Structure Of The Atom Mock Tests

28 questions available

Structure Of The Atom Mock Test 1

Questions: 28

Sample Questions

Class 9 Science

An element has electronic configuration 2, 8, 4. To which group of the periodic table does it belong?

A Group 4

B Group 14

C Group 4

D Group 18

Class 9 Science

The atomic mass of an element is the weighted average of the masses of its:

A Isotopes

B Isobars

C Ions

D Elements

Class 9 Science

An element X has electronic configuration 2, 8, 7. To which group of the periodic table does it belong?

A Group 7

B Group 17

C Group 7A only, not Group 17

D Group 8

Class 9 Science

Which of the following statements about isotopes is correct?

A Isotopes have different atomic numbers but same mass number

B Isotopes have same atomic number but different mass number

C Isotopes have different atomic and mass numbers

D Isotopes have same number of neutrons

Class 9 Science

Isotopes of an element differ in the number of:

A Protons

B Electrons

C Neutrons

D Protons and electrons

Class 9 Science

Which of the following statements about isotopes is correct?

A Isotopes have different chemical properties

B Isotopes have different physical properties

C Isotopes have different number of protons

D Isotopes always have equal number of neutrons

Class 9 Science

Rutherford's alpha-particle scattering experiment proved that:

A Atoms are neutral

B The nucleus is positively charged and very small

C Electrons revolve in orbits

D Atoms have neutrons

Class 9 Science

Isotopes of an element have:

A Same mass number, different atomic number

B Same atomic number, different mass number

C Same number of neutrons

D Same number of protons and neutrons

Comments

No comments yet. Be the first to share your thoughts!