
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- 9.
Molten lava pours from a volcano in Hawaii. After a few hours, the liquid lava hardens into a shiny gray rock. Which phase change has taken place?
- A.
Condensation
- B.
Freezing
- C.
Melting
- D.
Boiling
Correct Answer
B. FreezingExplanation
The correct answer is Freezing. This is because the molten lava, which is in a liquid state, has cooled down and solidified into a shiny gray rock. Freezing is the phase change from a liquid to a solid when a substance loses heat and its particles slow down, forming a rigid structure.Rate this question:
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- 10.
What phases are shown in the three images below?
- A.
Image 1 is solid, image 2 is gas, and image 3 is liquid.
- B.
Image 1 is gas, image 2 is solid, and image 3 is liquid.
- C.
Image 1 is gas, image 2 is liquid, and image 3 is solid.
- D.
Image 1 is liquid, image 2 is solid, and image 3 is gas.
Correct Answer
D. Image 1 is liquid, image 2 is solid, and image 3 is gas.Explanation
The explanation for the correct answer is that in image 1, the substance appears to be in a liquid state as it has a definite volume but takes the shape of its container. In image 2, the substance appears to be in a solid state as it has a definite shape and volume. In image 3, the substance appears to be in a gas state as it has neither a definite shape nor volume and fills the entire space available to it.Rate this question:
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- 11.
Boiling
- A.
Hydrogen and sodium
- B.
Hydrogen and oxygen
- C.
Hydrogen and oxygen
Correct Answer
B. Hydrogen and oxygenExplanation
Boiling is the process in which a substance changes from a liquid state to a gaseous state by the addition of heat. In this case, the question is asking for the combination of elements that can undergo boiling. Hydrogen and oxygen are both elements that can exist as gases at certain temperatures and pressures, and when combined, they form water. Therefore, the correct answer is hydrogen and oxygen.Rate this question:
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- 12.
How long can the average human survive without water?
- A.
How long can the average human survive without water?
- B.
A few weeks
- C.
A month
- D.
1 day
Correct Answer
B. A few weeksExplanation
The average human can survive without water for a few weeks. Water is essential for the body to function properly, as it is involved in various bodily processes such as digestion, circulation, and temperature regulation. Without water, dehydration occurs, leading to symptoms like fatigue, dizziness, and confusion. The exact duration of survival without water varies depending on factors such as individual health, activity level, and environmental conditions. However, it is generally accepted that a few weeks is the maximum limit for survival without water.Rate this question:
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- 13.
At what temperature does water boil?
- A.
200 C
- B.
150 C
- C.
100 C
- D.
50 C
Correct Answer
C. 100 CExplanation
Water boils at 100 degrees Celsius. This is the boiling point of water at sea level under normal atmospheric pressure. At this temperature, water changes from a liquid state to a gaseous state, forming steam. It is a well-known fact and a fundamental concept in thermodynamics.Rate this question:
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- 14.
At what temperature does water freeze?
- A.
-10 C
- B.
0 C
- C.
5 C
- D.
10 C
Correct Answer
B. 0 CExplanation
Water freezes at 0 degrees Celsius. This is the temperature at which water molecules slow down and form a solid crystal lattice structure. At temperatures below 0 degrees Celsius, water molecules move even slower and become more tightly packed together, forming ice. Therefore, 0 degrees Celsius is the freezing point of water.Rate this question:
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- 15.
What is the average pH level of pure water?
- A.
3
- B.
5
- C.
7
- D.
9
Correct Answer
C. 7Explanation
The average pH level of pure water is 7. pH is a measure of the acidity or alkalinity of a solution, with values below 7 indicating acidity, and values above 7 indicating alkalinity. Pure water is considered neutral, meaning it has an equal balance of acidity and alkalinity, resulting in a pH level of 7.Rate this question:
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- 16.
In which step of the water cycle does liquid water transform into gas?
- A.
Transpiration
- B.
Condensation
- C.
Precipitation
- D.
Evaporation
Correct Answer
D. EvaporationExplanation
Evaporation is the process in which liquid water transforms into gas. During evaporation, heat energy from the surroundings causes the water molecules to gain enough energy to break their bonds and escape into the air as water vapor. This occurs mainly from the surface of oceans, lakes, and rivers, but can also happen from plants through a process called transpiration. Condensation, precipitation, and transpiration are all steps in the water cycle, but they involve the transformation of water vapor into liquid water, not the other way around.Rate this question:
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- 17.
Which of the following is the chemical formula for water?
- A.
NaCl
- B.
H2O
- C.
CO2
- D.
W
Correct Answer
B. H2OExplanation
The chemical formula for water is H2O. This formula represents that water is composed of two hydrogen atoms bonded to one oxygen atom. The subscript "2" indicates that there are two hydrogen atoms present in the molecule.Rate this question:
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- 18.
Which of the following is the solid state of water?
- A.
Ice
- B.
Liquid
- C.
Vapor
- D.
Solid
Correct Answer
A. IceExplanation
Ice is the solid state of water. When water is cooled below its freezing point, the molecules slow down and arrange themselves in a regular pattern, forming a solid structure known as ice. In this state, the water molecules are held together by intermolecular forces, creating a rigid and organized substance. Ice is commonly found in the form of ice cubes, icebergs, or snow, and it has a lower density than liquid water, which is why it floats on its surface.Rate this question:
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- 19.
What is 'potable' water?
- A.
Water contaminated with deadly bacteria
- B.
Water that has been polluted
- C.
Water that is drinkable
- D.
Salt water from the oceans
Correct Answer
C. Water that is drinkableExplanation
Potable water refers to water that is safe and suitable for drinking. It is free from harmful contaminants such as bacteria, viruses, chemicals, and pollutants. This type of water meets the necessary quality standards and does not pose any health risks when consumed. Potable water can come from various sources, including treated tap water, bottled water, and natural freshwater sources like rivers and lakes, as long as it has undergone proper purification and meets the required standards for human consumption.Rate this question:
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- 20.
Water is only found on Earth because Hydrogen and Oxygen are rarely found outside the Earth's atmosphere.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement is false because water is not only found on Earth. Water has been detected on other celestial bodies such as Mars, the Moon, and various moons of Jupiter and Saturn. Additionally, hydrogen and oxygen, the components of water, are among the most abundant elements in the universe, and can be found in various forms throughout space. Therefore, the presence of water is not limited to Earth due to the rarity of hydrogen and oxygen outside of Earth's atmosphere.Rate this question:
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