First slide

Laws of Chemical Combination

Question

Which of the following is redox reaction ?

Easy

A

H₂SO₄ with NaOH
B

In atmosphere, O₃ from O₂ by lightning
C

Evaporation of H₂O
D

Oxides of nitrogen from nitrogen & oxygen by lighming

Solution

$N_{2} + O_{2} ⇌ NO + {NO}_{2}$
Nitrogen is oxidised by Oxygen

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