O, ROH are typical samples of Lewis basics

Question 6. Assertion(A): SiF_cuatro 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): It is because prominent ion effect

Question 7. Assertion(A): NH₃, 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): To the increase in temperature, the brand new ionic unit away from drinking water and grows

Matter 8. Assertlon(A): HCl is actually an enthusiastic strong acid while you are HCOOH is a failing acid. Reason (R): HCI is entirely ionised in water while HCOOH try paritally ionised in water. (a) One another An effective and you can R are completely wrong (b) An excellent are wrong but R is right (c) An excellent is right but Roentgen is completely wrong (d) One another Good and you may R was proper and R ‘s the correct need regarding An excellent Respond to: (d) One another A and you may Roentgen is actually right and you may R is the proper explanation from A beneficial

Question nine. Need (R): New dissociation of drinking water was an endothermic impulse. (a) Both A and R try proper and you may Roentgen is the correct explanation off Good (b) A beneficial is correct however, R is incorrect (c) A was wrong but Roentgen is correct (d) One another An excellent and Roentgen is actually incorrect Respond to: (a) One another Good and you may Roentgen is best and you may Roentgen is the proper need regarding A good

Question 10. Assertion(A): Whenever dilution increases, the amount of dissociation out-of poor electrolyte plus develops. Reasoning (R): The degree of dissociation good is inversely proportional in order to quantity c. In the event the dilution expands because of the a hundred moments, new dissociation grows by the ten minutes. (a) Each other Good and you may R was correct and you will R is the correct reasons away from A good (b) Each other A great and you can Roentgen was incorrect (c) A is right but R are completely wrong (d) An effective try completely wrong but R is right Respond to: (a) One another An effective and you will R was right and you will Roentgen is the correct cause from A beneficial

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 escort Sparks 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