Briefly explain the objectives of debarking, chipping, bleaching and beating steps in papermaking.

Q: In a warm environment, which restorative wax is recommended for surface restoration? a. opaque b.…

A: In a warm environment, which restorative wax is recommended for surface restoration?

Q: After preparing the column, why should the silica get never to dry?

A: Column chromatography is a technique used to spearate organic  compounds from a mixture. It works…

Q: Need to find percent recovery of crude caffine and purified caffine

A: Given that -  Mass of Caffeine in tea bags = 550 mg  Mass of Crude Caffeine = 109 mg  Mass of…

Q: Briefly discuss some of the operations that are typically performed on a part after it has been…

A: Solidification is the process in which transformation of a liquid to a solid takes place. In…

Q: Briefly explain why it is important to use crucible tongs when you transfer the heated crucible (b)…

A: A quantitative analysis where the amount of substance is  calculated present in the sample by…

Q: Write down the flow chart of Hand molding process for the manufacturing of suppositories?  Please…

A: Answer -  Suppositories - Suppositories are generally made from solid ingredients and drugs which…

Q: Screen. 7 With increasing polarity of solvent the

A: UV-Vis Spectroscopy can be defined as a technique that is used for measuring amount of light…

Q: What is the benefit of using fluted filter paper instead of not folding it?

A: “Fluted “ filter paper (LEFT) is used when we wish to separate a liquid and a solid, keeping the…

Q: Give an example for the a β-diester

A: Given compound,           β-diester

Q: Is there any difference between post-processing and post-treatment?

A: A question based on the terms used in chemical methods, which is to be accomplished.

Q: Distinguish between electrostatic and electrophoretic coating

A:

Q: What is the importance of loss on drying test?

A: Concepts of loss on drying test.

Q: What is the purpose of drying the remaining solid after extraction under a heat lamp?

A: The process, in which water and other solvent is evaporated from the solid-liquid mixture to form…

Q: Why is it important to pre-treat the solid before leaching?

A: It is important to pre-treat the solid before leaching because of Agglomeration ( this stage…

Q: Write short note on the given topics:  Co acervation method of microencapsulation

A: Write short note on the given topics: Coacervation method of microencapsulation.

Q: What is cross linking, give how does it effect recycling ability and strength of a polymer,

A: This is a question from polymer chemistry.

Q: xtracting natural from plants flowchart

A:

Q: powder pressing techniques should be used?

A: Uniaxial pressing includes the compaction of powder into a rigid die by applying pressure through a…

Q: State the different between a dehydrating agent and a drying agent

A: Dehydration is a chemical process. It involves the erosion of water which is chemically associated…

Q: The purpose of fluting filter paper.

A: fluting filter paper when performing a gravity filtration it means folding a filter paper to give a…

Q: What are the ideal factors to consider for ranking these glove materials for toluene exposure

A: Glove selection chart provides advantage and disadvantages of a specific gloves to protect from the…

Q: Why do we use more than one solvent in the cold extraction method?

A: In chemistry like dissolves like

Q: Precautions for filter paper

A: Filter paper: It is a paper that acts as a semi-permeable barrier for the mixture of solid and…

Q: What happen to ink in the filter paper strip which is store in isopropyl alcohol for 15 minute

A: Given: To determine what happen to ink in the filter paper strip which is store in isopropyl alcohol…

Q: Fill in the following blanks that describe using sodium sulfate for a drying agent: Sodium sulfate…

A: Sodium sulphate like drying agent are used to remove water. They can absorb water from organic…

Q: Determine the moisture content of the crystalline solid that weighs 4.8756g after staying in the…

A: The weight reduced on heating will give the amount of moisture content in the solid.

Q: After a recrystallization experiment, the crystals were dried very well. The melting point…

A: According to the question, after a recrystallization experiment, the crystals were dried very well.…

Q: Write the Quality Control Process For the Chemical (Exfoliant) ? Please answer at your own words.

A: Quality process for the exfoliant is given below.

Q: Just prior to drying an organic layer with a drying agent, you notice water droplets in the organic…

A: According to the given problem just prior to drying an organic layer with a drying agent, we notice…

Q: Weight of Crucible Weight of sample Weight of ash after incineration 15.254g 3.12g 0.18

A:

Q: What is the role of collectors in Froth Floatation process?

A: Various processes are used for extraction of minerals. These minerals are very useful for…

Q: Emulsion is formed during extraction at:

A: option a

Q: Write the Separation of heavy metals using solvent extraction technique.

A: Solvent extraction is an analytical method in which constituents are separated based on their…

Q: Briefly discuss emulsion and suspension polymerization techniques.

A: Emulsion polymerization: The emulsion polymerization include a) a water soluble initiator, b) a…

Q: It is used with samples in MALDI system to help ionization of the sample and then irradiated with…

A: The objective of the question is to select one of the given options based on the given statement…

Q: Discuss how sample concentration is determined using the standard addition method. What limitation…

A: Standard addition method includes the eliminate matrix effects that means it assess whether a sample…

Q: What would happen if the student did not stop the development before the solvent reached the top of…

A: The solvent would wash away the dye.

Q: crucible and precipitate are dry?

A: For precipitate are dry:                        Pour the methanol into the crucible ,swirl gently ,…

Q: What happen to the glowing wood splint when it is inserted inside the test tube?

A: Given,          Glowing wood splint is inserted into a test tube     Required,…

Q: improve

A: We know that resolution is a measure of how well two Elution peak can be differentiated in…

Q: How is a sample of a polymer taken for characterization & analysis?

A:

Q: Give five Synthetic Applications of Stobbe Condensation in detail?

A: The chemical reaction of an aldehyde or ketone with an ester of the succinic acid to produce…

Q: Prepare a report explaination on Bending Test - Compression Test

A: What is a Compression Test? compression test is any test in which a material experiences opposing…

Q: What is the process of seeding, as it applies to recrystallisation? What purpose does it serve?

A: The process of seeding is defined as the addition of crystal of pure substance into saturated…

Q: The rotovap works to efficiently evaporate solvents by

A: Rotovap can work to efficiently to evaporate solvents by  1. Reducing the pressure to lower the…