⟩ Smoke point of kerosene is the A. time after which smoking starts on burning. B. temperature at which smoking starts. C. maximum height of flame (in mm) without causing smoking, when burnt in a standard lamp. D. none of these.
Option B
Option B
Natural gas recovered along with crude oil from oil wells is called wet natural gas which has a higher __________ compared to the dry natural gas. A. unsaturated hydrocarbon content B. calorific value C. quantity of propane D. quantity of butane
H/C ratio (by weight) for the same number of carbon atoms is the highest in case of A. aromatics B. paraffins C. olefins D. naphthenes
Percentage of straight run gasoline in a typical crude oil may be around A. 6 B. 18 C. 38 D. 52
Road grade bitumen is produced from vacuum residue by its A. aeration B. pyrolysis C. hydrogenation D. steam reforming
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
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
CnH2n is the general formula for A. olefins B. naphthenes C. both (a) and (b) D. neither (a) nor (b)
Higher vapour pressure of gasoline indicates A. low flash point B. high breathing loss C. both (a) and (b) D. neither (a) nor (b)
Which of the following theories of origin of petroleum does not explain the presence of nitrogen & sulphur compounds in crude oil? A. Modern theory B. Carbide theory C. Engler theory D. all (a), (b) and (c)
Iso-octane is used as a reference substance in the definition of octane number and it is assigned an octane number value of 100. Iso-octance is chemically known as A. α-methyl naphthalene. B. 2-2-4 tri methyl pentane. C. 1, 3 butadiene. D. tetra methyl ethylene.