Chemical Engineering Basics
Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about

1.2090277777778
0.37569444444444
0.70902777777778
0.95902777777778

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Chemical Engineering Basics
In extrusion of metals, which of the following statement is true ?

Relative motion between the billet surface and the container wall is always present
Hollow ram is used for indirect extrusion
Redundant work is a function of the die angle
Speed of the extruded material is same as that of ram speed

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Chemical Engineering Basics
Compression ratio of an I.C. engine is the ratio of the

Pressure after compression to that before compression
Clearance volume to the volume swept by piston per stroke
Volume of air in cylinder before compression to that after compression
None of these

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