CBSE Class 11 Chemistry Part 1 by Pavan | Practice Test to Test Your Knowledge
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  2. Practice Tests
  3. CBSE Class 11 Chemistry Part 1
CBSE Class 11 Chemistry Part 1

CBSE Class 11 Chemistry Part 1

Complete mock test covering Atomic Structure, Chemical Bonding, and Periodic Classification. Features chemical equations, theoretical concepts, and practical applications.

2025-07-17
Pavan Pavan
CBSE Class 11 Chemistry Grade 11

Duration

30 min

Questions

30

Marking

Negative

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Questions Preview

What is the branch of science that studies the preparation, properties, structure, and reactions of material substances?

A
Physics
B
Chemistry
C
Biology
D
Geology

Which ancient Indian text mentions the preparation of sulphuric acid, nitric acid, and oxides of copper, tin, and zinc?

A
Rigveda
B
Charaka Samhita
C
Arthashastra
D
Sushruta Samhita

Who proposed the atomic theory that all matter consists of indivisible atoms?

A
John Dalton
B
Democritus
C
Albert Einstein
D
Marie Curie

Which of the following is an example of a heterogeneous mixture?

A
Salt solution
B
Air
C
Sand and water
D
Sugar solution

What is the mole concept used for in chemistry?

A
Measuring temperature
B
Counting entities at the microscopic level
C
Measuring the density of solids
D
Determining volume

Which of the following statements is true according to the Law of Definite Proportions?

A
A given compound always contains exactly the same proportion of elements by weight.
B
Elements combine in different proportions to form compounds.
C
The composition of compounds varies with temperature.
D
The composition of compounds is not fixed and changes with time.

What is the relationship between temperature and the three states of matter?

A
Temperature decreases in solids, increases in liquids, and has no effect on gases.
B
Temperature changes affect the physical state of matter, causing transitions between solid, liquid, and gas.
C
Temperature affects only liquids and gases.
D
Temperature has no effect on solids.

Which of the following is NOT a characteristic property of solids?

A
Definite shape
B
Definite volume
C
Flowability
D
Rigid structure

What is the main distinction between an element and a compound?

A
An element contains atoms of one type, while a compound contains atoms of more than one type in a fixed ratio.
B
An element can be decomposed chemically, but a compound cannot.
C
An element contains molecules, whereas a compound only contains atoms.
D
Compounds are composed of atoms of the same type.

Who is credited with developing the first atomic theory in the 19th century?

A
Marie Curie
B
Niels Bohr
C
John Dalton
D
Ernest Rutherford

Which ancient text described methods for the extraction of metals like gold, silver, and copper?

A
Arthashastra
B
Charaka Samhita
C
Rasratnakar
D
Sushruta Samhita

What type of mixture has a uniform composition throughout?

A
Heterogeneous mixture
B
Homogeneous mixture
C
Pure substance
D
Solution

In which state of matter do the particles have the greatest freedom of movement?

A
Solid
B
Liquid
C
Gas
D
Plasma

What is the main feature of an empirical formula?

A
It shows the exact number of atoms in a molecule.
B
It shows the simplest whole-number ratio of elements in a compound.
C
It shows the molecular structure of a compound.
D
It gives the molecular weight of a compound.

Which of the following is a correct application of Avogadro's law?

A
Equal volumes of gases at the same temperature and pressure contain different numbers of molecules.
B
Equal volumes of gases at the same temperature and pressure contain equal numbers of molecules.
C
The volume of gas increases with increasing pressure at constant temperature.
D
The volume of gas decreases with decreasing temperature at constant pressure.

What is the process of converting one unit into another called?

A
Dimensional analysis
B
Stoichiometry
C
Scientific notation
D
Conversion factor method

Which of the following is the SI unit for temperature?

A
Celsius
B
Kelvin
C
Fahrenheit
D
Joule

In dimensional analysis, which quantity is used to convert units?

A
Conversion factor
B
Exponent
C
Scientific constant
D
Atomic number

Which element's atomic mass is used as the standard in modern atomic mass units?

A
Oxygen
B
Carbon-12
C
Hydrogen
D
Nitrogen

What is the unit of force in the SI system?

A
Newton
B
Joule
C
Watt
D
Pascal

What is the primary purpose of stoichiometry in chemistry?

A
To measure the temperature of a reaction
B
To calculate the quantities of reactants and products involved in a chemical reaction
C
To determine the pH of solutions
D
To measure the volume of a gas

Which of the following is an example of a chemical property?

A
Density
B
Melting point
C
Reactivity with acids
D
Color

Which law states that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules?

A
Boyle's Law
B
Charles's Law
C
Avogadro's Law
D
Gay Lussac's Law

Which element's isotope is used as the standard for atomic mass in the modern system?

A
Carbon-12
B
Hydrogen-1
C
Oxygen-16
D
Carbon-14

What does the term 'mole' refer to in chemistry?

A
The mass of one molecule
B
The number of molecules in a substance
C
The number of atoms in a molecule
D
The amount of a substance in grams

What does a balanced chemical equation represent?

A
The physical states of the reactants and products
B
The volume of the substances involved
C
The relative number of molecules or moles of reactants and products
D
The temperature of the reaction

What is the main difference between an empirical formula and a molecular formula?

A
The empirical formula represents the exact number of atoms, while the molecular formula represents the simplest ratio.
B
The molecular formula represents the simplest ratio, while the empirical formula represents the exact number of atoms.
C
The empirical formula is for ionic compounds, and the molecular formula is for covalent compounds.
D
There is no difference between empirical and molecular formulas.

Which of the following is a correct example of a pure substance?

A
Saltwater
B
Air
C
Oxygen gas
D
Sand

Which of the following is true about gases according to the Kinetic Molecular Theory?

A
Gas particles are in constant motion and have negligible volume.
B
Gas particles have fixed positions and do not move.
C
Gas particles move slowly and attract each other.
D
Gas particles are at rest and only vibrate.

What does the Law of Conservation of Mass state?

A
Matter can be created or destroyed during chemical reactions.
B
The mass of the reactants equals the mass of the products in a chemical reaction.
C
The mass of the products is greater than the mass of the reactants.
D
Mass can be converted into energy.