Shrinkage allowance on pattern is provided to compen... - Solved MCQs & Answer

2149Chemical EngineeringMedium

Shrinkage allowance on pattern is provided to compensate for shrinkage when the ________?

ASolid phase temperature drops from freezing temperature to the room temperature

BLiquid metal temperature drops from pouring temperature to room temperature

CMetal changes from liquid state to solid state at freezing temperature

DLiquid metal temperature drops from pouring temperature to freezing temperature

Correct answer

A. Solid phase temperature drops from freezing temperature to the room temperature

Explanation

The correct answer is Solid phase temperature drops from freezing temperature to the room temperature.

Pure carbon is completely burnt in oxygen. The flue gas analysis is 70%CO2, 20%CO and 10%O2. The percent excess oxygen used is ________?

Filter aid is used to________?

The ratio for the rate of washing to the final rate of filtration in a washing type of plate and frame filter is________?

Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively?

Chemical formula of oleum is________?

Horsepower increase of a centrifugal gas compressor without altering the volumetric flow rate will ________ the gas discharge pressure?