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Anu Joshi
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Asked: 2021-12-16T06:51:01+00:00 In:

A student while walking on the road observed that a cloud of black smoke belched out from the exhaust stack of moving trucks on the road. Choose the correct reason for the production of black smoke:

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Poll Results

71.15%[A] Limited supply of real leads to incomplete combustion of fuel. ( 37 voters )
9.62%[B] Rich supply of air leads to complete combustion of fuel ( 5 voters )
3.85%[C] Rich supply of air leads to a combination reaction ( 2 voters )
15.38%[D] Limited supply of air leads to complete combustion of fuel ( 8 voters )
Based On 52 Votes

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The limited supply of air leads to incomplete combustion of fuel, which in turn leads to the production of black smoke.

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    1 Answer

    1. [A] Limited supply of real leads to incomplete combustion of fuel.

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