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waxes

mercaptans

asphalt

diolefins

smoke point

aniline point

luminosity number

aromatic content

is more viscous than high viscosity furnace oil (HVFO).

stands for low sulphur heavy stock.

is an ideal fuel for metallurgical furnaces due to its lower sulphur content (< 1%).

all (a), (b) and (c).

uses naphtha as feedstock.

does not much affect the molecular weight of the feed.

improves the quality & yield of gasoline.

all (a), (b) and (c).

Tetraethyl lead

Tetramethyllead

Ethyl nitrate or acetone

None of these

potassium isobutyrate

sodium plumbite

methanol

phenol

With increase in the reactor pressure, octane number of gasoline decreases.

With increase in the reactor temperature, gasoline yield decreases for a given conversion.

Percentage conversion increases with increase in the catalyst to oil ratio.

all (a), (b) and (c).

Coking

Visbreaking

Pyrolysis

None of these

degree of refinement.

hydrocarbon content type (aromatic or paraffinic).

ease of atomisation.

sulphur content.

Alkylation

Polymerisation

Isomerisation

none of these