Start learning →

Chhattisgarh Board Class 12 (CGBSE) Class 12 Chemistry — practice questions

Explore 30 free Class 12 Chemistry questions in Chhattisgarh Board Class 12 (CGBSE) Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

Practise Class 12 Chemistry with Quill →

Class 12 Chemistry questions and exercises with answers

Showing questions 1–30 of 30.

A compound with a hydroxyl group joined to a saturated carbon chain is an:Read the answer and worked solution →A compound with a hydroxyl group joined directly to a benzene ring is a:Read the answer and worked solution →Dimethyl ether shows the family in which oxygen links two carbon groups. It is an:Read the answer and worked solution →A compound carrying two hydroxyl groups is described as:Read the answer and worked solution →An alcohol whose hydroxyl group sits on a carbon joined to three other carbons is:Read the answer and worked solution →An alcohol with the hydroxyl group attached to a carbon next to a double bond is called:Read the answer and worked solution →An alcohol with the hydroxyl group on a carbon attached to a benzene ring is called:Read the answer and worked solution →Diethyl ether has two identical groups on the oxygen, so it is called:Read the answer and worked solution →In the common naming system, CH3OH is called methyl:Read the answer and worked solution →Boiling points of alcohols and phenols rise as the size of the molecule:Read the answer and worked solution →Alcohols boil at much higher temperatures than ethers of similar mass because alcohols show:Read the answer and worked solution →The solubility of alcohols in water falls as the length of the carbon chain:Read the answer and worked solution →Compared with an alcohol, a hydroxyl group attached to an aromatic ring is:Read the answer and worked solution →The reagent of concentrated hydrochloric acid with zinc chloride used to tell alcohols apart is:Read the answer and worked solution →Nitrating phenol fully gives 2,4,6 trinitrophenol, commonly known as:Read the answer and worked solution →Treating phenol with chloroform and alkali to add an aldehyde group is the:Read the answer and worked solution →Treating sodium phenoxide with carbon dioxide to make salicylic acid is known as:Read the answer and worked solution →Ortho and para nitrophenols compared with plain phenol are:Read the answer and worked solution →Ethers can be prepared by Williamson synthesis or by the dehydration of:Read the answer and worked solution →In Williamson synthesis, an alkyl halide reacts with sodium:Read the answer and worked solution →Heating an alcohol with acid to remove water and form an alkene is called:Read the answer and worked solution →Compared with alcohols of similar mass, ethers have boiling points that are:Read the answer and worked solution →Catch the alcoholsRead the answer and worked solution →Pop the alcohol classesRead the answer and worked solution →Run the organic gatesRead the answer and worked solution →Slice the organic termsRead the answer and worked solution →Alcohol or etherRead the answer and worked solution →Sort the organic factsRead the answer and worked solution →Type the numberRead the answer and worked solution →Organic bingoRead the answer and worked solution →

Worked practice questions

A compound with a hydroxyl group joined to a saturated carbon chain is an:

  1. Alcohol
  2. Aldehyde
  3. Ammonia
  4. Alkanes
Show answer and solution

Correct answer: A. Alcohol

1. The functional group here is the hydroxyl group. 2. It sits on an aliphatic carbon. 3. So the compound is an alcohol. _Source: syllabus Chemistry Part II, Class XII, Alcohols, Phenols and Ethers._

Open this question →

A compound with a hydroxyl group joined directly to a benzene ring is a:

  1. Phosphine
  2. Phenol
  3. Phthalate
  4. Phosphate
Show answer and solution

Correct answer: B. Phenol

1. The hydroxyl group is on an aromatic ring. 2. That arrangement has its own family name. 3. The compound is a phenol. _Source: syllabus Chemistry Part II, Class XII, Alcohols, Phenols and Ethers._

Open this question →

Dimethyl ether shows the family in which oxygen links two carbon groups. It is an:

  1. Ether
  2. Ester
  3. Epoxide
  4. Ethanal
Show answer and solution

Correct answer: A. Ether

1. Oxygen sits between two alkyl or aryl groups. 2. No hydroxyl hydrogen remains. 3. So the compound is an ether. _Source: syllabus Chemistry Part II, Class XII, Alcohols, Phenols and Ethers._

Open this question →

How to practise

  1. Choose a Class 12 Chemistry question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Chemistry topics

Alcohols Phenols and EthersChemistry