Chemistry · Science General

Alcohols, Ethers and Carboxylic Acids

359 Questions

Alcohols, ethers, and carboxylic acids questions explore organic chemistry reactions, chemical formulas, and compound identifications. The topics cover practical applications like antifreeze production and specific chemical conversions. This material helps candidates preparing for science oriented competitive exams.

Organic reactionsChemical compounds identificationAlcohol conversionCarboxylic acid propertiesIndustrial chemical applications

Alcohols, Ethers and Carboxylic Acids Questions

Multiple choice chemistry hydroxy compounds and ethers chemical properties of ethers ethers alcohols, phenols and ethers

Ethers are considered as ____.

  1. mono alkyl derivatives of water

  2. alkoxy derivations of alkanes

  3. alkyl derivatives of fatty acids.

  4. condensation product of acid and alcohol.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ethers can be viewed as derivatives of hydrocarbons where a hydrogen atom is replaced by an alkoxy group (-OR), making them alkoxy derivatives of alkanes. Alternatively, they can be seen as dialkyl derivatives of water.

Multiple choice chemistry hydroxy compounds and ethers chemical properties of ethers ethers alcohols, phenols and ethers

Isopropyle methyl ether when treated with cold hydrogen iodide gives

  1. isopropyl iodide and methyl iodide

  2. isopropyl alcohol and methyl iodide

  3. isopropyl alcohol and methyl alcohol

  4. isopropyl iodide and methyl alcohol
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cleavage of ethers with HI follows an SN2 mechanism for primary/secondary alkyl groups. Isopropyl methyl ether yields isopropyl alcohol and methyl iodide.

Multiple choice chemistry hydroxy compounds and ethers chemical properties of ethers ethers alcohols, phenols and ethers

Ethyl phenyl ether on boiling with conc. HBr gives: 

  1. phenol and ethane

  2. bromobenzene and ethane

  3. phenol and ethyl bromide

  4. bromobenzene and ethanol
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ethyl phenyl ether, an alkyl aryl ether, undergoes cleavage upon heating with concentrated HBr to yield phenol and an alkyl halide. Because the oxygen-phenyl bond has partial double bond character due to resonance, cleavage occurs at the alkyl-oxygen bond, producing phenol and ethyl bromide.

Multiple choice chemistry the s-block elements (alkali and alkaline earth metals) uses of alkali and alkaline earth metals uses of s block elements group 1 elements: alkali metals

Which of the following product is obtained when bleaching powder is distilled with acetone?

  1. $CCl _4$
  2. $CH _2Cl _2$
  3. $CH _3 -CH _3$

  4. none of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bleaching powder (calcium hypochlorite) acts as an oxidizing and chlorinating agent. Distilling it with acetone typically produces chloroform (CHCl3), not the options listed.

Multiple choice chemistry chemical equilibrium equilibrium in physical processes introduction to equilibrium chemical equilibrium and acids-bases

Which of the following solutions show positive deviation from Raoult's law?

  1. Acetone + Ethanol

  2. Acetone + Benzene

  3. Water + Methanol

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Positive deviation from Raoult's law occurs when the solute-solvent interactions are weaker than the solute-solute and solvent-solvent interactions. All the listed pairs (Acetone+Ethanol, Acetone+Benzene, Water+Methanol) exhibit this behavior.

Multiple choice chemistry chemical equilibrium equilibrium in physical processes introduction to equilibrium chemical equilibrium and acids-bases

Which of the following solutions does not  show positive deviation? 

  1. Acetone and Ethanol

  2. Toluene and Benzene

  3. Water and Ethanol

  4. Water and Methanol
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Toluene and Benzene form an ideal solution because their molecules are very similar in size and polarity, meaning they do not show significant positive or negative deviations from Raoult's law.

Multiple choice biology caskets of life observation of cells observing cells cell as structural and functional unit

Temporary mount of a peel is made in :

  1. Alcohol

  2. Water

  3. Glycerine

  4. Acetone
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Temporary mount of a leaf peel is used to observe stomata. Stomata are small openings found widely scattered on the epidermis of leaves and young stems.
Glycerine is a dehydrating agent. Once glycerine is added it forms a protective layer that keeps it moistened. It avoids the drying of the specimen. If staining is done after adding glycerine then the specimen will not be stained properly because the stain will be washed off with glycerine.
Hence C is the option. 
Multiple choice biology caskets of life observation of cells observing cells cell as structural and functional unit

Temporary mount of a peel is made in :

  1. Alcohol

  2. Water

  3. Glycerine

  4. Acetone
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Temporary mount of a leaf peel is used to observe stomata. Stomata are small openings found widely scattered on the epidermis of leaves and young stems.
Glycerine is a dehydrating agent. Once glycerine is added it forms a protective layer that keeps it moistened. It avoids the drying of the specimen. If staining is done after adding glycerine then the specimen will not be stained properly because the stain will be washed off with glycerine.
Multiple choice chemistry aldehydes, ketones and carboxylic acids uses of aldehydes and ketones organic compounds with functional group containing oxygen (part-2) carbonyl compounds

Which of the following aldehyde is very much used in perfumery and in dye industries?

  1. Formaldehyde

  2. Acetaldehyde

  3. Benzaldehyde

  4. Butyraldehyde
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Benzaldehyde is much used perfumery industries because it has bitter almond odor and also it is used for making aniline dye.
Multiple choice chemistry aldehydes, ketones and carboxylic acids uses of aldehydes and ketones organic compounds with functional group containing oxygen (part-2) carbonyl compounds

Which of the following doesn't use acetaldehyde as a starting material in its preparation?

  1. Ethyl acetate

  2. Ethanoic acid

  3. Methanoic acid

  4. Drugs
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Methanoic acid needs only single carbon compound  not acetaldehyde.
$HCOOH$-formic acid/Methanoic acid.
Multiple choice chemistry aldehydes, ketones and carboxylic acids uses of aldehydes and ketones organic compounds with functional group containing oxygen (part-2) carbonyl compounds

Benzaldehyde is used:

  1. as a flavouring agent for food

  2. in the manufacture of triphenylmethane dyes like malachite green

  3. as a starting material for the preparation of cinnamic acid

  4. all of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Benzaldehyde is used as flavoring agent, manufacture of dyes like triphenylmethane dyes and also as starting material for the preparation of cinnamic acid.

Multiple choice chemistry aldehydes, ketones and carboxylic acids uses of aldehydes and ketones organic compounds with functional group containing oxygen (part-2) carbonyl compounds

Which of the following statement is true?

  1. Benzaldehyde is used in perfumery industry

  2. Formaldehyde is used for silvering mirrors

  3. Acetone is used as a commercial solvent

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A. Benzaldehyde is used in perfumery
B. Formaldehyde is used for silvering mirrors because of its aldehydic group.
C. Acetone is used as a commercial solvent for the various organic compound.