Practice Pakistan's most useful MCQs for competitive exams

Aniline point of high speed diesel may be about ____________ °C ?

• (A)  35
• (B)  70
• (C)  105
• (D)  150

Answer

Submitted By :Ali Uppal

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

Answer

Submitted By :Ali Uppal

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

• (A)  Paraffins
• (B)  Aromatics
• (C)  Mercaptans
• (D)  Naphthenic acid

Answer

Submitted By :Ali Uppal

Which of the following factors does not govern the mechanism of petroleum formation from organic sources ?

• (A)  pH of the soil
• (B)  Bacterial action
• (C)  Heat
• (D)  Pressure

Answer

Submitted By :Ali Uppal

Maximum viscosity of tar/PCM/fuel oil for easy and efficient atomisation in conventional burner is _______________ centistokes (or 100 Redwood I seconds) ?

• (A)  5
• (B)  25
• (C)  50
• (D)  100

Answer

Submitted By :Ali Uppal

Aromatics have the highest ________________ of all the hydrocarbons of same carbon atoms?

• (A)  Smoke point
• (B)  Octane number
• (C)  Cetane number
• (D)  Viscosity

Answer

Submitted By :Ali Uppal

Lane and Garton classification of petroleum is based on its ____________________?

• (A)  Composition
• (B)  Specific gravity
• (C)  Optical properties
• (D)  Viscosity

Answer

Submitted By :Ali Uppal

Road grade bitumen is produced from vacuum residue by its ____________________?

• (A)  Aeration
• (B)  Pyrolysis
• (C)  Hydrogenation
• (D)  Steam reforming

Answer

Submitted By :Ali Uppal

Products drawn from the top to bottom of the crude oil distillation column has progressively increasing ___________________?

• (A)  Boiling points
• (B)  Molecular weight
• (C)  C/H ratio
• (D)  All

Answer

Submitted By :Ali Uppal

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-octane is chemically known as ___________________?

• (A)  α-methyl naphthalene
• (B)  2-2-4 tri methyl pentane
• (C)  1, 3 butadiene
• (D)  Tetra methyl ethylene

Answer

Submitted By :Ali Uppal