What does secondary evidence mean?

What does secondary evidence mean?

Secondary evidence is evidence that has been reproduced from an original document or substituted for an original item. For example, a photocopy of a document or photograph would be considered secondary evidence. Courts prefer original, or primary, evidence. They try to avoid using secondary evidence wherever possible.

How do you Analyse a secondary source?

Consider the following when looking for reliable secondary sources:

1. Who is the author?
2. Was the book/ journal published by a scholarly publisher?
3. What is the purpose of the text or motive for writing it?
4. Does the writer have an obvious bias?
5. Does the book/ article have an extensive bibliography?

Why is a textbook an example of secondary source?

In most cases, the author of a textbook interprets prescribed theories of a topic and would, therefore, be a secondary source. Finally, if you were to research the development of textbooks during a specific time period, then a textbook could be used as a primary source.

How many primary secondary and tertiary hydrogen are there?

The number of primary hydrogen atoms are 9. The number of tertiary hydrogen atoms are 1. The number of secondary carbon atoms is 0.

How do you classify alkyl halides primary secondary and tertiary?

organohalogen compounds classified as primary, secondary, or tertiary according to the degree of substitution at the carbon to which the halogen is attached. In a primary alkyl halide, the carbon that bears the halogen is directly bonded to one other carbon, in a secondary alkyl halide to two, and in a tertiary…

Can secondary carbons have double bonds?

In the middle of a chain, a double bond could be connected to two carbons. This is called secondary (2°). The most stable would be quaternary (4°).

Which of the following is secondary radical?

Hence, CH2=CH is a secondary radical.

What is a secondary radical?

A secondary (2°) alkyl radical is an alkyl radical in which the carbon atom bearing the unpaired electron is bonded to two carbon atoms. See also primary alkyl radical and tertiary alkyl radical.

Which of the following are tertiary radical?

Tertiary radical is a radical in which the Carbon atom is bonded to three more alkyl group. In compounds (a) and (c) the Carbon atom is bonded to three alkyl group thus option C is correct.

What is a carbon radical?

➢Carbon radical is a neutral carbon species with three single bonds and one unpaired electron.

What are radicals give two examples?

Radical (chemistry)

• In chemistry, a radical is an atom, molecule, or ion that has an unpaired valence electron.
• A notable example of a radical is the hydroxyl radical (HO•), a molecule that has one unpaired electron on the oxygen atom.
• Radicals may be generated in a number of ways, but typical methods involve redox reactions.

What are basic radicals examples?

Basic radicals are formed by the removal of hydroxide ion (OH–). Example: H2S04 loses one H+ ion to form HSO4– ion. Example: KOH loses OH– ion and becomes K+ ion.

What is difference between radical and ion?

An ion carries a charge, that means that the number of electrons and protons do not match. A radical has an unpaired electron, but does not have a net charge because the number of protons equals the number of electrons.

What are the types of radicals?

There are two kinds of radicals, neutral radicals and charged radicals as shown below. Moreover, there are two types of radicals the sigma radicals and the pi radicals. An unpaired electron in the sigma-radical is in the sigma orbital and an unpaired electron in the pi radical is in the pi orbital respectively.