Chemistry · Science General

Alcohols, Ethers and Carboxylic Acids

391 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
  1. Eschenmoser's salt

  2. Reinecke's salt

  3. Frémy's salt

  4. Cornforth salt

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Cornforth salt or pyridinium dichromate (PDC) is a pyridinium salt of dichromate. It is a strong oxidizing agent which can convert primary and secondary alcohols to ketones. In its chemical structure and functions, it is closely related to other compounds made from hexavalent chromium oxide, such as pyridinium chlorochromate and Collins reagent.

Multiple choice
  1. Acetone

  2. Toluene

  3. Acrylamide

  4. Phenol

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The pure and effective chemical, Toluene, is also known as methyl benzene. This aromatic hydrocarbon is widely used as a solvent and an industrial feedstock. Due to its intoxicating attributes, it is widely used as inhalant drug such as other solvents. Toluene is a clear water-insoluble liquid that smells like paint thinners.

Multiple choice
  1. Methanol

  2. PG (Propylene Glycol)

  3. Citric Acid

  4. Ethyl Acetate

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Citric Acid is widely known for its toxic elements and accurate composition. This anhydrous acts as a natural preservative, which is used to enhance sour or acidic taste in soft drinks and foods. Moreover, due to its varied properties, this acid is extensively used as an environmentally benign cleaning agent.

Multiple choice
  1. Triethyl orthoacetate

  2. Triethyl phosphonoacetate

  3. Triethyloxonium tetrafluoroborate

  4. Dimethyl malonate

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Triethyl orthoacetate is the ethyl orthoester of acetic acid. It is also known as 1,1,1-triethoxyethane, and is an oily liquid with a colour that is anywhere from yellow to colourless. It is used in organic synthesis for the introduction of the acetate group to an alcohol. It is also used in the Johnson-Claisen rearrangement.

Multiple choice
  1. Acetyl chloride

  2. AD-mix

  3. Anhydrous aluminium trichloride

  4. Armstrong's acid

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Armstrong's acid is a strong acid which is related to toluenesulphonic acid and is used in chemical synthesis. It is sometimes used as a divalent counterion for forming salts of basic drug compounds, as an alternative to the related mesylate or tosylate salts.

Multiple choice
  1. 9-Borabicyclo[3.3.1]nonane

  2. 1,2-Ethanedithiol

  3. Benzyltrimethylammonium fluoride

  4. Benzyltrimethylammonium hydroxide

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Benzyltrimethylammonium hydroxide, also known as Triton B or trimethylbenzylammonium hydroxide, is an organic base. It is used in aldol condensation reactions and base-catalyzed dehydration reactions.

Multiple choice
  1. The Cornforth reagent

  2. The Collins reagent

  3. The Nysted reagent

  4. The Olah reagent

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Cornforth reagent is a strong oxidizing agent which can convert primary and secondary alcohols to ketones. In its chemical structure and functions, it is closely related to other compounds made from hexavalent chromium oxide, such as pyridinium chlorochromate and Collins reagent.

Multiple choice
  1. Diethylaminosulphur trifluoride

  2. Diethylzinc

  3. Diisopinocampheylborane

  4. 2,2-Dimethoxypropane

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Diisopinocampheylborane is an organoborane that is useful for asymmetric synthesis. This colourless solid is the precursor to a range or related reagents. The reagent is mainly used for the synthesis of chiral secondary alcohols.

Multiple choice
  1. iodobenzene dichloride

  2. 2-iodoxybenzoic acid

  3. lithium bis(trimethylsilyl)amide

  4. lithium diisopropylamide

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

IBX acid or 2-iodoxybenzoic acid is an organic compound used in organic synthesis as an oxidising agent. This Periodinane is especially suited to oxidise alcohols to aldehydes.

Multiple choice
  1. dimethoxymethane

  2. dioxolane

  3. metaldehyde

  4. paraldehyde

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Dioxolane is an heterocyclic acetal. It is related to tetrahydrofuran by interchange of one oxygen for a CH2 group. The corresponding saturated 6-membered C4O2 rings are called dioxanes. The isomeric 1,2-dioxolane (wherein the two oxygen centers are adjacent) is an peroxide. 1,3-dioxolane is used as a solvent and as a comonomer in polyacetals.

Multiple choice
  1. The Monsanto process

  2. The Shell higher olefin process

  3. Olefin metathesis

  4. Alkane metathesis

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Monsanto process is an important method for the manufacture of acetic acid by catalytic carbonylation of methanol. This process operates at a pressure of 30-60 atm and a temperature of 150-200 °C and gives a selectivity greater than 99%.

Multiple choice
  1. The Monsanto process

  2. The Shell higher olefin process

  3. Olefin metathesis

  4. Silylmetalation

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Monsanto process is an important method for the manufacture of acetic acid by catalytic carbonylation of methanol. This process operates at a pressure of 30-60 atm and a temperature of 150-200 °C and gives a selectivity greater than 99%.