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
Related Mcqs:
- Char value of Kerosene is the amount of charred oil deposition on the wick obtained after burning it in a standard wick lamp at a standard rate for 24 hours. Char value of a good quality kerosene should be less than ________________ mg/kg of kerosene?
A. 1
B. 20
C. 100
D. 500 - Smoke point of a test sample of kerosene is found to be 15 mm. On removal of ________________ from it, the smoke point rises to 25 mm?
A. n-paraffins
B. Olefins
C. Aromatics
D. None of these - Raw Kerosene has a smoke point of 15 mm. After it is subjected to dearomatization by liquid SO2 extraction (Edeleanu process), its smoke point may become _______________________ mm?
A. 5
B. 10
C. 25
D. 100 - Smoke point of a good burning kerosene may be around _______________ mm?
A. 0-5
B. 20-25
C. 60-75
D. 100-120 - Smoke point of kerosene expresses its__________________?
A. Burning characteristics
B. Luminosity characteristics
C. Aromatic content directly
D. Lamp wick wetting characteristics - Smoke volatility index is equal to smoke point plus______________________?
A. 0.42 × (% distilled at 204°C)
B. 5 mm
C. 0.84 × (% distilled at 204°C)
D. 10 mm approximately - Flash point of diesel/kerosene (>50°C) is determined by the_______________?
A. Abel apparatus
B. Pensky-Martens apparatus
C. Saybolt chromometer
D. None of these - Good quality kerosene should have__________________?
A. Low smoke point
B. High smoke point
C. High aromatics content
D. Low paraffins content - A typical yield of kerosene in straight run distillation of crude oil may be about __________________ percent?
A. 4
B. 10
C. 18
D. 26 - Which is the most desirable component of a good quality kerosene ?
A. i-paraffins
B. Aromatics
C. n-paraffins
D. Naphthenes
