Hindustan Unilever Interview Questions and Answers

Types of dryers include tray dryers, rotary dryers, fluidized bed dryers. Heat and mass transfer are analogous processes. Multi effect evaporator uses multiple stages to efficiently evaporate liquids.

• Types of dryers: tray dryers, rotary dryers, fluidized bed dryers

• Heat and mass transfer are analogous in that both involve the movement of energy or particles from one place to another

• Multi effect evaporator uses multiple stages to evaporate liquids, with each stage utilizing the...read more

Ambient temperature is the temperature of the surrounding environment.

• It is the temperature of the air or surroundings in which an object is located.

• It can vary depending on the location and time of day.

• It is typically used as a reference point for temperature measurements.

• Room temperature is a common example of ambient temperature, usually around 20-25°C.

I conducted an experiment to test the effectiveness of a new catalyst in a chemical reaction.

• Designed and set up the experiment to compare the reaction rate with and without the catalyst

• Measured the reaction rate using spectroscopy

• Analyzed the data to determine the impact of the catalyst on the reaction

• Concluded that the catalyst significantly increased the reaction rate

Welding rod specification refers to the detailed information about the type, composition, and properties of a welding rod.

• Welding rod specification includes information about the type of welding rod, such as whether it is a coated electrode or a bare electrode.

• It also includes details about the composition of the welding rod, such as the type and percentage of filler metal and flux used.

• The specification provides information about the diameter and length of the welding rod.

• It...read more

Distillation is a process used to separate mixtures by heating and cooling. There are several types of distillation.

• Simple distillation: used to separate liquids with different boiling points

• Fractional distillation: used to separate liquids with similar boiling points

• Steam distillation: used to extract volatile compounds from plants

• Vacuum distillation: used to separate substances with high boiling points

• Azeotropic distillation: used to separate azeotropic mixtures