How does a chemical get ignited without external heat source on reaching its auto ignition temperature

What does Dew point -40C mean in an air drying unit.

A cylindrical vessel of 10m height has water upto 6m and is under a pressure of 15bar.What will be the pressure at the bottom most point of the vessel?

Why chlorine cylinders are laid down horizontally?

To how much height the liquid willbe thrown out to atmosphere from a pump with a discharge pressure of 5bar

TCL,

What fluid first to be lined up in a heat exchanger whether hot or liquid?why?

TCL,

What is the iodine value of spent carbon?How iodine value is used to determine the power of carbon to adsorb?

In a screw compressor air is sucked from atm and mixes with the oil and is separated using separators.Will the viscosity of the oil get affected as moisture in air gets mixed with oil?

What are the most common problems encountered in a valve or bubble cap distillation column?

Eastman Chemical,

What is the maximum steam pressure that can be generated?

CPCL,

Can anyone explain in a simple way the difference between DCS and PLC?

Honeywell,

How LPG gets liquefied by elevating the pressure?If the pressure is increased the temperature also increases,then how LPG is in liquid form?

What is g and gc in a bernoulli's theorem?

TCL,

1.How a chlorine leak is detected? 2.What would happen if excess chlorine is added to water in cooling tower?

Why water is not directly added to sulphuric acid for dilution?