Practice Atomic Structure – GK Quiz with Answers – Level 2

One mole of a substance contains about how many particles?

Match List-I with List-II.

Select the correct answer using the codes given below.

The atomic mass unit is defined as:

Arrange the following models of the atom in the order in which they were proposed.

1. Electrons revolve in fixed energy shells K, L, M, N

2. Atom is a positive sphere with electrons embedded in it

3. A tiny nucleus at the centre with electrons moving around it

Select the correct chronological order.

Consider the following statements about Rutherford's work:

1. His alpha-particle scattering experiment showed that an atom has a tiny nucleus.

2. His model successfully explained the stability of the atom.

Which of the statements given above is/are correct?

Using the 2n^2 rule, what is the maximum number of electrons the M shell (n = 3) can hold?

Calcium-40 and argon-40 are examples of:

Which one of the following pairs of isotope and use is correctly matched?

Find the odd one out on the basis of electric charge.

The discovery of the positively charged sub-atomic particle is linked with the study of canal rays. Who is credited with this discovery?