1001. Which is the most efficient absorbent for SO3 out of the following ?
A. 20% oleum
B. 65% oleum
C. 78% H2SO4
D. 98% H2SO4
1002. Exothermic neutralisation reaction between caustic soda and dodecylbenzene sulfonic acid produces sodium dodecylbenzene sulphate, which is a/an?
A. Explosive
B. Soap
C. Detergent
D. Analgesic drug
1003. Which oil is preferred for paint manufacture ?
A. Drying oil
B. Non-drying oil
C. Semi-drying oil
D. Saturated oil
1004. Pick out the wrong statement pertaining to nitric acid ?
A. About 90% of nitric acid is manufactured by Ostwald’s process
B. It is a strong mono basic acid which reacts with almost all the metals except noble metals
C. Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2)
D. Arc process of nitric acid manufacture is economical as compared to Ostwald’s process
1005. Which of the following, when pyrolysed, produces Perchloroethylene ?
A. Ethylene dichloride
B. Chlorobenzene
C. Carbon tetrachloride
D. Chlorinated paraffin
1006. A fluid is one which :
A. Under the activity of offer power, can’t stay very still *
B. Persistently extends till it fills any holder
C. Is incompressible
D. Permanently resists distortion
1007. In an incompressible fluid, density :
A. Is greatly influenced by small pressure changes
B. Only moderate temperature changes have a significant impact;
C. Moderate temperature and pressure changes have no effect at all *
D. Can adapt to changes in pressure and temperature
1008. Potential flow is the flow of :
A. Compressible fluids with shear
B. Compressible fluids with no shear
C. Incompressible fluids with shear
D. Incompressible fluids with no shear *
1009. Potential flow is characterised by :
A. Irrotational and frictionless flow *
B. Irrotational and frictionless flow
C. One in which mechanical energy is converted into heat
D. The stream’s development of eddies
1010. Newton’s law of viscosity relates :
A. Shear stress and velocity
B. Velocity gradient and pressure intensity
C. A fluid’s shear stress and rate of angular deformation *
D. Pressure gradient and rate of angular deformation