- (A) High boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may decompose
- (B) Lighter/low boiling products are prone to thermal decomposition
- (C) High purity products can be obtained thereby
- (D) None of these
Exam preparation MCQs with answers
Practice Pakistan's most useful MCQs for competitive exams
Prepare for NTS, PPSC, FPSC and subject-wise tests with fresh multiple choice questions, clear options and quick answer reveal.
Latest MCQs
- (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) 6.5 kgf/Cm2 & 95°C
- (B) 1 atm. & 110 °C
- (C) 20 kgf/cm2 & 110°C
- (D) 50 atm. and 150°C
- (A) Diesel
- (B) Kerosene
- (C) Petrol
- (D) Furnace oil
- (A) Solvent extraction
- (B) Sweating
- (C) Resettling
- (D) All
- (A) Sulphur increases
- (B) Sulphur decreases
- (C) Nitrogen decreases
- (D) None of these
- (A) Degree of refinement
- (B) Hydrocarbon content type (aromatic or paraffinic)
- (C) Ease of atomisation
- (D) Sulphur content
- (A) Propane & phenol-cresol mixture
- (B) Methyl ethyl ketone & glycol
- (C) Phenol & furfural
- (D) Propane & liquid sulphur dioxide
- (A) Catalytic cracking
- (B) Hydrocracking
- (C) Dehydrogeneration of Naphthene to produce aromatic
- (D) Catalytic polymerisation
- (A) 1-5 Kgf/cm2 & 200°C
- (B) 15-45 Kgf/cm2 & 450-550°C
- (C) 50 – 75 kgf/cm2 & 600 – 800°C
- (D) 5-10 kgf/cm2 & 150 – 250°C
