Practice Pakistan's most useful MCQs for competitive exams

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

• (A)  Polymer
• (B)  Unleaded
• (C)  Casing head
• (D)  Straight run

Answer

Submitted By :Ali Uppal

_____________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation?

• (A)  Magnesium
• (B)  Potassium
• (C)  Calcium
• (D)  Sodium

Answer

Submitted By :Ali Uppal

Clay treatment is used to remove ___________________ ?

• (A)  Salt from the crude oil
• (B)  Colour & dissolved gases from cracked gasoline
• (C)  Wax from lube oil
• (D)  None of these

Answer

Submitted By :Ali Uppal

Which of the following is the easiest to crack ?

• (A)  Paraffins
• (B)  Olefins
• (C)  Naphthenes
• (D)  Aromatics

Answer

Submitted By :Ali Uppal

Which parameter is used for the grading of paraffin waxes ?

• (A)  Specific gravity
• (B)  Melting point
• (C)  Viscosity
• (D)  Penetration number

Answer

Submitted By :Ali Uppal

Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about _______________ °C ?

• (A)  50
• (B)  70
• (C)  90
• (D)  140

Answer

Submitted By :Ali Uppal

Which of the following is a Naphthene ?

• (A)  Butene
• (B)  Butadiene
• (C)  Cyclohexane
• (D)  Acetylene

Answer

Submitted By :Ali Uppal

Hydrocracking employs ___________________?

• (A)  High pressure & temperature
• (B)  Low pressure & temperature
• (C)  High pressure and low temperature
• (D)  High temperature and low pressure

Answer

Submitted By :Ali Uppal

Which is almost absent in crude petroleum ?

• (A)  Olefins
• (B)  Mercaptans
• (C)  Naphthenes
• (D)  Cycloparaffins

Answer

Submitted By :Ali Uppal

Straight run naphtha is converted into high octane number petrol (gasoline) by catalytic____________________?

• (A)  Cracking
• (B)  Polymerisation
• (C)  Reforming
• (D)  Isomerisation

Answer

Submitted By :Ali Uppal