List of practice Questions

Consider a piston-cylinder arrangement containing a gas. This system is heated by placing it on the top of a burner. The system undergoes:
Bracket supports are most suitable for:
Karbate is:
The rate of corrosion of mild steel by sulphuric acid is unacceptably high for:
Cost of instrumentation in a modern chemical plant as compared to the total plant cost, ranges from:
Break-even point increases with:
Separation of particles of various sizes, shapes, and densities by allowing them to settle in a fluid is called:
Which of the following is a coarse crusher?
When a ball mill rotates at a speed higher than the critical speed, its efficiency is:
Consider separation of dust particles from gases in a cyclone separator. For a given particle size, the terminal velocity is maximum:
If a mass of solid particles is packed by tapping, the bulk density of the mass:
In forced convection, the Nusselt number (Nu) is a function of:
In the industrial production of nitric acid, oxidation of ammonia with air in the presence of 90% platinum, 10% rhodium catalyst in the converter constitutes the first step, the feed gas to the converter contains around:
For a shell and tube heat exchanger, the clean overall heat transfer coefficient is calculated as 250 Wm\(^2\)K\(^{-1}\) for a specific process condition. It is expected that the heat exchanger may be fouled during the operation and a fouling resistance of 0.001 m\(^2\)KW\(^{-1}\) is prescribed. The dirt overall heat transfer coefficient is ------------ Wm\(^2\)K\(^{-1}\).
When the interest is compounded monthly, the effective interest rate will be:
For a typical project, the cumulative cash flow is zero at the:
A production equipment costs ₹200000. Its salvage value is ₹25000. The expected return is ₹50000 per annum. The corporate taxes are taken as 30%. The payback period will be:
Compared to saturated oils, unsaturated oils have:
Which of the following is used as an 'entrainer' in the separation of acetic acid-water mixture by distillation?
For economical operation in gas absorption, the operating line approximately:
Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is:
The McCabe-Thiele method used to find the number of theoretical stages required in a distillation operation is based on the assumption(s) that:
Match LIST-I with LIST-II and select the correct answer using the codes given below the lists.\[\begin{array}{|c|c|} \hline \textbf{LIST-I} & \textbf{LIST-II} \\ \hline \text{A. Rotary atomizer} & \text{1. Kinetic energy} \\ \hline \text{B. Relative volatility} & \text{2. Centrifugal energy} \\ \hline \text{C. Pneumatic nozzle} & \text{3. Distillation} \\ \hline \text{D. Selectivity} & \text{4. Liquid-liquid extraction} \\ \hline \end{array}\] Choose the correct answer from the options given below:
A furnace wall of thickness 1m and surface area 2m² is made of a material whose thermal conductivity is 1 kJ/hr.m°C. The temperature of the inner surface of the wall is 1000°C and of outer surface is 200°C. Heat flow through the wall in kJ/hr will be:
Baffles are provided in heat exchangers to: