Bureau of Indian Standards Scientist B Interview Questions and Answers

My favorite subjects are biology and chemistry.

• I enjoy learning about the intricacies of living organisms and their functions.

• Chemistry fascinates me because it explains the composition and behavior of matter.

• I also appreciate the practical applications of both subjects in fields such as medicine and environmental science.

Polymerization is a process of combining monomers to form a polymer. Heat of reaction can be exothermic or endothermic depending on the type of polymerization.

• Polymerization is a chemical reaction that involves the combination of monomers to form a polymer.

• The heat of reaction for polymerization can be exothermic or endothermic depending on the type of reaction.

• Exothermic reactions release heat while endothermic reacti...read more

Murfree efficiency is a measure of the efficiency of a heat engine.

• It is a measure of the ratio of the actual work output to the maximum possible work output.

• It is named after American physicist and engineer William Henry Murfree.

• It is commonly used in thermodynamics and engineering.

• It is calculated using the formula: Murfree efficiency = (actual work output / maximum possible work output) * 100%

Yes, I have experience in solid catalyzed reactions and designing parameters for fluidized bed reactors.

• I have conducted solid catalyzed reactions using zeolites as catalysts.

• I have designed parameters for fluidized bed reactors such as gas flow rate, temperature, and catalyst loading.

• I have optimized the reaction conditions for maximum yield and selectivity.

• I have also studied the effect of catalyst deactivation on th...read more

To increase effectiveness of double pipe heat exchanger, increase surface area, improve fluid flow, and use appropriate materials.

• Increase surface area by using longer pipes or adding fins

• Improve fluid flow by increasing velocity or using baffles

• Use appropriate materials with high thermal conductivity

• Consider counter-current flow for maximum heat transfer

• Regular maintenance to prevent fouling and scaling

• Optimize temper...read more

Mach number is the ratio of an object's speed to the speed of sound in the surrounding medium.

• It is named after Austrian physicist Ernst Mach.

• It is used to describe the speed of an object in relation to the speed of sound.

• Mach 1 is the speed of sound, so anything traveling at Mach 1 is traveling at the speed of sound.

• Supersonic aircraft have a Mach number greater than 1.

• Hypersonic aircraft have a Mach number greater th...read more