A. When the density of the reaction mixture is constant
B. For large diameter tubular reactor
C. For narrow diameter tubular reactor
D. For CSTR
CHEMICAL ENGINEERING
In liquid-liquid extraction, the number of phases at plait point is __________________?
A. 1
B. 2
C. 3
D. 4
_____________ plant emits large amount of SO2 as an air pollutant?
A. Nitric acid
B. Sulphuric acid
C. Chlor alkali
D. Iron & steel
The temperature at which ferromagnetic material can no longer be magnetized by the outside forces, is termed as the____________________?
A. Critical point
B. Curie temperature
C. Inversion temperature
D. Eutectic temperature
The value of Stefan-Boltzmann constant in SI unit is_________________?
A. 5.6697 × 10-8W/m2.°K4
B. 0.1714 × 10-8W/m2.°K4
C. 5.6697 × 10-8kcal/m2. °K4
D. 0.1714 × 10-8kcal/m2. °K4
Increase in the specific gravity of petroleum products indicates________________?
A. Decrease in paraffin content
B. Increase in thermal energy per unit weight
C. Increase in aromatic content
D. Higher H/C ratio
Pick out the wrong statement. Iodine value of an oil or fat is________________?
A. The number of grams of iodine taken up by 100 gm of oil or fat
B. A measure of its unsaturation
C. Helpful in findings its adulteration & its suitability for making soap
D. Independent of the type of oil, whether it is drying or non-drying
Cement mainly contains_________________?
A. CaO, SiO2, Al2O3
B. MgO, SiO2, K2O
C. Al2O3, MgO, Fe2O3
D. CaO, MgO, K2O
Chloral is used in the manufacture of__________________?
A. DDT
B. BHC
C. Parathion
D. None of these
Mass transfer co-efficient is directly proportional to DAB 0.5, according to ________________ theory ?
A. Penetration
B. Surface renewal
C. Film
D. None of these
