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Q.

Statement I : A colloidal sol of As2S3 is coagulated faster by 0.1 M BaCl2 than by 0.1 M NaCl.Statement II : BaCl2 gives same number of Cl– ions as NaCl

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a

Statement I and II are correct

b

Statement I is correct and II is incorrect

c

Statement - I is incorrect and Statement - II is correct

d

Both statement - I and II are incorrect

answer is B.

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Detailed Solution

As2S3  is a negative solvalencey of opposite ion Ba+2 > Na+ coagulation power of  BaCl2 > coagulation power of NaClI is true II is false
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