Question

Assertion and Reasoning Direction in the following questions, a statement of assertion (A) is

followed by a statement of reason (R). Mark the correct choice as:

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

b. Both assertion (A) and reason (R) are true but reason (R) is not the

correct explanation of assertion (A)

c. Assertion (A) is true but reason(R) is false d. Assertion (A) s false but reason(R) is true

Q5. Assertion: calcium and argon are isobars Reason: calcium and argon have the same mass numbers.

Q6. Assertion: the number of valence electrons in oxygen atoms is 6

Reason: the valency of oxygen atom is 6 Q7. Assertion: most of the alpha particles in Rutherfords experiment passed

straight through the gold foil

Reason: the centre of the atom is positively charged​

Answer 1

Answer:

Q5 - a

Q6 - c ( valency of Oxygen atom is -2)

Q7- b

Explanation:

hope this helps

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