Chemistry Engineering Interview Preparation Guide
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Chemistry Engineering Interview Questions and Answers will teach us that Chemistry is the science concerned with the composition, structure, and properties of matter. And as well as the changes it undergoes during chemical reactions. Chemistry Interview Questions and Answers will also guide us that it is a physical science for studies of various atoms, molecules, crystals. Learn basic and advance concepts of Chemistry Engineering by Chemistry Engineering Interview Questions and Answers Guide.

174 Chemistry Questions and Answers:

1 :: What is an oxidizing agent?

Any chemical species that has a tendency to accept electrons and thereby undergoing reduction themselves is known as an oxidizing agent
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2 :: What is the dipole moment of chlorooctane?

There are multiple forms of the molecule "chlorooctane." This is because the chlorine atom can be attached to the octane chain in several different places, and each different placement will result in a different dipole moment. If you specify the structure of the compound more precisely (1-chlorooctane or 2-chlorooctane for example), it is possible to determine its dipole moment.
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3 :: How do you extract ephedrine from a mineral block?

You cannot extract ephedrine or pseudo ephedrine from a mineral block. Anyone who tells you that they have done it is either mistaken or a liar.
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4 :: What are the hydrocarbons?

Hydrocarbons are compounds made entirely out of Hydrogen and Carbon.
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5 :: How do you prepare a solution of 1 M HCl?

Exactly how you prepare will depend on what you are starting with. Typically, to make a 1 M HCl solution, you will be starting with a stock solution of more concentrated HCl that you will then dilute.
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6 :: What are KOH and HCl?

KOH is potassium hydroxide, which is a strong base. HCl is hydrochloric acid, which is a strong acid.
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7 :: Is DNA organic?

► Of, relating to, or derived from living organisms: organic matter.
► Of, relating to, or affecting a bodily organ: an organic disease.

In addition, DNA would chemically be considered organic since it contains carbon as the primary chemical backbone of the molecule.
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8 :: What is hydra?

Hydra is a type of polyp. It is an animal, because it moves around like one even though it looks like a plant. A hydra is from the Phylum Cnidarian and belongs with others such as jellyfish and coral.
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9 :: What is alum?

Alum is a chemical (aluminum potassium sulphate); it tends to be whitish powder with several uses, including:

1. As an astringent
2. As an antibacterial
3. As a food preservative
4. As a 'Styptic pencil' to heal shaving cuts
5. To stem the flow of minor blood loss and cuts
6. Soaked into materials to make them flame retardant

There are other uses, but these are some of the more common ones.
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10 :: What is the difference between the law of multiple proportions and the law of definite proportions?

Both laws have to do with relating to Dalton's Atomic Theory. The only difference is that the Law of Definite Proportions deals with elements combining to form ONE compound in a simple whole number ratio. The Law of Multiple Proportions is comparing the same 2 elements that make up 2 different compounds the division of these 2 ratios should equal a simple whole number ratio.

For example, Carbon and oxygen can combine to form carbon monoxide and carbon dioxide. If you calculated each compounds ration of oxygen to carbon, you would get the following ratios: compound A would equal a combining ratio of 1.34:1 (O:C). Compound B would equal a combining ratio of 2.67:1 (O:C).

If you divided the bigger ratio by the smaller ratio you would have that oxygen combines with a ratio of 2.67/1.34, which would equal 1.99:1, which is close enough to 2:1.
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