The biochemical treatment applied to sewage effluents is a process of__________________? A. Dehydration B. Reduction C. Oxidation (Correct) D. Polymerisation  

Titanium metal_________________? A. Exists in three allotropic forms B. Cannot be welded C. Is used in oceanographic and space exploration applications (Correct) D. None of these  

Half life period of a chemical reaction is_________________? A. The time required to reduce the concentration of the reacting substance to half its initial value (Correct) B. Half of the space time of a reaction C. Half of the residence time…

Solid angle subtended by the finite surface at the radiating element is_________________? A. Called the view factor B. Called the angle of vision (Correct) C. Proportional to the square of the distance between surfaces D. Expressed in terms of radians  

The space time is equivalent to the holding time in a steady state mixed reactor for_____________________? A. Non-isothermal gas reaction B. Variable fluid density systems C. Constant fluid density systems (Correct) D. Gas reactions with changing number of moles  

Nitrogen content of a nitrogenous fertiliser is 35%. It could be___________________? A. Urea B. Ammonium nitrate (Correct) C. Calcium ammonium nitrate (CAN) D. Ammonium sulphate  

Saturated steam at a pressure of 25 kg/cm2 is throttled to attain 5 kg/cm2. Then the outcoming steam will be_________________? A. Wet B. Saturated C. Superheated (Correct) D. None of these