Company: Reliance_Aptitude
Difficulty: medium
Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter): 0.5 D 0.2 D 0.25 D 0.75 D Consider a duct of square cross section of side 'b'. The hydraulic radius is given by: b/8 b/4 b/2 b Catalyst is a substance that ---------- Increases the rate of reaction Decreases rate of reaction Either A or B Both A and B C+O2 is an ---------- reaction. Exothermic reaction Endothermic reaction Autocatalytic Depends on the catalyst Which one of the following options represents the major components of oleum? Sulfuric acid and nitric acid Sulfuric acid and sulfur trioxide Concentrated sulfuric acid and petroleum jelly Sulfuric acid and hydrochloric acid Slurries are most conveniently pumped by ---------- syringe pump diaphragm pump gear pump vacuum pump Air with a flow rate of 1000 kg/h is to be cooled using water in a double-pipe counter-flow heat exchanger from a temperature of 70°C to 40°C. Water enters the exchanger at 25°C and leaves at 40°C. The s