Question 6. Assertion(A): SiFcuatro can act as Lewis acid. Reason (R): In SiF4, the central atom can expand its octet due to the availability of empty d – orbitais and can accept a pair of electrons. (a) Both A and R are correct and R is the correct explanation of A (b) Both A and R are wrong (c) A is correct but R is wrong (d) A is wrong but R is correct Answer: (a) Both A and R are correct and R is the correct explanation of A

Reasoning (R): It is because popular ion perception

Question 7. Assertion(A): NHstep step three, H2 Reason (R): Molecules with one or more lone pairs of electrons act as Lewis bases. (a) Both A and R are wrong (b) A is correct and R is the correct explanation of A. (c) A is wrong but R is correct. (d) A is correct but R is wrong Answer: (b) A is correct and R is the correct explanation of A.

Assertion(A): Into rise in heat, the fresh new ionic equipment away from water as well as expands

Concern 8. Assertlon(A): HCl was an enthusiastic good acid if you are HCOOH is a failure acidic. Cause (R): HCI is completely ionised in water while HCOOH try paritally ionised in the water. (a) Each other An effective and Roentgen is actually incorrect (b) A is wrong but R is correct (c) A beneficial is correct however, R try wrong (d) Both An effective and Roentgen try correct and you will Roentgen is the best need off An excellent Address: (d) Both An excellent and you can Roentgen try correct and Roentgen is the best explanation out-of An effective

Question 9. Reasoning (R): The fresh dissociation from liquids try a keen endothermic effect. (a) One another A and you can Roentgen try proper and you will Roentgen ’s the proper explanation from A good (b) A is correct but Roentgen is incorrect (c) A great was completely wrong but Roentgen is correct (d) Each other An excellent and R try completely wrong Address: (a) One another A good and Roentgen is actually best and R ’s the right need regarding A

Concern ten. Assertion(A): Whenever dilution grows, the degree of dissociation of weakened electrolyte along with expands. Reasoning (R): The amount of dissociation a beneficial try inversely proportional so you can focus c. If the dilution develops because of the a hundred minutes, this new dissociation increases of the 10 moments. (a) Each other A beneficial and you can R is proper and you can Roentgen ’s the right reasons regarding A beneficial (b) One another A good and R are incorrect (c) An excellent is correct but Roentgen are wrong (d) Good was wrong but Roentgen is right Answer: (a) Each other A beneficial and you may Roentgen are right and R ’s the right explanation out of A

Question 11. Assertion(A): The addition of sodium acetate to Salem escort acetic acid solution leads to the suppression in the dissociation of acetic acid. i.e., CH3COOH and CH3COONa both contains CH3COO – ion as common. (a) Both A and R are correct and R is the correct explanation of A (b) BothA and R are wrong (c) A is correct but R is wrong (d) A is wrong but R is correct Answer: (a) Both A and R are correct and R is the correct explanation of A

Question 12. Assertion(A): The solution of NH4CI has pH value less than 7. Reason (R): The salt of weak base (NH4OH) and strong acid (HCl) is acidic in nature, when dissolved in water. So pH value is less than 7. (a) Both A and R are correct and R is the correct explanation of A (b) Both A and R are wrong (c) A is correct but R is wrong (d) A is wrong but R is correct Answer: (a) Both A and R are correct and R is the correct explanation of A

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