EV HSC Chemistry 1st Paper MCQ Question Answer 2020. Chemistry is one of the diverse branches of physical science. It is known as the science of life. The practice of chemistry has been in the constant increase since the ancient time. The present-day chemical industries have been evolved from the early practices of the Alchemists. Chemistry as a discipline encompasses a wide range of areas. It has always been devoted to the welfare of human and its environment. Therefore, in this age of information technology, it is necessary for all to know where and with which processes chemistry is involved in so that we can be benefited from applying the knowledge in our daily life.
EV HSC Chemistry 1st Paper MCQ Question Answer 2020
EV HSC Chemistry 1st Paper MCQ Question Answer
|1. Safe use up Laboratory|
|2. Qualitative Chemistry|
|3. Periodic Properties and Chemical Bonding of Elements|
|4. Chemical Changes|
|5. Vocational Chemistry|
Chemistry is one of the ancient and main disciplines of sciences. Various kinds of changes such as formation, destructions, growth, transformation, production, etc. are discussed in chemistry. The practice of chemistry has been continuing for a number of millennia. The process of beautifying clothes by applying dyes was on track in the Indian subcontinent about 5000 years ago. Men started making metallic weapons, columns, and statues quite a long ago. In ancient times, precious metals like gold, silver, lead, etc. were extracted from mines using chemical technologies.
Chemistry is the study of matter, its properties, how and why substances combine or separate to form other substances, and how substances interact with energy. Many people think of chemists as being white-coated scientists mixing strange liquids in a laboratory, but the truth is we are all chemists.
There are five main branches of chemistry, each of which has many areas of study.
Analytical chemistry uses qualitative and quantitative observation to identify and measure the physical and chemical properties of substances. In a sense, all chemistry is analytical.
Physical chemistry combines chemistry with physics. Physical chemists study how matter and energy interact. Thermodynamics and quantum mechanics are two of the important branches of physical chemistry.
Organic chemistry specifically studies compounds that contain the element carbon. Carbon has many unique properties that allow it to form complex chemical bonds and very large molecules. Organic chemistry is known as the “Chemistry of Life” because all of the molecules that make up living tissue have carbon as part of their makeup.
Inorganic chemistry studies materials such as metals and gases that do not have carbon as part of their makeup.
Biochemistry is the study of chemical processes that occur within living organisms.
Geochemists combine chemistry and geology to study the makeup and interaction between substances found in the Earth. Geochemists may spend more time in field studies than other types of chemists. Many works for the U.S. Geological Survey or the Environmental Protection Agency in determining how mining operations and waste can affect water quality and the environment. They may travel to remote abandoned mines to collect samples and perform rough field evaluations, and then follow a stream through its watershed to evaluate how contaminants are moving through the system.
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