5647Chemical EngineeringMedium
Sound produced by an automobile horn heard at a distance of 1.5 metres corresponds to about ________ decibels?
A90
B150
C180
D120
Correct answer
D. 120
Explanation
The correct answer is 120.
Correct answer
D. 120
Explanation
The correct answer is 120.
Most of the phosphorous present in the blast furnace burden enters into________?
Super heating of steam is done at constant________?
Polythene is a/an ________ polymerisation product?
Specific surface area is the surface area of a unit ________ of materials?
‘P’ is the investment made on an equipment, ‘S’ is its salvage value and ‘n is the life of the equipment in years. The depreciation for Rath year by the sum-of year‟s digit method will be________?
Wood charcoal is used for decolouration of sugar, because it ________ the coloured materials?