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.

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

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

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

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

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.

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

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

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

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

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.

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

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

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

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

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.

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

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

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

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

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.

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

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

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

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

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.

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

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

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

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

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.

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

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

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

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

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.

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

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

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

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

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.

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

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

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

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

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.

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

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

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

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

Assertion and Reason Test: Periodic Classification of Elements - 1 Free MCQ Practice Test with Solutions

Important Questions for Assertion & Reason Test: Periodic Classification of Elements - 1

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Assertion & Reason Test: Periodic Classification of Elements - 1 MCQs with Answers

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Assertion & Reason Test: Periodic Classification of Elements - 1 - Class 10 MCQ

10 Questions MCQ Test - Assertion & Reason Test: Periodic Classification of Elements - 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): Noble gases are highly reactive.
Reason (R): Noble gases have stable closed shell electronic configuration.

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Important Questions for Assertion & Reason Test: Periodic Classification of Elements - 1

Assertion & Reason Test: Periodic Classification of Elements - 1 MCQs with Answers

Online Tests for Assertion & Reason Test: Periodic Classification of Elements - 1

Assertion & Reason Test: Periodic Classification of Elements - 1 - Class 10 MCQ

10 Questions MCQ Test - Assertion & Reason Test: Periodic Classification of Elements - 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): Noble gases are highly reactive.Reason (R): Noble gases have stable closed shell electronic configuration.

Top Courses for Class 10

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Important Questions for Assertion & Reason Test: Periodic Classification of Elements - 1

Assertion & Reason Test: Periodic Classification of Elements - 1 MCQs with Answers

Online Tests for Assertion & Reason Test: Periodic Classification of Elements - 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): Noble gases are highly reactive.
Reason (R): Noble gases have stable closed shell electronic configuration.