Revise chemistry fundamentals with Basic Concept MCQs covering mole concepts, stoichiometry, and chemical equations. These Chapter 1 quizzes are ideal for 11th Class Chemistry students preparing for exams.
What is the atomic number of carbon?
a) 5
b) 6
c) 7
d) 8
The mass number of an atom is equal to the total number of:
a) Electrons
b) Protons
c) Neutrons
d) Nucleons
Which subatomic particle has a positive charge?
a) Electron
b) Proton
c) Neutron
d) Nucleus
What is the chemical symbol for gold?
a) Au
b) Ag
c) Fe
d) Hg
The smallest unit of an element that retains its properties is called:
a) Molecule
b) Compound
c) Atom
d) Ion
Which of the following is a noble gas?
a) Nitrogen
b) Oxygen
c) Helium
d) Carbon
The chemical formula of water is:
a) H2O
b) CO2
c) NH3
d) CH4
The process of gaining electrons is called:
a) Oxidation
b) Reduction
c) Combustion
d) Sublimation
What is the valency of an element that forms a monovalent ion?
a) 1
b) 2
c) 3
d) 4
The SI unit of temperature is:
a) Kelvin
b) Celsius
c) Fahrenheit
d) Rankine
Which state of matter has a definite shape and volume?
a) Solid
b) Liquid
c) Gas
d) Plasma
The chemical formula for methane is:
a) CH4
b) CO2
c) H2O
d) NH3
The atomic mass of an element is determined by the number of:
a) Electrons
b) Protons
c) Neutrons
d) Nucleons
What is the chemical symbol for iron?
a) Au
b) Ag
c) Fe
d) Hg
The particles present in the nucleus of an atom are:
a) Electrons and protons
b) Electrons and neutrons
c) Protons and neutrons
d) Protons and nucleons
Which of the following is a transition metal?
a) Sodium
b) Potassium
c) Copper
d) Calcium
The chemical formula of carbon dioxide is:
a) CO2
b) H2O
c) NH3
d) CH4
The process of losing electrons is called:
a) Oxidation
b) Reduction
c) Combustion
d) Sublimation
What is the valency of an element that forms a divalent ion?
a) 1
b) 2
c) 3
d) 4
The SI unit of mass is:
a) Kilogram
b) Gram
c) Pound
d) Ounce
Which state of matter has a definite volume but takes the shape of its container?
a) Solid
b) Liquid
c) Gas
d) Plasma
The chemical formula for water is:
a) H2O
b) CO2
c) NH3
d) CH4
The atomic number of an element is determined by the number of:
a) Electrons
b) Protons
c) Neutrons
d) Nucleons
What is the chemical symbol for silver?
a) Au
b) Ag
c) Fe
d) Hg
The particles present in the nucleus of an atom are:
a) Electrons and protons
b) Electrons and neutrons
c) Protons and neutrons
d) Protons and nucleons
Which of the following is an alkaline earth metal?
a) Sodium
b) Potassium
c) Copper
d) Calcium
The chemical formula of ammonia is:
a) CO2
b) H2O
c) NH3
d) CH4
The process of gaining electrons is called:
a) Oxidation
b) Reduction
c) Combustion
d) Sublimation
What is the valency of an element that forms a trivalent ion?
a) 1
b) 2
c) 3
d) 4
The SI unit of time is:
a) Second
b) Minute
c) Hour
d) Day
Which state of matter has neither a definite shape nor a definite volume?
a) Solid
b) Liquid
c) Gas
d) Plasma
The chemical formula for carbon tetrachloride is:
a) CO2
b) H2O
c) CCl4
d) CH4
The atomic mass of an element is determined by the number of:
a) Electrons
b) Protons
c) Neutrons
d) Nucleons
What is the chemical symbol for mercury?
a) Au
b) Ag
c) Fe
d) Hg
The particles present in the nucleus of an atom are:
a) Electrons and protons
b) Electrons and neutrons
c) Protons and neutrons
d) Protons and nucleons
Which of the following is an alkali metal?
a) Sodium
b) Potassium
c) Copper
d) Calcium
The chemical formula of carbon monoxide is:
a) CO2
b) H2O
c) CO
d) CH4
The process of losing electrons is called:
a) Oxidation
b) Reduction
c) Combustion
d) Sublimation
What is the valency of an element that forms a tetravalent ion?
a) 1
b) 2
c) 3
d) 4
The SI unit of length is:
a) Meter
b) Centimeter
c) Kilometer
d) Mile
Which state of matter is the most common in the universe?
a) Solid
b) Liquid
c) Gas
d) Plasma
The chemical formula for methane is:
a) CH4
b) CO2
c) H2O
d) NH3
The atomic number of an element is determined by the number of:
a) Electrons
b) Protons
c) Neutrons
d) Nucleons
What is the chemical symbol for gold?
a) Au
b) Ag
c) Fe
d) Hg
The particles present in the nucleus of an atom are:
a) Electrons and protons
b) Electrons and neutrons
c) Protons and neutrons
d) Protons and nucleons
Which of the following is a noble gas?
a) Nitrogen
b) Oxygen
c) Helium
d) Carbon
The chemical formula of water is:
a) H2O
b) CO2
c) NH3
d) CH4
The process of gaining electrons is called:
a) Oxidation
b) Reduction
c) Combustion
d) Sublimation
What is the valency of an element that forms a monovalent ion?
a) 1
b) 2
c) 3
d) 4
The SI unit of temperature is:
8
a) Kelvin
b) Celsius
c) Fahrenheit
d) Rankine
Which state of matter has a definite shape and volume?
a) Solid
b) Liquid
c) Gas
d) Plasma
The chemical formula for methane is:
a) CH4
b) CO2
c) H2O
d) NH3
The atomic mass of an element is determined by the number of:
a) Electrons
b) Protons
c) Neutrons
d) Nucleons
What is the chemical symbol for iron?
a) Au
b) Ag
c) Fe
d) Hg
The particles present in the nucleus of an atom are:
a) Electrons and protons
b) Electrons and neutrons
c) Protons and neutrons
d) Protons and nucleons
Which of the following is a transition metal?
a) Sodium
b) Potassium
c) Copper
d) Calcium
The chemical formula of carbon dioxide is:
a) CO2
b) H2O
c) NH3
d) CH4
The process of losing electrons is called:
a) Oxidation
b) Reduction
c) Combustion
d) Sublimation
What is the valency of an element that forms a divalent ion?
a) 1
b) 2
c) 3
d) 4
The SI unit of mass is:
a) Kilogram
b) Gram
c) Pound
d) Ounce
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