Q.

Conc. HNO3 reacts with non-metals like I2 , P4 , S8 , C to give products. Behaviour of conc. HNO3 in these reactions is

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a

Acid

b

Reducing agent

c

Oxidizing agent

d

nitrating agent

answer is B.

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Detailed Solution

Conc. HNO3 oxidizes all non-metals to their 'ic' acids and itself reduces to NO2

Ex:-

 

I_2\rightarrow HIO_3\\P_4\rightarrow H_3PO_4\\S_8\rightarrow H_2SO_4\\C\rightarrow H_2O+CO_2
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