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): This is due to preferred ion perception
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 escort sites Milwaukee WI 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 the increase in heat, the latest ionic equipment away from liquid in addition to develops
Concern 8. Assertlon(A): HCl is actually an strong acid when you find yourself HCOOH are a failure acid. Reasoning (R): HCI is wholly ionised within the water while HCOOH are paritally ionised in water. (a) One another A good and you will Roentgen are completely wrong (b) A is actually completely wrong but Roentgen is right (c) An effective is right but R try completely wrong (d) Each other A beneficial and you may R is correct and you will R ‘s the proper need out-of A good Address: (d) One another An effective and R was proper and you may Roentgen is the best reason away from Good
Question nine. Need (R): The brand new dissociation regarding h2o are an enthusiastic endothermic effect. (a) One another An excellent and you can R are proper and you may Roentgen is the best cause from A good (b) A good is right but R was wrong (c) Good is incorrect however, Roentgen is correct (d) Each other An excellent and you may Roentgen was incorrect Respond to: (a) Each other An effective and you will Roentgen is best and you can R is the right explanation out of A beneficial
Concern ten. Assertion(A): Whenever dilution grows, the amount of dissociation off poor electrolyte in addition to expands. Need (R): The degree of dissociation a great is actually inversely proportional to help you attention c. If the dilution grows because of the a hundred times, brand new dissociation expands because of the 10 minutes. (a) One another An excellent and R are best and you can R is the right reason of A (b) Each other A great and you can R try wrong (c) A is right but R are completely wrong (d) A beneficial was incorrect but R is correct Address: (a) Each other An excellent and R are right and you can Roentgen is the right factor away from 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