CHEMISTRY CLASS-9TH (MCQs=1707)

Oxidation number of S is …………
a) +5  

b) +6                      

c) 0    

d) +2

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O2 is ……………. agent.
a) oxidizing                                         

b) reducing
c) a & b both                                       

d) none of these

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HNO3, Br2, Cl2 are ……….. agent
a) oxidizing                                         

b) reducing
c) a & b both                                       

d) none of these

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Carbon is ………….
a) oxidizing agent                               

b) reducing agent
c) a & b both                                       
d) none of these

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H₂, metals, SO₂, and CO are ………….
a) oxidizing agent               

b)reducing agent
c) a & b both                                       

d) none of these

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Ozone is ………..
a) oxidizing agent                             

b) reducing agent
c) a & b both                                       

d) none of these

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