What is the correct sequence of the concentration of various components of producer gas, from highest to lowest?

1.Methane (CH4)

2.Carbon dioxide (CO2)

3.Carbon monoxide (CO)

4.Nitrogen (N2)

A4, 3, 1, 2

B4, 3, 2, 1 ✓ Correct

C3, 4, 1, 2

D3, 4, 2, 1

Correct answer: (B) 4, 3, 2, 1

Explanation

Nitrogen is the most abundant component of producer gas, drawn in with the combustion air.

Carbon monoxide is the next most plentiful and is the chief combustible in the gas.

Carbon dioxide follows in a smaller share of the mixture.

Methane is present only in a minor amount at the bottom of the order.

The order from highest to lowest is nitrogen, carbon monoxide, carbon dioxide, then methane.

Producer gas is made by passing air through hot coke or coal.

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