List of practice Questions

Secondary nutrients in fertilizers are:
As pressure approaches zero, the ratio of fugacity to pressure (f/P) for a gas approaches:
In petrochemical industry, any petroleum fraction having an approximate boiling point range between 20°C and 200°C which is used as a feed stock is called:
Consider the manufacturing of Linear Alkyl Benzene Sulphonates (LABS). The alkylbenzenes are sulphonated with:
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: