Organic Chemistry

31.The petrol sold at the petrol station is mixed gasoline, on mixing –
 
A. Increases the anti-knock quality of petrol
 
B. petrol gets cheaper
 
C. odor is reduced
 
D. The smoke released on the combustion of petrol is reduced
 
Option”A” is correct
32.How is the quality of a gasoline sample determined?
 
A. from its iodine value
 
B. from its cetane number
 
C. by its octane number
 
D. by its mass
 
Option”C” is correct
33.Glycol is added to aviation gasoline because it
 
A. Reduces evaporation of petrol
 
B. Increases the efficiency of petrol
 
C. Prevents freezing of petrol
 
D. reduces petrol consumption
 
Option”C” is correct
34.Wax obtained from petroleum is –
 
A. carnauba wax
 
B. jojoba wax
 
C. paraffin wax
 
D. whale wax
 
Option”C” is correct
35.Where is spermatic wax obtained from?
 
A. from palm leaves
 
B. from the roofs of honey
 
C. from petroleum
 
D. from whale
 
Option”D” is correct
36.Commercial Vaseline is extracted from
 
A. plant gum
 
B. bitumen
 
C. arna wax
 
D. petroleum
 
Option”D” is correct
37.paraffin is a byproduct of
 
A. petroleum refining
 
B. of the Institute of Agricultural Wastes
 
C. of cottage industries engaged in beekeeping
 
D. leather industry
 
Option”A” is correct
38.what is the main component of petrol
 
A. pentane
 
B. octane
 
C. methane
 
D. hexane
 
Option”B” is correct
39.Petroleum has a homogeneous mixture of –
 
A. of carbonates
 
B. of carbohydrates
 
C. of hydrocarbons
 
D. none of these
 
Option”C” is correct
40.Considered to be the progenitor of all aliphatic compounds
 
A. methane
 
B. ethane
 
C. Benzene
 
D. ethylene
 
Option”A” is correct