Assertion & Reason Test: Periodic Classification of Elements - 1

Question 1

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Smaller the size of an atom, greater is the electronegativity.

Reason (R): Electronegativity refers to the tendency of an atom to share electrons with other atoms.

Accepted Answer

Assertion (A) is true but reason (R) is false.

Answer

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

Answer

Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

Answer

Assertion (A) is false but reason (R) is true.

Question 2

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Noble gases are highly reactive.

Reason (R): Noble gases have stable closed shell electronic configuration.

Accepted Answer

Assertion (A) is false but reason (R) is true.

Answer

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

Answer

Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

Answer

Assertion (A) is true but reason (R) is false.

Question 3

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Sixth and seventh periods in the periodic table contain 14 elements.

Reason (R): In the periodic table, 14 elements of sixth and seventh periods are known as lanthanoids and actinoids.

Accepted Answer

Assertion (A) is false but reason (R) is true.

Answer

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

Answer

Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

Answer

Assertion (A) is true but reason (R) is false.

Question 4

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): The atomic and ionic radii generally decrease towards right in a period.

Reason (R): The ionisation enthalpy increases on moving towards the left in a period.

Accepted Answer

Assertion (A) is true but reason (R) is false.

Answer

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

Answer

Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

Answer

Assertion (A) is false but reason (R) is true.

Question 5

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Be and Al show some similar properties.

Reason (R): The metallic radius of Be is less than the metallic radius of Al.

Accepted Answer

Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

Answer

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

Answer

Assertion (A) is true but reason (R) is false.

Answer

Assertion (A) is false but reason (R) is true.

Question 6

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): In triad, the three elements have the same gaps of atomic masses.

Reason (R): Elements in a triad have similar properties.

Accepted Answer

Assertion (A) is false but reason (R) is true.

Answer

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

Answer

Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

Answer

Assertion (A) is true but reason (R) is false.

Question 7

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Mendeleev left the gap under aluminium and silicon and called these Eka-aluminium and Eka-silicon, respectively.

Reason (R): Dobereiner arranged elements on the basis of increasing atomic number.

Accepted Answer

Assertion (A) is true but reason (R) is false.

Answer

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

Answer

Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

Answer

Assertion (A) is false but reason (R) is true.

Question 8

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): According to Mendeleev, periodic properties of elements is a function of their atomic number.

Reason (R): Atomic number is equal to the number of protons.

Accepted Answer

Assertion (A) is false but reason (R) is true.

Answer

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

Answer

Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

Answer

Assertion (A) is true but reason (R) is false.

Question 9

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Mendeleev arranged elements in horizontal rows and vertical columns.

Reason (R): Mendeleev ignored the order of atomic weight thinking that the atomic measurements might be incorrect.

Accepted Answer

Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

Answer

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

Answer

Assertion (A) is true but reason (R) is false.

Answer

Assertion (A) is false but reason (R) is true.

Question 10

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : Mendeleev left the gap under aluminium and silicon and called these Eka-aluminium and Eka- silicon, respectively.

Reason : Dobereiner arranged elements on the basis of increasing atomic number.

Accepted Answer

Assertion (A) is true but reason (R) is false.

Answer

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

Answer

Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

Answer

Assertion (A) is false but reason (R) is true.

Periodic Classification of Elements - 1 - Free Assertion & Reason Questions

MCQ Practice Test & Solutions: Assertion & Reason Test: Periodic Classification of Elements - 1 (10 Questions)

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion (A): Noble gases are highly reactive.
Reason (R): Noble gases have stable closed shell electronic configuration.

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion (A): Be and Al show some similar properties.
Reason (R): The metallic radius of Be is less than the metallic radius of Al.

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion (A): In triad, the three elements have the same gaps of atomic masses.
Reason (R): Elements in a triad have similar properties.

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Periodic Classification of Elements - 1 - Free Assertion & Reason Questions

MCQ Practice Test & Solutions: Assertion & Reason Test: Periodic Classification of Elements - 1 (10 Questions)

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): Noble gases are highly reactive.Reason (R): Noble gases have stable closed shell electronic configuration.

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): Be and Al show some similar properties.Reason (R): The metallic radius of Be is less than the metallic radius of Al.

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion (A): In triad, the three elements have the same gaps of atomic masses.Reason (R): Elements in a triad have similar properties.

Class 10 Maharashtra SSC Board All Subjects

Class 10 Maharashtra SSC Board All Subjects

Top Courses for Class 10

About this Class 10 Practice Test

Explore more Class 10 Study Resources

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion (A): Noble gases are highly reactive.
Reason (R): Noble gases have stable closed shell electronic configuration.

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion (A): Be and Al show some similar properties.
Reason (R): The metallic radius of Be is less than the metallic radius of Al.

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion (A): In triad, the three elements have the same gaps of atomic masses.
Reason (R): Elements in a triad have similar properties.