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
Reason (R): It is because popular ion effect
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): For the escalation in temperature, this new ionic product of water plus develops
Question 8. Assertlon(A): HCl are a keen good acidic whenever you are HCOOH try a weak acidic. Need (R): HCI is wholly ionised in water while HCOOH was paritally ionised within the water. (a) Each other An effective and you will Roentgen is wrong (b) An excellent is incorrect however, Roentgen is correct (c) An excellent is right but R is wrong (d) Both An effective and you can R are best and you can R is the proper factor of A great Answer: (d) Both Good and you will R is correct and you may R is the proper reasons out-of Good
Matter 9. Reason (R): This new dissociation out of liquids try a keen endothermic reaction. (a) One another An effective and you can Roentgen try best and you will Roentgen is the best explanation away from A great (b) An effective is correct but R are completely wrong (c) A is incorrect however, Roentgen is right (d) One another A great and you will R is actually incorrect Address: (a) Each other Good and you can Roentgen was proper and Roentgen is the best reason out of An effective
Question 10. Assertion(A): When dilution grows, the degree of dissociation regarding weak electrolyte including increases. Reason (R): The degree of dissociation an excellent try inversely proportional to help you concentration c. When the dilution expands by one hundred moments, the fresh new dissociation grows by 10 moments. (a) Both An effective and Roentgen are right and you may R is the best need out-of A great (b) Each other Good and you will R are incorrect (c) An excellent is right however, R are wrong (d) An effective is actually completely wrong but R is escort service Jackson MS right Answer: (a) Both A beneficial and you can Roentgen try proper and R ’s the best factor of An excellent
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 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