If the boiler chimney emission consists of dense white smoke, then it can be concluded that

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Mr. Dubey

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Q. If the boiler chimney emission consists of dense white smoke, then it can be concluded that

(A) Coal contains high percentage of sulphur
(B) Insufficient air has been supplied for combustion
(C) Chemically correct air has been supplied for combustion
(D) 20 to 24

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✅ Correct Answer: (B) Insufficient air has been supplied for combustion

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