Chemical Engineering Basics - Chemical Engineering Questions and Answers

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.

120

∞

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Normalising of a casting does not

induce stresses in it.

refine its grain structure.

reduce seggregation.

improve its mechanical properties.

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

The swift cup test evaluates the following property of a sheet metal.

Stretchability

Drawability

Bendability

None of these

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

__________ is the most important element, which controls the physical properties of steel.

Manganese

Silicon

Carbon

Vanadium

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

The emf of a Deniell cell can be increased by

decreasing the surface area of the electrodes.

increasing the concentration of zinc sulphate solution.

increasing the surface area of the electrodes.

increasing the concentration of copper sulphate solution.

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

A hot short metal is

hard when hot.

brittle when cold.

brittle when hot.

brittle under all conditions.

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Corrosion rate can not be lowered by reducing the __________ of the corroding medium.

concentration

velocity

temperature

none of these

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Routing in production, planning & control is concerned with the

sequence of operation to be performed.

progress of work performed.

authorisation of work to be performed.

balancing of load on machines.

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm².