Question

Assertion (A): Hydroxyl group (–OH) is a functional group.
Reason (R): The functional group is defined as an atom or group of atoms joined in a specific manner with characteristic chemical properties of the organic compounds.​

Answer 1

Answer:

Solution

The correct option is B Assertion is true but reason is false.

Not all alcohols have properties similar to that of water. Alcohols that have less than five carbon atoms in their hydrocarbon chain have properties similar to that of water due to the hydroxyl group, i.e, in terms of polarity, solubility and ability to form hydrogen bonds with other alcohol molecules. Alcohols that have more than six carbon atoms have properties different from that of water since the hydrocarbon chain affects the hydroxyl group due to its large carbon chain making it less soluble in water and the difficulty to form hydrogen bonds with other alcohols.

Chemistry

Explanation:

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Answer 2

Full question:

Assertion (A): Hydroxyl group ($-OH$) is a functional group.

Reason (R): The functional group is defined as an atom or group of atoms joined in a specific manner with characteristic chemical properties of the organic compounds.

Choose the correct option.

($1$) Both A and R are true and R is the right explanation for the given A.

($2$) Both A and R are true but R is not the right explanation for the given A.

($3$) A is true but R is false.

($4$) A is false but R is true.

Final answer:

The right answer is option ($1$) Both A and R are true and R is the right explanation for the given A.

Given that: We are given an assertion and reason.

To find: We have to find the correct option.

Explanation:

Functional group:

• It is a group of an atom within a molecule that is responsible for the chemical characteristics of that molecule (compound).

• A series of organic compounds with a similar formula and they are possessing similar chemical properties due to the presence of the same functional group.

Alcohols are all made up of the functional group $-OH$ (hydroxyl group).

• They have names that finish with 'ol', like ethanol ($C_{2}H_{5}OH$) and methanol ($CH_{3}OH$).

• Homologous series of alcohol ($R-OH$) having similar chemical characteristics.

Hence the required answer is option ($1$) Both A and R are true and R is the right explanation for the given A.

• The chemical characteristics of an organic compound depend on its functional group.
• Alcohol falls under the homologous series have similar chemical properties.

Hence option ($2$) Both A and R are true but R is not the right explanation for the given A, option ($3$) A is true but R is false, and option ($4$) A is false but R is true, which are wrong answers.

To know more about the concept please go through the links

https://brainly.in/question/2182590

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