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### NEET 2019

MCQ (More than One Correct Answer)
Which mixture of the solution will lead to the formation of negatively charged colloidal [AgI] I sol. ?
A
50 mL of 2 M AgNO3 + 50 mL of 1.5 M KI
B
50 mL of 0.1 M AgNO3 + 50 mL of 0.1 M KI
C
50 mL of 1 M AgNO3 + 50 mL of 1.5 M KI
D
50 mL of 1 M AgNO3 + 50 mL of 2 M KI

## Explanation

AgNO3 + KI $\to$ AgI + KNO3

If KI is in excess then negatively charged colloid, [AgI]I is formed. Whereas, if AgNO3 is in excess positively charged colloid AgI/Ag+ will form.

#### Questions Asked from Surface Chemistry

On those following papers in MCQ (Multiple Correct Answer)
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NEET 2019 (1)
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