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?

Related Mcqs:

Liquefied Petroleum Gas (LPG) is mainly a mixture of _____________________?

A. Propane & butane B. Methane & ethane C. High boiling olefins D. High boiling naphthenes...

Gasoline extracted from natural gas (by compression and cooling) is called the ___________ gasoline?

A. Polymer B. Unleaded C. Casing head D. Straight run...

The most widely used crude topping column in refineries is the ______________ column?

A. Bubble-cap B. Packed bed C. Fluidised bed D. Perforated plate...

Name the hydrocarbon having the poorest oxidation stability ?

A. Naphthene B. Olefin C. Paraffin D. Aromatics...

Which of the following is desirable in petrol (gasoline) but undesirable in kerosene ?

A. Paraffins B. Aromatics C. Mercaptans D. Naphthenic acid...