Dry ice (solidified CO2) is used for the___________________?

Related Mcqs:

Styrene (a monomer for the production of polystyrene) is commercially produced by ____________________?

A. Catalytic dehydrogenation of ethyl benzene B. Dehydration of ethyl alcohol followed by hydrogenation C. Reacting ethylene oxide with acetaldehyde D. Fermentation of starch...

The manufacture of Kraft pulp is done by a/an _________________ process?

A. Alkaline B. Acidic C. Neutral D. None of these...

The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to___________________?

A. Avoid mechanical weakening of fibre B. Remove lignin by way of crystallisation C. Increase the cellulose content D. None of these...

Molecular weights of polymers are in the range of__________________ ?

A. 102 – 102 B. 105 – 109 C. 102 – 107 D. 109 – 1011...

Glycerine is recovered from lye by ___________________?

A. Evaporation followed by vacuum distillation B. Liquid extraction technique C. Extractive distillation technique D. None of these...