Chemistry is very important in understanding the MDCAT syllabus because most of the medical concepts, especially in biochemistry and pharmaceutical sciences, are based on chemistry. The 9th Class Chemistry Complete Quiz serves as a crucial tool for students to strengthen their basic knowledge in key subjects, including atomic structure, periodic tables, chemical bondings, acids, bases, and salts. It helps students self-evaluate and prepare for complex problems they might encounter both in academic and entrance exams.
Key Topics Covered in the Chemistry Quiz
The 9th Class Chemistry Complete Quiz covers a variety of topics for the best possible preparation. Questions on matter and its properties, atomic theory, molecular formulae, and chemical reactions will be found by the students. Chapters on solutions, mixtures, and electrochemistry are also included so that students can understand the theoretical and practical aspects of chemistry.
This quiz is designed to improve critical thinking and problem-solving abilities. It helps students apply knowledge to real-life situations, ensuring they can answer tricky questions that may appear in the MDCAT Chemistry section.
Quiz for Practice
The MDCAT Quiz for 9th Class Chemistry provides exam-oriented questions for students to prepare effectively. It focuses on frequently tested concepts and contains a variety of multiple-choice questions (MCQs) so that students get familiar with the type of questions they will face in exams. Regular practice of these quizzes improves time management, accuracy, and analytical thinking, which are very vital for entrance exams.
- Test Name: 9th Class Chemistry Complete Quiz
- Total Questions: 240
- Total Marks: 240
- Time: 120 minutes
Note: Answer of the questions will change randomly each time you start the test, once you are finished, click the View Results button.
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Free Flashcard for Quick Revision
In addition to quizzes, students can use free flashcards to revise key chemical formulas, equations, and definitions from the 9th Class Chemistry syllabus. These flashcards provide quick and efficient revision of crucial information that can be recalled during exams. Flashcards are an excellent tool for last-minute preparation, making complex topics easy to remember.
What is the term for a reaction in which electrons are transferred between reactants?
Redox
Which type of reaction involves the exchange of ions between two compounds?
Double displacement
What is the term for the gain of electrons by a substance during a chemical reaction?
Reduction
Which type of reaction involves the reaction between an acid and a base to produce water and a salt?
Neutralization
What is the term for a chemical reaction that involves the exchange of ions between two compounds?
Double displacement
What is the term for a substance that speeds up a chemical reaction by providing an alternative pathway with lower activation energy?
Catalyst
What type of reaction occurs when a metal reacts with an acid to produce hydrogen gas and a salt?
Single displacement
What is the term for the reactant that is completely consumed in a chemical reaction?
Limiting reactant
What is the term for the reactant in excess in a chemical reaction?
Excess reactant
What is the term for a substance that speeds up a chemical reaction without being consumed in the process?
Catalyst
What is the term for a chemical reaction that absorbs energy from its surroundings?
Endothermic
What is the term for a chemical reaction that releases energy in the form of heat or light?
Exothermic
Which factor does not affect the rate of a chemical reaction?
Catalyst
What is the term for a substance that undergoes a chemical reaction?
Reactant
What is the term for a substance formed by a chemical reaction?
Product
What is the term for a substance that speeds up a chemical reaction by lowering the activation energy?
Catalyst
What type of reaction occurs when a metal reacts with an acid to produce hydrogen gas and a salt?
Single displacement
Which type of reaction involves the transfer of electrons between reactants?
Redox
What is the term for the number of particles in one mole of a substance?
Avogadro's number
What is the term for the rearrangement of atoms or ions to form new substances?
Chemical reaction
What is the term for the process of breaking down a molecule into smaller molecules or atoms?
Decomposition
What is the term for a substance that slows down the rate of a chemical reaction?
Inhibitor
What is the term for a substance that speeds up the rate of a chemical reaction without being consumed?
Catalyst
Which factor does not affect the rate of a chemical reaction?
Temperature
What is the term for the minimum amount of energy required to start a chemical reaction?
Activation energy
What type of reaction occurs when a metal oxide reacts with an acid to produce a salt and water?
Acid-base
What type of reaction occurs when an acid reacts with a metal to produce hydrogen gas and a salt?
Single displacement
What type of reaction occurs when a non-metal displaces another non-metal in a compound?
No reaction
What type of reaction occurs when a metal displaces another metal in a compound?
Single displacement
What is the process called when an atom or ion loses electrons?
Oxidation
What is the term for the electrode where reduction occurs in an electrochemical cell?
Cathode
What is the process of using electricity to convert chemical energy into electrical energy?
Galvanic cell
What is the term for the ratio of the actual voltage of a cell to its standard cell potential?
Cell efficiency
Which of the following metals is commonly used as a reference electrode in electrochemistry?
Platinum
What is the term for the reduction potential of an electrode measured against a standard hydrogen electrode?
Standard reduction potential
Which of the following is not a type of electrochemical cell?
Thermocell
What is the formula for calculating charge using Faraday's constant?
Q = nF
What is the process of using electricity to coat a metal object with a thin layer of metal called?
Electroplating
What is the term for the measure of the ability of a substance to conduct electricity?
Conductivity
What is the term for the force that drives the flow of electrons in a circuit?
Voltage
What is the unit of electric charge equal to one coulomb per second?
Ampere
What is the process of breaking down a compound using electricity called?
Electrolysis
Which of the following is not a component of an electrochemical cell?
Electrolyte
What is the term for the maximum potential difference between the cathode and anode in an electrochemical cell?
Cell potential
What is the electromotive force (EMF) of a cell under standard conditions called?
Standard cell potential
What is the formula for calculating cell potential under standard conditions?
E°cell = E°cathode - E°anode
What is the term for the electrode potential of a half-cell measured against a standard hydrogen electrode?
Standard electrode potential
What is the process of preventing corrosion of a metal by applying a protective layer of another metal?
Galvanization
What is the process of using an external source of electric current to force a non-spontaneous chemical reaction?
Electrolysis
Which of the following is a measure of a material's opposition to the flow of electric current?
Resistance
What is the SI unit of electrical resistance?
Ohm
What is the term for the flow of electric charge per unit time?
Current
What is the Faraday constant approximately equal to?
96485 C/mol
What is the quantity of electric charge transferred by one mole of electrons?
Faraday
What is the process of depositing a thin layer of metal onto a surface using electricity?
Electroplating
What is the term for the movement of ions in solution under the influence of an electric field?
Electrolysis
What is the unit of electric current?
Ampere
Which law states that the current flowing through a conductor is directly proportional to the voltage across it?
Ohm's law
What is the standard hydrogen electrode used as a reference in electrochemistry?
SHE
What is the symbol for standard electrode potential?
E°
Which factor does not affect the solubility of a solid solute in a liquid solvent?
Surface area
What is the term for a solution that has a low concentration of solute compared to solvent?
Dilute
What is the term for a solution that has a high concentration of solute compared to solvent?
Concentrated
What is the term for a solution that contains an equal amount of solute and solvent?
Equilibrium
What is the term for a solution that contains the maximum amount of solute that can dissolve at a given temperature?
Saturated
What is the term for the mass of solute in a given volume of solution, usually expressed in grams per liter (g/L)?
Concentration
What is the term for a solution that contains less solvent than solute at a given temperature?
Concentrated
What is the term for a solution that contains more solvent than solute at a given temperature?
Dilute
What is the term for the ratio of the amount of solute to the amount of solution, expressed as a percentage?
Mass percent
What is the term for a solution that contains less solute than solvent can normally dissolve at a given temperature?
Unsaturated
What is the process called when a solid directly changes to a gas without passing through the liquid state?
Sublimation
Which of the following is not a factor that affects the rate of dissolution of a solid in a liquid?
Pressure
What is the term for the separation of a solid from a solution?
Precipitation
What is the term for a solution that contains more solute than solvent can normally dissolve at a given temperature?
Unsaturated
What is the process called when a gas escapes from a liquid in a solution and forms bubbles?
Effervescence
Which of the following factors does not affect the solubility of a solid in a liquid?
Pressure
What happens to the solubility of most gases in water as temperature increases?
Decreases
What happens to the solubility of most solids in water as temperature increases?
Increases
What is the solubility of a gas in a liquid typically affected by?
Pressure
What type of solution is formed when no more solute can dissolve in a solvent at a given temperature?
Saturated
What is the term for a solution that contains equal amounts of solute and solvent at a given temperature?
Saturated
What is the term for a solution that contains less solute than it could dissolve at a given temperature?
Unsaturated
What is the solubility of a substance that only partially dissolves in a solvent at a given temperature?
Low
What is the solubility of a substance that dissolves completely in a solvent at a given temperature?
High
What type of solution contains more solute than would normally dissolve at that temperature?
Supersaturated
What is the process called when excess solute is added to a saturated solution, but it does not dissolve?
Precipitation
What is the term for a solution that can dissolve more solute at a given temperature?
Unsaturated
What is the term for a solution that has reached its maximum concentration of solute at a given temperature?
Saturated
Which of the following solutions has the lowest concentration?
0.1 M
Which of the following solutions has the highest concentration?
5 M
At which temperature does sulfur boil at normal atmospheric pressure?
444.6°C
What is the physical state of iodine at room temperature and normal atmospheric pressure?
Solid
At which temperature does water boil at a high altitude where atmospheric pressure is lower?
Below 100°C
What is the physical state of oxygen at a temperature of -218°C?
Liquid
What is the physical state of nitrogen at a temperature of -210°C?
Liquid
At which temperature does mercury freeze at normal atmospheric pressure?
-38.83°C
What is the physical state of carbon dioxide at a temperature of -78.5°C?
Solid
What is the physical state of water at a temperature of -10°C?
Solid
At which temperature does nitrogen freeze at normal atmospheric pressure?
-196°C
What is the physical state of oxygen at a temperature of -183°C?
Liquid
What is the physical state of helium at a temperature of -269°C?
Liquid
At which temperature does carbon dioxide freeze at normal atmospheric pressure?
-78.5°C
What is the physical state of sulfur dioxide (SO2) at room temperature and normal atmospheric pressure?
Gas
What is the physical state of argon at room temperature and normal atmospheric pressure?
Gas
At which temperature does nitrogen boil at normal atmospheric pressure?
-196°C
What is the physical state of ammonia (NH3) at room temperature and normal atmospheric pressure?
Gas
What is the physical state of hydrogen at a temperature of -253°C?
Gas
What is the physical state of sulfur at room temperature and normal atmospheric pressure?
Solid
What is the physical state of carbon at room temperature and normal atmospheric pressure?
Solid
At which temperature does ethanol (C2H5OH) boil at normal atmospheric pressure?
78.37°C
What is the physical state of water at a temperature of 50°C?
Liquid
What is the physical state of nitrogen at a temperature of -196°C?
Liquid
What is the physical state of helium at a temperature of -269°C?
Liquid
What is the physical state of bromine at room temperature and normal atmospheric pressure?
Liquid
At which temperature does oxygen freeze at normal atmospheric pressure?
-183°C
What is the physical state of ethanol (C2H5OH) at room temperature and normal atmospheric pressure?
Liquid
What is the physical state of iodine at room temperature and normal atmospheric pressure?
Solid
Which physical state of matter has a definite volume but takes the shape of its container?
Liquid
What is the physical state of neon at room temperature and normal atmospheric pressure?
Gas
What is the physical state of gold at room temperature and normal atmospheric pressure?
Solid
How many lone pairs of electrons are there in a molecule of methane (CH4)?
1
How many lone pairs of electrons are there in a molecule of water?
2
What is the shape of a nitrogen molecule (N2)?
Linear
What is the molecular geometry of carbon dioxide?
Linear
How many lone pairs of electrons are there in a molecule of carbon monoxide?
1
What is the shape of a carbon monoxide molecule?
Linear
What is the molecular geometry of water?
Bent
How many lone pairs of electrons are there in a molecule of carbon tetrachloride?
1
What is the shape of a carbon tetrachloride molecule?
Tetrahedral
What is the molecular geometry of ammonia?
Trigonal pyramidal
How many lone pairs of electrons are there in a molecule of methane?
1
What is the shape of a methane molecule?
Tetrahedral
What is the molecular geometry of carbon dioxide?
Linear
How many lone pairs of electrons are there in a molecule of water?
2
What is the shape of a nitrogen molecule (N2)?
Linear
What is the molecular geometry of carbon dioxide?
Linear
How many lone pairs of electrons are there in a molecule of carbon monoxide?
1
What is the shape of a carbon monoxide molecule?
Linear
What is the molecular geometry of water?
Bent
How many lone pairs of electrons are there in a molecule of carbon tetrachloride?
1
What is the shape of a carbon tetrachloride molecule?
Tetrahedral
What is the molecular geometry of ammonia?
Trigonal pyramidal
How many lone pairs of electrons are there in a molecule of methane?
1
What is the shape of a methane molecule?
Tetrahedral
What is the molecular geometry of carbon dioxide?
Linear
How many lone pairs of electrons are there in a molecule of water?
2
What is the shape of a nitrogen molecule (N2)?
Linear
What is the molecular geometry of carbon dioxide?
Linear
How many lone pairs of electrons are there in a molecule of carbon monoxide?
2
What is the shape of a carbon monoxide molecule?
Linear
What is the trend in boiling point down a group in the periodic table?
Increases
What is the trend in melting point across a period in the periodic table?
Increases
What is the chemical symbol for neon?
Ne
What is the period number of an element with atomic number 30?
4
Which group of elements is known as the noble gases?
Group 18
Which of the following elements is a nonmetal?
Oxygen
What is the chemical symbol for hydrogen?
H
Which element is located in Group 18 of the periodic table?
Argon
What is the trend in reactivity of halogens down a group in the periodic table?
Increases
What is the trend in reactivity of alkali metals down a group in the periodic table?
Increases
What is the trend in metallic character down a group in the periodic table?
Increases
What is the trend in metallic character across a period in the periodic table?
Decreases
What is the chemical symbol for calcium?
Ca
Which group of elements is known as the halogens?
Group 17
What is the period number of an element with atomic number 20?
4
Which of the following elements is a transition metal?
Copper
What is the chemical symbol for chlorine?
Cl
Which element is located in Period 4 and Group 14 of the periodic table?
Carbon
Which of the following elements is a metal?
Iron
What is the chemical symbol for sodium?
Na
Which group of elements is known as the alkaline earth metals?
Group 2
What is the trend in ionization energy down a group in the periodic table?
Decreases
What is the trend in ionization energy across a period in the periodic table?
Increases
What is the trend in electronegativity down a group in the periodic table?
Decreases
What is the trend in electronegativity across a period in the periodic table?
Increases
What is the trend in atomic radius down a group in the periodic table?
Increases
What is the trend in atomic radius across a period in the periodic table?
Decreases
What is the chemical symbol for mercury?
Hg
Which of the following elements is a metalloid?
Silicon
What is the period number of an element with atomic number 13?
3
What is the maximum number of electrons in the p subshell?
6
Who proposed the quantum mechanical model of the atom?
Werner Heisenberg
What is the electron configuration of sodium?
1s² 2s² 2p⁶ 3s¹
What is the electron configuration of oxygen?
1s² 2s² 2p⁴
What is the electron configuration of carbon?
1s² 2s² 2p²
What is the principal quantum number range for an electron in the s subshell?
1 to ∞
What is the principal quantum number range for an electron in the p subshell?
2 to ∞
What is the principal quantum number range for an electron in the d subshell?
3 to ∞
What is the magnetic quantum number range for an orbital in the s subshell?
-1 to +1
What is the magnetic quantum number range for an orbital in the p subshell?
-1 to +1
What is the magnetic quantum number range for an orbital in the d subshell?
-2 to +2
What is the shape of an f orbital?
Cloverleaf-shaped
What is the shape of a d orbital?
Dumbbell-shaped
What is the shape of a p orbital?
Dumbbell-shaped
What is the maximum number of electrons in the third shell?
18
What is the maximum number of electrons in the second shell?
8
What is the maximum number of electrons in the first shell?
2
What is the maximum number of electrons in an orbital?
2
Which quantum number determines the shape of an orbital?
Azimuthal (l)
Who proposed the wave mechanical model of the atom?
Erwin Schrödinger
What is the shape of an s orbital?
Spherical
Which of the following is not true about electrons?
They are negatively charged
What is the Bohr radius?
Distance from the nucleus to the electron in the first shell
Which of the following determines the mass of an atom?
Protons and neutrons
Which scientist discovered the neutron?
James Chadwick
Which subatomic particle has a negligible mass?
Electron
What is the mass number of an element?
Sum of protons and neutrons
What is the atomic number of an element?
Number of protons
Which of the following is not found in the nucleus?
Electron
Which subatomic particle is found in the nucleus?
Proton
Which of the following is a transition metal?
Nickel
What is the atomic number of helium?
2
Which of the following is a halogen?
Bromine
What is the chemical symbol for calcium?
Ca
What is the chemical formula for hydrochloric acid?
HCl
Which of the following is a noble gas?
Argon
What is the atomic number of nitrogen?
7
Which of the following is a metal?
Iron
What is the charge of a neutron?
1
Which of the following is an alkaline earth metal?
Magnesium
What is the chemical symbol for lead?
Pb
What is the chemical formula for carbon dioxide?
CO2
What is the pH value of a basic solution?
Above 7
Which of the following is a transition metal?
Copper
What is the atomic number of hydrogen?
1
Which of the following is a halogen?
Fluorine
What is the chemical symbol for mercury?
Hg
What is the chemical formula for sodium chloride?
NaCl
What is the pH value of an acidic solution?
Below 7
Which of the following is a metalloid?
Silicon
What is the charge of an electron?
-1
What is the chemical symbol for potassium?
K
What is the chemical formula for sulfuric acid?
H2SO4
Which of the following is a noble gas?
Neon
What is the atomic number of oxygen?
8
Which of the following is a nonmetal?
Oxygen
What is the chemical symbol for iron?
Fe
What is the chemical formula for ammonia?
NH3
Which of the following is an alkali metal?
Sodium
What is the charge of a proton?
1
