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
Cause (R): This is due to well-known ion impression
Question 7. Assertion(A): NHstep 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): Toward escalation in heat, the newest ionic unit from liquid together with expands
Question 8. Assertlon(A): HCl is a keen solid acidic if you’re HCOOH is a weak acidic. Reasoning (R): HCI is wholly ionised in water whereas HCOOH is actually paritally ionised in the water. (a) Each other An excellent and you may Roentgen is incorrect (b) A beneficial is actually incorrect however, R is correct (c) An excellent is right however, R try completely wrong (d) Both Good and you will Roentgen is right and you can Roentgen is the right factor from A Respond to: (d) Each other A and R are right and you will Roentgen ‘s the proper factor out of An excellent
Question nine. Reason (R): The new dissociation of h2o is an enthusiastic endothermic impulse. (a) Both An excellent and you can R try correct and you may Roentgen is the right factor off Good (b) A beneficial is correct however, Roentgen try incorrect (c) A great is actually completely wrong however, R is correct (d) Each other A good and R is completely wrong Respond to: (a) Both A and Roentgen is actually correct and you will Roentgen ‘s the proper need away from A
Matter ten. Assertion(A): Whenever dilution develops, the degree of dissociation regarding weakened electrolyte plus develops. Cause (R): The degree of dissociation a beneficial is inversely proportional in order to attention c. In the event the dilution increases from the a hundred moments, the newest dissociation expands by the ten moments. (a) Both A and you can R is actually proper and you can R ‘s the right need away from A (b) Each other A great and you can Roentgen are wrong (c) A beneficial is correct however, Roentgen is completely wrong (d) An excellent was completely wrong however, R is correct Answer: (a) Both An excellent and you can R are right and Roentgen is the best need of An effective
Question 11. Assertion(A): The addition of sodium acetate to 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 escort sites Greeley 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