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Solution


Q.

Given below are two statements:                                   [2022]

Statement I:   In the coagulation of a negative sol, the flocculating power of the three given ions is in the order:  Al3+>Ba2+>Na+

Statement II:   In the coagulation of a positive sol, the flocculating power of the three given salts is in the order: NaCl>Na2SO4>Na3PO4​

In the light of the above statements, choose the most appropriate answer from the options given below:
1 Statement I is incorrect but Statement II is correct.  
2 Both Statement I and Statement II are correct.  
3 Both Statement I and Statement II are incorrect.  
4 Statement I is correct but Statement II is incorrect.  

Ans.

(4)