A:-time

B:-temperature

C:-weight

D:-mass

Correct Answer:- Option-B

Question65:-For a first order isothermal catalytic reaction A *->* P, occurring in an infinitely long cylindrical pore, the
relationship between effectiveness factor, €, and Thiele modulus, 9, is

”127ھ ع-ھ
‎8:-६= 9‏
0651

D:-e = 1/9

Correct Answer:- Option-C

Question66:-For a first order isothermal chemical reaction in a porous catalyst, the effectiveness factor is 0.3. The
effectiveness factor will increase if the

A:-catalyst size is reduced or the catalyst diffusivity is reduced
B:-catalyst size is reduced or the catalyst diffusivity is increased
C:-catalyst size is increased or the catalyst diffusivity is reduced
D:-catalyst size is increased or the catalyst diffusivity is increased
Correct Answer:- Option-B
Question67:-Static characteristics of an instrument is
A:-response
B:-drift
-dynamic error
D:-time lag
Correct Answer:- Option-B
Question68:-U-tube type manometer is
A:-half order system
B:-second order system
ero order system
D:-first order system
Correct Answer:- Option-B
Question69:-Bimetallic thermometers are used to measure the temperature in the range of
A:--20° to 1600°C
-300° to 1100°C
-800° to 2000°C
D:--20° to 300°C
Correct Answer:- Option-D
Question70:-Gas chromatography is used for measurement of
A:-temperature
-pressure
C:-concentration
D:-flow rate
Correct Answer:- Option-C
Question71:-Styrene - Butadiene rubber is commercially manufactured by
A:-bulk polymerisation
suspension polymerisation
C:-solution polymerisation
D:-emulsion polymerisation
Correct Answer:- Option-B
Question72:-Triple superphosphate is manufactured by reacting
A:-Phosphate rock with phosphoric acid
B:-Phosphate rock with sulphuric acid
C:-Phosphate rock with nitric acid
D:-Ammonium phosphate with phosphoric acid
Correct Answer:- Option-A
Question73:-In petroleum refining, the process used for conversion of hydrocarbons to aromatics is
A:-catalytic cracking
B:-catalytic reforming
C:-hydro treating