The effective inhibitor of pre-ignition is alcohol water lead none of these

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Question
The effective inhibitor of pre-ignition is
Options
A. alcohol
B. water
C. lead
D. none of these

Correct Answer

water

More questions

2. Sand wash is a casting defect which
Options
A. results in a mismatching of the top and bottom parts of a casting
B. results in general enlargement of the casting
C. occurs near the ingates as rough lumps on the surface of a casting
D. occurs as sand patches on the upper surface of a casting

3. The metal extrusion process is generally used for producing
Options
A. uniform solid sections
B. uniform hollow sections
C. uniform solid and hollow sections
D. varying solid and hollow sections

4. The sensible heat factor during cooling and dehumidification process is given by (where h₁ = Enthalpy of air entering the cooling coil, h₂ = Enthalpy of air leaving the cooling coil, and h_A = Enthalpy of air at the end of dehumidification process)
Options
A.
B.
C.
D.

9. When a cylindrical vessel containing liquid is revolved about its vertical axis at a constant angular velocity, the pressure
Options
A. varies as the square of the radial distance
B. increases linearly as its radial distance
C. increases as the square of the radial distance
D. decreases as the square of the radial distance

10. The instrument used to measure external and internal diameter of shafts, thickness of parts and depth of holes, is
Options
A. outside micrometer
B. inside micrometer
C. depth gauge micrometer
D. vernier caliper

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