West Bengal Police Constable Special Mock Test

Chemistry - Structure of Atom

1 / 10

1) What is the maximum number of electrons that can be accommodated in a subshell with azimuthal quantum number l=2?

A) 6

B) 10

C) 14

D) 18

2 / 10

2) What happens to an atom if it loses an electron?

A) It becomes radioactive

B) It becomes a different element

C) It becomes positively charged

D) It becomes negatively charged

3 / 10

3) What is an atom?

A) A type of molecule

B) The smallest unit of matter

C) A subatomic particle

D) A type of cell

4 / 10

4) What is the atomic number of an element?

A) The number of protons in an atom

B) The number of electrons in an atom

C) The number of isotopes in an atom

D) The number of neutrons in an atom

5 / 10

5) In the context of atomic orbitals, which of the following best describes a 'node'?

A) A region of positive charge

B) A point of maximum electron density

C) A point with maximum probability of finding an electron

D) A region with no probability of finding an electron

6 / 10

6) Who proposed the quantum mechanical model of the atom?

A) Ernest Rutherford

B) Niels Bohr

C) James Chadwick

D) Marie Curie

7 / 10

7) What is the mass number of an element?

A) The number of neutrons in an atom

B) The number of protons in an atom

C) The number of electrons in an atom

D) The number of isotopes in an atom

8 / 10

8) Which electron configuration of an atom indicates that it is in an excited state?

A) 1s²2s²2p⁶3s¹

B) 1s²2s²2p⁶

C) 1s²2s²2p⁶3s²

D) 1s²2s²2p¹

9 / 10

9) In which of the following cases will an electron transition result in the absorption of a photon?

A) An electron moves from n=1 to n=1

B) An electron moves from n=3 to n=2

C) An electron moves from n=2 to n=3

D) An electron remains in the same state

10 / 10

10) What is the implication of Hund's Rule in terms of electron configuration for atoms in the same subshell?

A) None of the above

B) Electrons distribute singly among orbitals before pairing

C) Electrons fill orbitals with paired spins first

D) Electrons fill from lowest to highest energy levels

Your score is

Curriculum

Chemistry (Structure of Atom পরমাণুর গঠন)

Report a question

Modal title