10th Class Chemistry Complete Quiz is an important subject for MDCAT preparation, as it plays a central role in understanding properties, reactions, and the composition of matter. The 10th Class Chemistry Complete Quiz helps students in consolidating their knowledge of essential topics such as details of chemical reactions, organic chemistry, acids, bases, salts, and environmental chemistry. This quiz covers all types of questions from the syllabus, allowing students to develop an effective preparation strategy in both academic and medical entrance exams.
Key Topics in the 10th Class Chemistry Quiz
The 10th Class Chemistry Complete covers all major chapters, including chemical equilibrium, reaction kinetics, electrochemistry, and hydrocarbons. Students will come across questions on oxidation-reduction reactions, water treatment processes, polymers, and biochemistry—very vital for MDCAT Chemistry. The variety of multiple-choice questions (MCQs) in this quiz tests both the theoretical and practical aspects of chemistry, enabling students to apply the concepts they have studied in real life, therefore making them better problem solvers with concept clarity.
Quiz for Practice
The MDCAT Quiz for 10th Class Chemistry helps students in gaining better scores in the exams. It contains frequently asked questions, which resemble the actual exam pattern and help students get familiar with the nature of the questions. Regular practice of such quizzes enhances time management, accuracy, and critical thinking skills—all vital to excel in the MDCAT Chemistry section.
- Test Name: 10th 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
Students can also use free flashcards for quick revision of key concepts, formulas, and chemical reactions from the 10th Class Chemistry syllabus. These flashcards are a great tool for last-minute preparation, helping students memorize important chemical equations, periodic trends, and reaction mechanisms. By using flashcards, students can improve their retention and recall of critical information, ensuring they’re well-prepared for both board exams and entrance tests.
What is the main product of the cleaning products industry?
Cleaning products
Which industry produces chemicals used in the manufacture of cleaning products and disinfectants?
Cleaning products industry
What is the primary raw material used in the production of potassium hydroxide?
Potassium chloride
Which process is used to convert propylene into propylene oxide?
Oxidation
What is the main product of the rubber industry?
Rubber
Which industry produces chemicals used in the manufacture of rubber and tires?
Rubber industry
What is the primary raw material used in the production of hydrochloric acid?
Hydrogen chloride
Which process is used to convert benzene into ethylbenzene?
Alkylation
What is the main product of the adhesives industry?
Adhesives
Which industry produces chemicals used in the manufacture of adhesives and sealants?
Adhesives industry
What is the primary raw material used in the production of sulfur dioxide?
Sulfur dioxide
Which process is used to convert benzene into various petrochemical products?
Cracking
What is the main product of the cosmetics industry?
Cosmetics
Which industry produces chemicals used in the manufacture of cosmetics and personal care products?
Cosmetics industry
What is the primary raw material used in the production of nitric acid?
Ammonia
Which process is used to convert propylene into polypropylene?
Polymerization
What is the main product of the textile industry?
Textiles
Which industry produces chemicals used in the manufacture of textiles and fibers?
Textile industry
What is the primary raw material used in the production of sodium hydroxide?
Sodium chloride
Which process is used to convert propane or butane into propylene?
Dehydrogenation
What is the main product of the surfactant industry?
Surfactants
Which industry produces chemicals used in the manufacture of soaps and detergents?
Surfactant industry
What is the primary raw material used in the production of phosphoric acid?
Phosphate rock
Which process is used to convert ethylene into polyethylene?
Polymerization
What is the main product of the coatings industry?
Paints and coatings
Which industry produces chemicals used in the manufacture of paints and coatings?
Coatings industry
What is the primary raw material used in the production of chlorine?
Sodium chloride
Which process is used to convert natural gas into various petrochemical products?
Steam reforming
What is the main product of the polymer industry?
Polymers
Which industry is responsible for the production of polymers such as polyethylene and polypropylene?
Polymer industry
What is the primary source of nitrous oxide emissions?
Agricultural activities
Which pollutant is primarily responsible for mercury contamination in aquatic ecosystems?
Industrial emissions
What is the term for the process by which pollutants are removed from the atmosphere by dissolving in water droplets?
Wet deposition
What is the main source of cadmium pollution in the environment?
Industrial emissions
Which of the following is a primary source of light pollution?
Urbanization
What is the term for the process by which pollutants are released from a source into the environment?
Discharge
What is the main source of arsenic pollution in drinking water?
Natural deposits
Which pollutant is primarily responsible for acidification of aquatic ecosystems?
Sulfur dioxide
What is the term for the process by which pollutants are broken down by sunlight?
Photodegradation
What is the main source of dioxin pollution in the environment?
Combustion processes
Which of the following is a primary source of noise pollution?
Transportation
What is the term for the process by which pollutants are transferred from one part of the environment to another?
Transport
What is the main source of phosphorus pollution in aquatic ecosystems?
Agricultural runoff
Which pollutant is primarily responsible for depletion of the ozone layer?
Chlorofluorocarbons
What is the term for the process by which pollutants are absorbed and retained by soil particles?
Adsorption
What is the main source of volatile organic compound (VOC) emissions?
Industrial processes
Which of the following is a primary source of soil pollution?
Industrial waste
What is the term for the process by which pollutants are taken up by plants through their roots?
Phytoremediation
What is the main source of methane emissions?
Agriculture
Which pollutant is primarily responsible for global warming?
Carbon dioxide
What is the term for the process by which pollutants settle out of the atmosphere onto surfaces?
Deposition
What is the main source of carbon monoxide emissions?
Vehicle exhaust
Which of the following is a primary source of water pollution?
Industrial discharge
What is the term for the process by which chemicals accumulate in the tissues of organisms at higher trophic levels?
Biomagnification
What is the main source of nitrogen oxide emissions?
Vehicle emissions
Which pollutant is primarily responsible for smog formation?
Nitrogen oxides
What is the term for the release of pollutants into the atmosphere from vehicles and industrial facilities?
Emissions
What is the main source of sulfur dioxide emissions?
Burning fossil fuels
Which of the following is a secondary air pollutant?
Ozone
What is the term for the process by which chemicals accumulate in the fatty tissues of organisms?
Bioaccumulation
What is the name of the layer of the atmosphere where most commercial airliners fly?
Stratosphere
What is the process by which carbon dioxide is removed from the atmosphere and stored in plants?
Photosynthesis
What gas is responsible for the majority of Earth's atmospheric temperature regulation?
Water vapor
What is the name of the boundary between the thermosphere and the exosphere?
Exobase
What gas is released from vehicles and contributes to air pollution and respiratory problems?
Carbon monoxide
What layer of the atmosphere contains the majority of atmospheric water vapor?
Troposphere
What is the process by which atmospheric gases trap heat and warm the Earth's surface?
Greenhouse effect
What gas is commonly used in aerosol cans and contributes to ozone depletion?
Hydrochlorofluorocarbons
What is the name of the layer of the atmosphere where the International Space Station orbits?
Thermosphere
What layer of the atmosphere contains the ozone hole?
Stratosphere
What is the process by which water changes from a liquid to a gas at the Earth's surface?
Evaporation
What gas is responsible for the majority of atmospheric pressure at sea level?
Nitrogen
What is the name of the layer of the atmosphere where temperatures increase with altitude?
Stratosphere
What gas is commonly used in refrigerants and contributes to ozone depletion?
Chlorofluorocarbons
What layer of the atmosphere contains the majority of Earth's clouds?
Troposphere
What is the process by which sunlight is absorbed by the Earth's surface and re-emitted as heat?
Radiation
What gas is released during volcanic eruptions and contributes to atmospheric pollution?
Sulfur dioxide
What layer of the atmosphere contains the highest concentration of ozone?
Stratosphere
What is the primary source of carbon dioxide emissions into the atmosphere?
Combustion
What gas is commonly used in the ozone layer to break down ozone-depleting substances?
Chlorine
What is the name of the layer of the atmosphere where most weather balloons operate?
Stratosphere
What is the name of the boundary between the stratosphere and the mesosphere?
Stratopause
What layer of the atmosphere contains the auroras?
Thermosphere
What is the process by which water vapor returns to the Earth's surface as precipitation?
Precipitation
What gas is responsible for the blue color of the sky?
Nitrogen
What layer of the atmosphere contains the ionosphere?
Thermosphere
What is the process by which plants release oxygen into the atmosphere?
Photosynthesis
What is the name of the layer of the atmosphere where most meteors burn up?
Mesosphere
What gas is primarily responsible for the greenhouse effect?
Carbon dioxide
What is the name of the boundary between the troposphere and the stratosphere?
Tropopause
What is the primary function of phospholipids in cell membranes?
Forming lipid bilayer
What is the main function of carbohydrates in the body?
Energy
What is the term for a molecule that binds to an enzyme and decreases its activity?
Inhibitor
Which of the following factors can affect enzyme activity?
Temperature
What is the region on an enzyme where the substrate binds?
Active site
Which of the following is not a characteristic of enzymes?
Change in pH
What is the primary function of enzymes?
Catalysts
Which of the following is a characteristic of RNA?
Single-stranded
What is the term for the sequence of three nucleotides on mRNA that codes for a specific amino acid?
Codon
Which of the following is a function of RNA?
Protein synthesis
What is the molecule that carries amino acids to the ribosome during protein synthesis?
tRNA
What is the process of decoding mRNA into a protein called?
Translation
Which of the following is not involved in protein synthesis?
Glycolysis
What is the term for a change in the DNA sequence?
Mutation
Which nucleotide base pairs with adenine in DNA?
Thymine
What is the process of copying DNA into RNA called?
Transcription
Which of the following is not a type of RNA?
tRNA
What is the structure of DNA described as?
Double helix
Which of the following is not a function of RNA?
Storing genetic information
What is the primary function of DNA?
Genetic information
Which of the following is not a part of a nucleotide?
Amino group
What is the process of breaking down ATP into ADP and inorganic phosphate?
Hydrolysis
What is the main function of ATP in the cell?
Energy currency
Which of the following is not a component of a nucleotide?
Fatty acid
Which molecule serves as the universal energy currency in cells?
ATP
What is the process of converting glucose into ATP called?
Cellular respiration
Which of the following is not a nucleotide base found in DNA?
Uracil
Which nucleic acid is responsible for carrying genetic information?
DNA
What is the building block of nucleic acids?
Nucleotide
What is the main function of nucleic acids?
Genetic information
What is the name of the compound with the molecular formula 𝐶30𝐻62C30H62?
Triacontane
What is the general formula for alkynes?
𝐶𝑛𝐻2𝑛−2CnH2n−2
How many carbon atoms are present in pentadiene?
5
Which of the following is an example of a branched alkene?
3-Methylpentene
What is the name of the compound with the molecular formula 𝐶24𝐻50C24H50?
Tetracosane
What is the general formula for aromatic hydrocarbons?
𝐶𝑛𝐻2𝑛−6CnH2n−6
How many carbon atoms are present in decene?
10
Which of the following is an example of a cyclic alkane?
Cyclopentane
What is the name of the compound with the molecular formula 𝐶20𝐻42C20H42?
Eicosane
What is the general formula for aromatic hydrocarbons?
𝐶𝑛𝐻2𝑛−6CnH2n−6
How many carbon atoms are present in benzene?
6
Which of the following is an example of a straight-chain alkene?
Octene
What is the name of the compound with the molecular formula 𝐶16𝐻34C16H34?
Hexadecane
What is the general formula for aromatic hydrocarbons?
𝐶𝑛𝐻2𝑛−6CnH2n−6
How many carbon atoms are present in propyne?
3
Which of the following is an example of a cyclic alkene?
Cyclohexene
What is the name of the compound with the molecular formula 𝐶12𝐻26C12H26?
Dodecane
What is the general formula for aromatic hydrocarbons?
𝐶𝑛𝐻2𝑛−6CnH2n−6
How many carbon atoms are present in heptyne?
7
Which of the following is an example of a diene?
Butadiene
What is the name of the compound with the molecular formula 𝐶10𝐻22C10H22?
Decane
What is the general formula for aromatic hydrocarbons?
𝐶𝑛𝐻2𝑛−6CnH2n−6
How many carbon atoms are present in octyne?
8
Which of the following is an example of a straight-chain alkane?
Hexane
What is the name of the compound with the molecular formula 𝐶5𝐻12C5H12?
Pentane
What is the general formula for cycloalkenes?
𝐶𝑛𝐻2𝑛CnH2n
How many carbon atoms are present in butene?
4
Which of the following is an example of a branched alkane?
2-Methylpropane
What is the name of the compound with the molecular formula 𝐶8𝐻18C8H18?
Octane
What is the general formula for cycloalkanes?
𝐶𝑛𝐻2𝑛CnH2n
Which of the following is an example of a thiol?
Ethanethiol
Which functional group is present in thiols?
Thiol
What is the general formula for thiols?
𝑅𝑆𝐻RSH
What is the name of the functional group −𝑆𝐻−SH?
Thiol
Which of the following is an example of an ether?
Dimethyl ether
Which functional group is present in ethers?
Alkoxy
What is the general formula for ethers?
𝑅𝑂𝑅′ROR′
What is the name of the functional group −𝑂𝑅−OR?
Alkoxy
Which of the following is an example of a nitro compound?
Nitrobenzene
What is the general formula for alkyl halides?
𝑅−𝑋R−X
Which functional group is present in alkyl halides?
Halide
What is the general formula for nitro compounds?
𝑅𝑁𝑂2RNO2
What is the name of the functional group −𝑁𝑂2−NO2?
Nitro
Which of the following is an example of a nitrile?
Acetonitrile
What is the general formula for amides?
𝑅𝐶𝑂𝑁𝐻2RCONH2
Which functional group is present in amides?
Amide
What is the general formula for nitriles?
𝑅𝐶𝑁RCN
What is the name of the functional group −𝐶𝑁−CN?
Nitrile
Which of the following is an example of an ester?
Ethyl acetate
Which functional group is present in esters?
Carbonyl
What is the general formula for esters?
𝑅𝐶𝑂𝑂𝑅′RCOOR′
What is the name of the functional group −𝐶𝑂𝐶𝑙−COCl?
Acyl chloride
Which of the following is an example of an aldehyde?
Methanal
What is the general formula for carboxylic acids?
𝐶𝑛𝐻2𝑛+1𝐶𝑂𝑂𝐻CnH2n+1COOH
Which functional group is present in carboxylic acids?
Carboxyl
What is the general formula for aldehydes?
𝐶𝑛𝐻2𝑛+2𝑂CnH2n+2O
What is the name of the functional group −𝐶𝑂−CO?
Carbonyl
Which of the following is an example of a saturated hydrocarbon?
Propane
What is the general formula for ketones?
𝐶𝑛𝐻2𝑛+2𝑂CnH2n+2O
Which functional group is present in ketones?
Carbonyl
What is the product of the reaction between hydrochloric acid and calcium hydroxide?
Water (H2O)
The pH of a solution with a hydrogen ion concentration of 10−610−6 M is _______.
6
Which of the following is a characteristic of acids?
Turn blue litmus paper red
Which acid is found in stomach acid?
Hydrochloric acid
A substance that releases hydroxide ions (𝑂𝐻−OH−) in water is classified as a _______.
Base
What is the product of the reaction between sulfuric acid and sodium hydroxide?
Water (H2O)
What is the pH of a solution with a hydrogen ion concentration of 10−1210−12 M?
2
Which of the following is a weak base?
NH3
Which of the following is a strong acid?
HCl
What is the chemical formula for phosphoric acid?
H3PO4
The pH scale is a logarithmic scale, meaning that each unit change in pH represents a _______ change in hydrogen ion concentration.
10-fold
Which of the following is a characteristic of bases?
Turn red litmus paper blue
Which acid is found in citrus fruits?
Citric acid
A substance that neither releases hydrogen ions (𝐻+H+) nor hydroxide ions (𝑂𝐻−OH−) in water is classified as a _______.
Salt
What is the product of the reaction between hydrochloric acid and magnesium hydroxide?
Water (H2O)
What is the pH of a solution with a hydroxide ion concentration of 10−710−7 M?
7
Which of the following is a weak base?
NH3
What is the chemical formula for nitric acid?
HNO3
Which substance is produced when an acid reacts with a metal?
Hydrogen gas (H2)
What is the product of the reaction between sulfuric acid and potassium hydroxide?
Water (H2O)
The pH of a solution with a hydrogen ion concentration of 10−910−9 M is _______.
9
Which of the following is a characteristic of acids?
Sour taste
Which base is commonly found in oven cleaners?
Sodium hydroxide
A substance that releases hydrogen ions (𝐻+H+) in water is classified as a _______.
Acid
What is the product of the reaction between nitric acid and potassium hydroxide?
Water (H2O)
What is the pH of a solution with a hydroxide ion concentration of 10−1010−10 M?
4
Which of the following is a strong base?
NaOH
Which of the following is a weak acid?
CH3COOH
What is the chemical formula for sulfuric acid?
H2SO4
The pH scale measures the concentration of _______ ions in a solution.
Hydrogen (H^+)
Which factor does not affect the position of equilibrium?
Surface area
Which statement about equilibrium constants is incorrect?
A larger 𝐾𝑐Kc value indicates a greater concentration of reactants at equilibrium
In a reaction mixture at equilibrium, if the pressure is increased, the volume will _______.
Decrease
The equilibrium constant (𝐾𝑐Kc) for a reaction at a certain temperature is 1.5. What does this indicate about the reaction?
The products are favored at equilibrium
Which statement about Le Chatelier's principle is true?
It applies to reactions in both directions
What happens to the equilibrium constant (𝐾𝑐Kc) for a reaction when the temperature is increased?
Increases
Which factor does not affect the equilibrium constant (𝐾𝑐Kc)?
Volume
In the equation: 2𝐻2(𝑔)+𝑂2(𝑔)⇌2𝐻2𝑂(𝑔)2H2(g)+O2(g)⇌2H2O(g), if the pressure of 𝐻2H2 is increased, the equilibrium will shift _______.
Right
If the concentration of a product is increased at equilibrium, the equilibrium will shift _______ to counteract the change.
Right
What is the effect of increasing the pressure on a gaseous reaction mixture at equilibrium?
Shifts the equilibrium to the side with fewer moles of gas
For the reaction: 2𝑆𝑂2(𝑔)+𝑂2(𝑔)⇌2𝑆𝑂3(𝑔)2SO2(g)+O2(g)⇌2SO3(g), if the concentration of 𝑆𝑂3SO3 is decreased, the equilibrium will shift _______.
Right
Which statement about the equilibrium constant (𝐾𝑐Kc) is incorrect?
It is temperature-dependent
A decrease in temperature will shift the equilibrium _______ for an exothermic reaction.
Left
What is the effect of adding a catalyst to a reaction mixture at equilibrium?
Increases the rate of the forward and reverse reactions equally
Which of the following statements is true regarding the equilibrium constant expression?
The coefficients in the balanced equation become the exponents in the expression
What effect does adding an inert gas to a reaction mixture at constant volume have on the equilibrium?
No effect
For the reaction: 2𝑁𝑂2(𝑔)⇌𝑁2𝑂4(𝑔)2NO2(g)⇌N2O4(g), if the concentration of 𝑁2𝑂4N2O4 is increased, the equilibrium will shift _______.
Right
If the concentration of a reactant is decreased at equilibrium, the equilibrium will shift _______ to counteract the change.
Right
Which of the following factors affects only the rate of reaction and not the position of equilibrium?
Catalyst
In a reaction mixture at equilibrium, if the volume is increased, the pressure will _______.
Decrease
An increase in temperature will shift the equilibrium _______ for an exothermic reaction.
Right
Which statement about the equilibrium constant (𝐾𝑐Kc) is correct?
It is unitless
Which factor does not affect the position of equilibrium?
Catalyst
Which statement about equilibrium constants is true?
A larger 𝐾𝑐Kc value indicates a greater concentration of products at equilibrium
The equilibrium constant (𝐾𝑐Kc) for the reaction: 𝐴+𝐵⇌𝐶+𝐷A+B⇌C+D is 25. What does this indicate about the reaction at equilibrium?
The reaction is product-favored
In a reaction at equilibrium, the rate of the forward reaction is _______ the rate of the reverse reaction.
Equal to
The equilibrium constant expression does not include _______.
Solids
Which of the following statements is true for an endothermic reaction at equilibrium?
Increasing the temperature shifts the equilibrium to the left
In the equation: 𝑁2(𝑔)+3𝐻2(𝑔)⇌2𝑁𝐻3(𝑔)N2(g)+3H2(g)⇌2NH3(g), if the concentration of 𝑁2N2 is increased, the equilibrium will shift _______.
Right
If the volume of a gaseous reaction mixture is decreased, what happens to the pressure?
Increases
