Class 11 Chemistry Quiz

What are elements?

• Randomly arranged particles

• Compounds of various atoms

• Pure substances with specific properties

• Mixtures of different substances

What is the smallest unit of an element?

• Atom

• Molecule

• Compound

• Mixture

What particles are found in the nucleus of an atom?

• Protons and electrons

• Neutrons and electrons

• Protons and neutrons

• Electrons and protons

What defines an element?

• Number of atoms

• Number of protons

• Number of neutrons

• Number of electrons

Which force holds protons together in the nucleus?

• Electric Force

• Strong Nuclear Force

• Magnetic Force

• Gravitational Force

What is a quark?

• A subatomic particle

• A type of atom

• A type of element

• A molecule

What is the chemical symbol for lead?

• Pl

• Pb

• Ld

• Le

Why do protons and electrons attract each other?

• They are both in the nucleus

• They have no charge

• They have opposite charges

• They have the same charge

What is the charge of a neutron?

• Variable

• Neutral

• Negative

• Positive

Which particle determines the chemical properties of an element?

• Quark

• Electron

• Proton

• Neutron