# SSC First Quarterly Examination In Science 7

Approved & Edited by ProProfs Editorial Team
At ProProfs Quizzes, our dedicated in-house team of experts takes pride in their work. With a sharp eye for detail, they meticulously review each quiz. This ensures that every quiz, taken by over 100 million users, meets our standards of accuracy, clarity, and engagement.
| Written by GNHS2016sirjsm
G
GNHS2016sirjsm
Community Contributor
Quizzes Created: 3 | Total Attempts: 6,156
Questions: 46 | Attempts: 43

Settings

• 1.

• 2.

• 3.

### When it contains less solute than the maximum amount it can dissolve at a given temperature, it is called ______ solution.

• A.

Saturated

• B.

Unsaturated

• C.

Homogeneous

• D.

Concentrated

B. Unsaturated
Explanation
An unsaturated solution is formed when a solvent contains less solute than it can dissolve at a given temperature. In this type of solution, there is still room for more solute to dissolve. This can happen when the solute is added gradually or when the solution is not yet at its maximum capacity to dissolve the solute.

Rate this question:

• 4.

### It has a small amount of dissolved solute in comparison to the amount of solvent.

• A.

Saturated solution

• B.

Concentrated solution

• C.

Dilute solution

• D.

Molarity

C. Dilute solution
Explanation
A dilute solution refers to a solution that has a small amount of dissolved solute compared to the amount of solvent. This means that the concentration of the solute is relatively low. In other words, the solution is not heavily concentrated with the solute.

Rate this question:

• 5.

### What kind of mixtures that has a uniform composition and appearance all throughout?

• A.

Heterogeneous mixture

• B.

Composite mixture

• C.

Homogenous mixture

• D.

Concrete mixture

C. Homogenous mixture
Explanation
A homogeneous mixture is a type of mixture that has a uniform composition and appearance throughout. This means that all the components of the mixture are evenly distributed and cannot be easily distinguished from one another. In other words, there are no visible boundaries or separations between the different substances in a homogeneous mixture. This is in contrast to a heterogeneous mixture, where the components are not evenly distributed and can be easily distinguished. A composite mixture refers to a combination of different materials, while a concrete mixture specifically refers to a combination of cement, sand, gravel, and water.

Rate this question:

• 6.

### A dye that changes into a specific color depending on whether it is placed in an acidic solution or in a basic one.

• A.

PH scale

• B.

Indicator

• C.

Sodium hydroxide

• D.

Acidicity

B. Indicator
Explanation
An indicator is a substance that changes color depending on whether it is in an acidic or basic solution. In this case, the dye described in the question is an indicator because it changes into a specific color depending on whether it is placed in an acidic or basic solution. Therefore, the correct answer is "Indicator."

Rate this question:

• 7.

### What property of metal that identify a metal based on its appearance

• A.

Luster

• B.

Ductile

• C.

Magnetic

• D.

Conduct electricity

A. Luster
Explanation
Luster refers to the way a metal reflects light, giving it a shiny appearance. This property is unique to metals and can be used to identify them based on their appearance. Metals have a characteristic metallic luster, which is a result of their ability to reflect light due to the presence of free electrons in their structure. Non-metals and other materials do not exhibit this property, making luster an important characteristic in identifying metals.

Rate this question:

• 8.

### They are elements exhibiting properties that are intermediate to metals and nonmetals. What are they?

• A.

Oxides

• B.

Metals

• C.

Non metals

• D.

Metalloids

D. Metalloids
Explanation
Metalloids are elements that exhibit properties that are intermediate between metals and nonmetals. They have characteristics of both metals and nonmetals, such as being able to conduct electricity like metals but also being brittle like nonmetals. Metalloids are found in the periodic table along the staircase line, separating metals from nonmetals. Examples of metalloids include boron, silicon, and arsenic.

Rate this question:

• 9.

### An acidic mixture has a pH that is less than ____.

• A.

7

• B.

9

• C.

10

• D.

8

A. 7
Explanation
An acidic mixture has a pH that is less than 7 because the pH scale ranges from 0 to 14, with 7 being neutral. A pH value below 7 indicates increasing acidity, with lower numbers indicating stronger acidity. Therefore, any pH value less than 7 would classify a mixture as acidic.

Rate this question:

• 10.

### These refer to the  list of the different nutrients provided by the food product with their corresponding percentage share on the daily recommended dietary allowance.

• A.

Ingredients

• B.

Nutrition facts

• C.

Recipes

• D.

Procedures

B. Nutrition facts
Explanation
The given answer, "Nutrition facts," is correct because it refers to the list of different nutrients provided by a food product and their corresponding percentage share on the daily recommended dietary allowance. Nutrition facts provide important information about the nutritional content of a food item, including the amount of calories, carbohydrates, proteins, fats, vitamins, and minerals it contains. This information helps individuals make informed decisions about their diet and ensure they are meeting their nutritional needs.

Rate this question:

• 11.

### During boiling, the temperature of a __________ changes at the start then it becomes the same; while the temperature of a __________ is different at different times

• A.

Atom; element

• B.

Mixture;Substance

• C.

Substance; Mixture

• D.

Base; Acid

C. Substance; Mixture
Explanation
During boiling, the temperature of a substance changes at the start then it becomes the same; while the temperature of a mixture is different at different times. This is because during boiling, a substance undergoes a phase change from a liquid to a gas, and its temperature remains constant until all of the substance has vaporized. On the other hand, a mixture is a combination of different substances, each with its own boiling point. Therefore, during boiling, the temperature of a mixture can vary as different components vaporize at different times.

Rate this question:

• 12.

### This refers the relative amounts of solute and solvent in a given volume of solution.

• A.

Solubility

• B.

Concentration

• C.

Molality

• D.

Solution

B. Concentration
Explanation
Concentration refers to the relative amounts of solute and solvent in a given volume of solution. It is a measure of how much solute is dissolved in a solvent, and can be expressed in various ways such as mass/volume, moles/volume, or percent by mass. Concentration is an important factor in determining the properties and behavior of a solution, as it affects factors such as solubility, reaction rates, and colligative properties.

Rate this question:

• 13.

### The component present in small amount in the solution.

• A.

Particle

• B.

Concentrates

• C.

Solvent

• D.

Solute

D. Solute
Explanation
A solute is a component that is present in small amounts in a solution. It is the substance that gets dissolved in the solvent to form a solution. In this context, the solute is the component present in small amount in the solution.

Rate this question:

• 14.

### Which of the following is a substance?

• A.

Ice candy

• B.

Nova snack

• C.

Distilled water

• D.

Ice cream

C. Distilled water
Explanation
Distilled water is a substance because it is a pure form of water that has undergone a process called distillation, which removes impurities and contaminants. It does not contain any additional ingredients or additives, making it a pure substance. Ice candy, Nova snack, and ice cream are not substances as they are made up of multiple ingredients and do not exist in a pure form.

Rate this question:

• 15.

### The following are the characteristics of solution except:

• A.

It is a homogeneous mixture.

• B.

The solute cannot be separated from the solvent through filtration.

• C.

The solute can be separated by any means.

• D.

A solution is often clear and transparent.

C. The solute can be separated by any means.
Explanation
This answer is correct because the other three characteristics listed are all true for solutions. A solution is a homogeneous mixture where the solute is evenly distributed throughout the solvent. The solute cannot be separated from the solvent through filtration because the particles are too small to be trapped by a filter. Solutions are often clear and transparent because the particles are so small that they do not scatter light. However, the solute can be separated from the solvent through other means such as evaporation, distillation, or precipitation.

Rate this question:

• 16.

### Which of the household products is a base?

• A.

Vinegar

• B.

Bleach

• C.

Milk

• D.

Rainwater

B. Bleach
Explanation
Bleach is a base because it contains sodium hypochlorite, which is a strong base. Bases are substances that can accept hydrogen ions (H+) or donate hydroxide ions (OH-) in a chemical reaction. Bleach, when dissolved in water, releases hydroxide ions, making it a base. Vinegar is an acid because it contains acetic acid, milk is neutral, and rainwater can vary in pH but is usually slightly acidic due to the presence of carbon dioxide in the atmosphere.

Rate this question:

• 17.

### Acids and bases with high concentrations can cause _______.

• A.

Happiness

• B.

Sweetness

• C.

Serious burns

• D.

Good eye sight

C. Serious burns
Explanation
Acids and bases with high concentrations can cause serious burns because they are corrosive substances that can damage and destroy skin tissue upon contact. These substances have a strong chemical reaction with the proteins and fats in the skin, leading to severe damage and pain. It is important to handle and use acids and bases with caution and proper protective measures to avoid such injuries.

Rate this question:

• 18.

### This refers to any compound of oxygen with another element or a radical.

• A.

Oxide

• B.

Halide

• C.

Halogen

• D.

Metal

A. Oxide
Explanation
An oxide refers to any compound of oxygen with another element or a radical. This means that it is a combination of oxygen with another element or group of atoms. Oxides can be formed by the reaction of oxygen with metals, nonmetals, or even other compounds. They can have various chemical and physical properties depending on the specific elements involved. Examples of common oxides include carbon dioxide (CO2), iron oxide (Fe2O3), and sulfur dioxide (SO2).

Rate this question:

• 19.

### In a compound Iron phyrophates, which element can be found to this compound aside from Iron and Oxygen?

• A.

Calcium

• B.

Sulfur

• C.

Phosphorus

• D.

Helium

C. Phosphorus
Explanation
In a compound Iron phyrophates, phosphorus can be found aside from iron and oxygen. Phosphorus is a common element that forms compounds with iron and oxygen. Iron pyrophosphates are a group of compounds that contain iron, oxygen, and phosphorus. These compounds are often used in various industrial applications, such as in the production of fertilizers and food additives.

Rate this question:

• 20.

### The list of the materials that have been added to make the food product. These materials are the sources of the nutrients. These are the ones that are taken in by the body.

• A.

Nutrition Facts

• B.

Minerals

• C.

• D.

Ingredients

D. Ingredients
Explanation
The given answer "Ingredients" is correct because it refers to the list of materials that have been added to make a food product. These ingredients are the sources of the nutrients contained in the food. They are the components that are taken in by the body when consuming the food.

Rate this question:

• 21.

### During melting, a substance melts ________within a short time; while a mixture has portions that seem to be not _____.

• A.

Successfully; cooled

• B.

Completely; Melting

• C.

Temporarily;Melting

• D.

Successfully; Melting

B. Completely; Melting
Explanation
During melting, a substance undergoes a phase change from solid to liquid state completely within a short time. In contrast, a mixture may contain different components with different melting points, causing some portions to not fully melt. Therefore, the correct answer is "Completely; Melting".

Rate this question:

• 22.

### A substance formed by chemical union of two or more elements or ingredients in definite proportion by weight.

• A.

Element

• B.

Mixture

• C.

Acid

• D.

Compound

D. Compound
Explanation
A compound is a substance that is formed when two or more elements or ingredients combine chemically in a definite proportion by weight. In other words, it is the result of a chemical union between different elements. This distinguishes compounds from mixtures, which are formed by physically combining substances without any chemical reaction. Compounds also differ from elements, which are pure substances that cannot be broken down into simpler substances. Lastly, compounds are distinct from acids, which are a specific type of compound characterized by their ability to donate protons or accept electrons.

Rate this question:

• 23.

### Describe the above picture

• A.

Concentrated

• B.

Dilute

• C.

Saturated

• D.

Unsaturated

A. Concentrated
Explanation
The above picture appears to depict a solution or substance that has a high concentration of solute particles compared to the solvent. This is indicated by the presence of a large number of solute particles in a given volume. The solution is not diluted or mixed with a large amount of solvent. Therefore, the correct answer is "Concentrated".

Rate this question:

• 24.

### The following are the examples of naturally occuring solution except;

• A.

Ocean

• B.

Wine

• C.

Air

• D.

Blood

B. Wine
Explanation
The examples listed in the question are all natural occurrences except for wine. Ocean, air, and blood are all naturally occurring solutions found in nature. However, wine is a product that is made through the fermentation of grapes, which is a human-made process. Therefore, wine does not qualify as a naturally occurring solution.

Rate this question:

• 25.

### The solution that contains the maximum amount of solute dissolved by a given amount of solvent.

• A.

Unsaturated solution

• B.

Solvent

• C.

Solute

• D.

Saturated solution

D. Saturated solution
Explanation
A saturated solution is the solution that contains the maximum amount of solute dissolved by a given amount of solvent. In a saturated solution, the solute is completely dissolved and any additional solute added will not dissolve further. This is because the solvent has reached its maximum capacity to dissolve the solute at a given temperature and pressure.

Rate this question:

• 26.

### A chemical decomposition reaction produced by passing an electric current through a solution containing ions.

• A.

Distillation

• B.

Electrolysis

• C.

Evaporation

• D.

Condensation

B. Electrolysis
Explanation
Electrolysis is the correct answer because it involves the process of using an electric current to decompose a chemical compound or solution containing ions. This process breaks down the compound into its individual elements or ions, which can then be collected or used for other purposes. Distillation, evaporation, and condensation are not relevant to the given description, as they do not involve the use of an electric current for decomposition.

Rate this question:

• 27.

### The property of metal that allows electricity to pass through a material.

• A.

Electrical conductivity

• B.

Ductile

• C.

Magnetic

• D.

Luster

A. Electrical conductivity
Explanation
Electrical conductivity refers to the property of a material that allows the flow of electric current. Metals are known for their high electrical conductivity as they have free electrons that can easily move through the material, carrying the electric charge. This property is essential for many applications, such as in electrical wiring and circuitry, where metals are commonly used due to their ability to efficiently conduct electricity.

Rate this question:

• 28.

### The property of metal that can be hammered or rolled into thin sheets without breaking the metal.

• A.

Luster

• B.

Malleable

• C.

Ductile

• D.

Magnetic

C. Ductile
Explanation
Ductility is the property of a metal that allows it to be hammered or rolled into thin sheets without breaking. This means that the metal can be easily stretched into wire or flattened into thin foils. Ductile materials can undergo significant deformation under tensile stress without fracturing. Luster refers to the shininess or reflectivity of a metal, malleability refers to the ability to be hammered or shaped, and magnetism refers to the attraction of a metal to a magnetic field. Therefore, the correct answer is ductile.

Rate this question:

• 29.

### Which of the following affect how fast a solid solute dissolves except?

• A.

Freezing

• B.

Stirring

• C.

Temperature

• D.

Particle size

A. Freezing
Explanation
Freezing does not affect the rate at which a solid solute dissolves. When a solute dissolves, the solvent molecules surround the solute particles and break them apart. This process is not affected by freezing, which is the conversion of a liquid into a solid due to a decrease in temperature. Stirring helps to increase the rate of dissolution by bringing fresh solvent into contact with the solute. Temperature affects the rate of dissolution, as higher temperatures provide more energy for the solute particles to break apart and mix with the solvent. Particle size also affects dissolution, as smaller particles have a larger surface area available for interaction with the solvent, leading to faster dissolution.

Rate this question:

• 30.

### The process of purifying a liquid by boiling it and condensing its vapors.

• A.

Distillation

• B.

Condensation

• C.

None of these

• D.

Evaporation

A. Distillation
Explanation
Distillation is the correct answer because it involves the process of purifying a liquid by boiling it and then condensing its vapors. During distillation, the liquid is heated to create vapor, which is then cooled and collected as a purified liquid. This process is commonly used in industries and laboratories to separate and purify different components of a liquid mixture based on their boiling points. Condensation, evaporation, and none of these are not accurate because they do not specifically involve the purification process through boiling and condensing vapors.

Rate this question:

• 31.

### How many mL of ethyl alcohol are present in a 50 mL bottle of rubbing alcohol?

• A.

35 mL

• B.

40 mL

• C.

15 mL

• D.

20 mL

A. 35 mL
Explanation
The correct answer is 35 mL because rubbing alcohol typically contains about 70% isopropyl alcohol, which means that 30% of the liquid is other ingredients. Since the bottle is 50 mL, 30% of that is 15 mL. Therefore, the remaining 70% of the liquid is isopropyl alcohol, which is 35 mL.

Rate this question:

• 32.

### A substance consisting of two or more substances mixed together.

• A.

Element

• B.

Compound

• C.

Mixture

• D.

Substance

C. Mixture
Explanation
A mixture is the correct answer because it refers to a substance that consists of two or more substances mixed together. In a mixture, the individual components retain their own properties and can be physically separated from one another. This is different from a compound, where two or more elements chemically combine to form a new substance with different properties. An element is a pure substance that cannot be broken down into simpler substances, and a substance refers to any material that has a definite composition and distinct properties.

Rate this question:

• 33.

### Would it be possible to have a mixture made of all carbon atoms and compounds with only carbon atoms?

• A.

Yes

• B.

No

• C.

Maybe

• D.

No idea

B. No
Explanation
It is not possible to have a mixture made of all carbon atoms and compounds with only carbon atoms because compounds are formed when two or more elements combine chemically. Carbon atoms can form compounds with other elements such as hydrogen, oxygen, nitrogen, and many more. Therefore, a mixture made of all carbon atoms and compounds with only carbon atoms would not be possible.

Rate this question:

• 34.

### What are the elements found in water?

• A.

Calcium and Nitrogen

• B.

Carbon and Helium

• C.

Hydrogen and Carbon

• D.

Hydrogen and Oxygen

D. Hydrogen and Oxygen
Explanation
Water is composed of two elements, hydrogen and oxygen. The chemical formula for water is H2O, which indicates that each water molecule contains two hydrogen atoms and one oxygen atom. Hydrogen and oxygen combine through a chemical reaction to form water molecules. This combination is essential for the existence of water and its unique properties, such as its ability to dissolve many substances and its importance for various biological processes.

Rate this question:

• 35.

### Who proposed the pH scale used to determine the acidity and basicity of the solution?

• A.

Soren Peter Lauritz Sorensen

• B.

Albert Einstein

• C.

Aristotle

• D.

Charles Darwin

A. Soren Peter Lauritz Sorensen
Explanation
Soren Peter Lauritz Sorensen proposed the pH scale used to determine the acidity and basicity of a solution. The pH scale measures the concentration of hydrogen ions in a solution, with values ranging from 0 (acidic) to 14 (basic). Sorensen introduced this logarithmic scale in 1909 while working at the Carlsberg Laboratory in Denmark. His contribution revolutionized the field of chemistry and provided a standardized method for quantifying the acidity or basicity of solutions.

Rate this question:

• 36.

### You were tasked to check if the liquid sample you have is a substanceor a mixture. Which among these tests is the BEST way to do so?I. Color comparisonII. Taste comparisonIII. Boiling testIV. Melting test

• A.

I, II, III and IV

• B.

I, II and III only

• C.

I, II and IV only

• D.

III and IV only

D. III and IV only
Explanation
The best way to determine if a liquid sample is a substance or a mixture is by conducting a boiling test (III) and a melting test (IV). By subjecting the sample to different temperatures, we can observe if it boils or melts at a specific temperature range, which indicates that it is a pure substance. If the sample does not have a specific boiling or melting point, it suggests that it is a mixture consisting of different substances with varying boiling and melting points. Therefore, the combination of these two tests provides the most accurate assessment.

Rate this question:

• 37.

### A liquid has the following properties: one-phase, colorless, boils atvarying temperature. Which of the following BEST describes theliquid?

• A.

Substance

• B.

Solution

• C.

Suspension

• D.

Coarse mixture

B. Solution
Explanation
The liquid is described as a solution because it is colorless and has only one phase, indicating that it is a homogeneous mixture of two or more substances. Additionally, the fact that it boils at varying temperatures suggests that it is a solution rather than a pure substance, suspension, or coarse mixture.

Rate this question:

• 38.

### Which of the following statements is TRUE?

• A.

Water is composed of more than two elements.

• B.

Compounds are more complex than elements.

• C.

Compounds are made up of one kind of element.

• D.

Ferrous sulfate cannot be broken down into simpler substances.

B. Compounds are more complex than elements.
Explanation
The statement "Compounds are more complex than elements" is true because compounds are formed by the combination of two or more different elements in specific ratios, resulting in a substance with unique properties and characteristics. Elements, on the other hand, are pure substances that cannot be broken down into simpler substances by chemical means. Therefore, compounds are generally more complex than elements due to their composition and the interactions between the different elements involved.

Rate this question:

• 39.

### Which statement describes the solute?

• A.

It is the solid formed in solution.

• B.

It is the liquid part of the solution.

• C.

It is the component of a solution in smaller amount.

• D.

It is the component of a solution in bigger amount.

C. It is the component of a solution in smaller amount.
Explanation
The solute is the component of a solution that is present in a smaller amount. In a solution, the solute is the substance that is dissolved in the solvent. The solvent is the component of the solution that is present in a larger amount and does the dissolving. Therefore, the correct answer is that the solute is the component of a solution in smaller amount.

Rate this question:

• 40.

### Arrange the following household items: toothpaste, bath soap, tap water,vinegar from the most acidic to most basic?

• A.

Tap water, milk, toothpaste, vinegar

• B.

Milk, tap water, vinegar, toothpaste

• C.

Toothpaste, milk, tap water, vinegar

• D.

Vinegar, tap water, milk, toothpaste

D. Vinegar, tap water, milk, toothpaste
Explanation
The correct answer arranges the household items in order of acidity. Vinegar is the most acidic, followed by tap water, then milk, and finally toothpaste.

Rate this question:

• 41.

### Which of the following elements is most likely ductile at roomtemperature?

• A.

Sulfur

• B.

Mercury

• C.

Nitrogen

• D.

Aluminum

D. Aluminum
Explanation
Aluminum is most likely ductile at room temperature because it is a metal with a face-centered cubic crystal structure, which allows for the movement of atoms and the ability to be deformed without breaking. Additionally, aluminum has a high melting point and low density, making it easy to shape and mold into various forms. Its ductility makes it a popular choice for applications such as construction, packaging, and transportation industries.

Rate this question:

• 42.

### Calcium chloride is a compound of the two elements calcium andchlorine. Which of the following statements is TRUE?

• A.

Calcium chloride is listed in the periodic table

• B.

The symbol for calcium chloride includes Ca and Cl

• C.

Chlorine may still be broken down into a simpler form.

• D.

Calcium and chlorine belong to the same group in the periodic table.

B. The symbol for calcium chloride includes Ca and Cl
Explanation
The symbol for calcium chloride includes Ca and Cl because calcium chloride is a compound made up of calcium (Ca) and chlorine (Cl) atoms.

Rate this question:

• 43.

### Which of the following is an example of a solution?

• A.

Vinegar

• B.

Ice cream

• C.

Mud in water

• D.

Oil mixed in soy sauce

A. Vinegar
Explanation
Vinegar is an example of a solution because it is a homogeneous mixture of acetic acid and water. In a solution, the solute (acetic acid) is evenly distributed and dissolved in the solvent (water), creating a uniform composition throughout. Vinegar meets this criteria as it is a clear liquid where acetic acid molecules are dispersed and uniformly mixed with water molecules. Therefore, vinegar is a solution.

Rate this question:

• 44.

### Jill has an unopened box of a 2-meter foil labeled 100% made of aluminum. Aluminum is a substance. Jill takes just a thumb-size piece of the aluminum foil. Which of the following statements is TRUE about the piece of aluminum foil that Jill took compared with the rest that was left in the box

• A.

The mass is the same but the melting behavior is different.

• B.

The mass is different but the melting behavior is the same.

• C.

Its mass and melting behavior are the same.

• D.

Its mass and melting behavior are different.

B. The mass is different but the melting behavior is the same.
Explanation
The mass of the thumb-size piece of aluminum foil that Jill took is different from the rest that was left in the box. However, the melting behavior of both the piece and the rest of the foil is the same.

Rate this question:

• 45.

### Soap has a pH value of 8 to 9. What is it? Basic mixture

• A.

Acidic mixture

• B.

Dilute solution

• C.

Basic mixture

• D.

Concentrated solution

C. Basic mixture
Explanation
Soap has a pH value of 8 to 9, which falls within the range of a basic solution on the pH scale. A basic mixture typically has a pH value greater than 7, indicating that it is alkaline rather than acidic. Therefore, the correct answer is "Basic mixture."

Rate this question:

• 46.

• A.

Mercury

• B.

Nitrogen

• C.

Carbon

• D.

Calcium