Ethyl mercaptan is added to the Doctor negative LPG for facilitating t – McqOptions

MCQOPTIONS

1.	Ethyl mercaptan is added to the Doctor negative LPG for facilitating the detection of its leakage (by bad odour) to the extent of about __________ ppm.
A.	1
B.	50
C.	5000
D.	10000
Answer» C. 5000

Discussion

No Comment Found

Related MCQs

Octane number of -heptane is assumed to be
Concentration of HSO catalyst in alkyla-tion is kept between 90-98%, because HSO having concentration
The pressure (kg/cm ) and temperature (°C) maintained in electrical desalters for crude oil are respectively
Though increased pressure has a retarding effect on cracking reaction, yet in actual process, a positive pressure of 10-15 kgf/cm is maintained during cracking mainly to
Raw Kerosene has a smoke point of 15 mm. After it is subjected to dearomatisation by liquid SO extraction (Edeleanu process), its smoke point may become __________ mm.
Which of the following has the maximum °API gravity of all?
Pressure maintained in the high pressure primary tower of a three stage crude oil distillation system is about __________ kg/cm .
Which of the following has the minimum °API gravity of all?
Aniline point of high speed diesel may be about __________ °C.
A fuel oil consists of 4 fractions A, B, C and D. Their molar compositions and vapour pressures are given below :The vapour pressure of the fuel oil will be __________ mm Hg.