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
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. Matter 8. Assertlon(A): HCl is an strong acidic when you are HCOOH is a failure acid. Cause (R): HCI is entirely ionised in water while HCOOH try paritally ionised in the water. (a) Each other A good and you can Roentgen is incorrect (b) A great are completely wrong but Roentgen is right (c) Good is correct however, R are wrong (d) Both An excellent and you can Roentgen is actually correct and R is the correct factor out of A good Address: (d) Each other An excellent and Roentgen is actually correct and you may R is the correct reasons from An excellent
Matter 9. Cause (R): The fresh dissociation out-of liquids try an endothermic reaction. (a) Each other An excellent and you may Roentgen are best and you may Roentgen ‘s the best factor off A great (b) An excellent is correct however, R is actually incorrect (c) A try completely wrong but R is correct (d) Each other An effective and you will Roentgen are wrong Respond to: (a) Each other A good and you will R is proper and you may Roentgen is the best reason out of Good Matter 10. Assertion(A): When dilution develops, the degree of dissociation regarding poor electrolyte also develops. Need (R): The level of dissociation good is actually inversely proportional in order to amount c. In the event that dilution develops of the 100 minutes, brand new dissociation develops by the ten times. (a) Each other A and Roentgen are proper and you may Roentgen is the right factor regarding A beneficial (b) Each other A beneficial and you may Roentgen was incorrect (c) A beneficial is correct but Roentgen was completely wrong (d) An excellent was incorrect however, Roentgen is right Respond to: (a) Both A good and you may R are correct escort service Omaha and you may Roentgen is the right need of A good 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 AAssertion(A): With the escalation in temperatures, the ionic unit away from liquids including expands