The angle of vision does not affect radiation between two parallel bodies. But, it is an important factor when it comes to curved surfaces.

Draft tubes decrease crystal-crystal attrition. Crystals should be kept off bottom so as to encourage crystal growth.

Soya bean has low oil content. If the oil content is low, extraction is done by solvent extraction alone.

Radiation needs NO medium to travel. Thermal radiation is emitted by every body at a temperature above 0 K.

Plate and frame filter press is the cheapest filtration equipment among all the equipment.

In microwave heating, heat is not applied to the food item. Instead, heat is made to generate within the food item. Radiation doesn’t gives even drying whereas microwave heating does by addition of water. Water has a low dielectric constant due to the generation of friction due to the rotation of dipoles. Hence, water should be added for even heating.

Cellulose was added in the pulping of certain fruit juices as a filter aid. Since in this case, the filtrate is the desired product, the decision is right as the cellulose stays inside the filter cake after the process is over and doesn’t affect the filtrate.

Smaller particles dissolve as they have a larger surface area and larger particles grow. The above process is called Ostwald ripening.

Operating line gives the relationship between the concentration of gas entering stage n and concentration of liquid leaving stage n.

Filter cake increases the efficiency of filtration as it offers some amount of resistance. Filter aid is added to the filtrate when the filter cake is the desired product.