A. Reduce its cost
B. Narrow down its explosion limit
C. Assist in checking its leakage from cylinder
D. Increase its calorific value
Related Mcqs:
- Liquefied Petroleum Gas (LPG) in domestic use cylinders is in the liquid form. The density of LPG in liquid form is about ________________ of that of water (i.e. 1 gm/c.c)?
A. One fourth
B. One third
C. Half
D. One eighth - Liquefied Petroleum Gas (LPG) is mainly a mixture of _____________________?
A. Propane & butane
B. Methane & ethane
C. High boiling olefins
D. High boiling naphthenes - Liquefied petroleum Gas (LPG) used for the household cooking comprises mainly of _______________?
A. Propane & butane
B. Butane & ethane
C. Methane & ethane
D. Methane & carbon monoxide - Mercaptans is represented as (where R and R’ are alkyl groups) _____________________?
A. R-COOH
B. R-S-H
C. R-S-R
D. R-S-R’ - 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 - Hydrogen content in petroleum products varies from 12 to 15% (by weight). As a result the difference between gross and net heating value of petroleum fuels varies in the range of ______________ kcal/kg?
A. 600-750
B. 250-350
C. 1000-1500
D. 2000-2500 - Solution used in Doctor’s treatment for the removal of mercaptans is_________________?
A. Sodium hydroxide
B. Sodium plumbite
C. Cupric chloride
D. Potassium isobutyrate - Mercaptans are________________?
A. Low boiling sulphur compounds
B. Added in LPG cylinders to detect gas leakage by its smell
C. Undesirable in petrol, as they reduce its octane number
D. All A., B. and C. - With increase in density, the viscosity of petroleum products _____________________?
A. Increases
B. Decreases
C. Remain same
D. Either A. or B. - LPG stands for ____________________?
A. Liquid petroleum gas
B. Liquefied petrol gas
C. Liquid petrol gas
D. Liquefied petroleum gas
