Tag: uses of alcohols

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Multiple choice chemistry chemical reactions of organic compounds commercially important alcohols - methanol methanol some commercially important alcohols uses of alcohols

Identify the correct set representing properties of Methanol.

  1. Colourless, volatile, poisonous, miscible

  2. Colourless, volatile, non-poisonous, miscible

  3. Colourless, volatile, poisonous, immiscible

  4. Colourless, non-volatile, poisonous, miscible
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Methanol is a light, volatile, colorless, miscible, flammable liquid with a distinctive odor very similar to that of ethanol (drinking alcohol).

Multiple choice chemistry chemical reactions of organic compounds commercially important alcohols - methanol methanol some commercially important alcohols uses of alcohols

Destructive distillation of wood in the laboratory will result in the formation of :

  1. Ethanol

  2. Methane

  3. Methanol

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

Methanol acquired the name "wood spirit" because it was once produced chiefly as a byproduct of the destructive distillation of wood.

Multiple choice chemistry chemical reactions of organic compounds commercially important alcohols - methanol methanol some commercially important alcohols uses of alcohols

Methanol is never stored in aluminium vessel because:

  1. it reacts with aluminium forming toxic gas

  2. it results in explosion

  3. it corrodes the the metal by destroying its oxide layer

  4. aluminium reduces methanol to methane
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Aluminum and its alloys resist most alcohols, however, some alcohols like methanol can be very corrosive when  extremely dry, especially at elevated temperatures.

Multiple choice chemistry chemical reactions of organic compounds commercially important alcohols - methanol methanol some commercially important alcohols uses of alcohols

Which of the following does NOT involve application of Methanol?

  1. As a solvent

  2. As an anti-freeze in pipelines

  3. In consumable liquor

  4. In Windshield washer fluid
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Methanol is toxic in nature and very unfit for drinking purposes.Its consumption can lead to early blindness and further causing death.

Multiple choice chemistry chemical reactions of organic compounds commercially important alcohols - methanol methanol some commercially important alcohols uses of alcohols

Methanol is called as Marine Methanol beacuse:

  1. it is an essential compound for marine life

  2. it is mostly obtained from deep sea bed

  3. it is used as a marine fuel

  4. it serves as a signal indicator for big ships on burning
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Currently, methanol is being developed and utilized as a marine fuel. Interest in methanol as a ship fuel is growing in response to international regulatory changes and cost advantages relative to other fuels. Methanol is an alternative which is sulphur free, has low emissions; perhaps three to four times cheaper than marine distillate fuel; and has a higher score on the International Martine Organization (IMO) energy efficiency design index (EEDI)than LNG or diesel. Globally, Methanol is already in widespread production (~70 million tons per annum) for a multitude of chemical and energy applications, and is one of the world’s most widely shipped chemicals.

Multiple choice chemistry chemical reactions of organic compounds commercially important alcohols - methanol methanol some commercially important alcohols uses of alcohols

Trivial name of methanol is _________ .

  1. wood spirit

  2. methyl alcohol

  3. wood alcohol

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

Methanol is known as methyl alcohol, wood alcohol, wood naphtha or wood spirit because it was once produced as a byproduct of the destructive distillation of wood.

Multiple choice chemistry chemical reactions of organic compounds commercially important alcohols - methanol methanol some commercially important alcohols uses of alcohols

From methyl alcohol we get:

  1. bakelite, a hard plastic

  2. the rubber neoprene

  3. the plastic perspex

  4. sponge rubber
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Solution:- (A) bakelite, a hard plastic.

Explanation:-
Methyl alcohol on reaction with formaldehyde at room temperature and pressure gives bakelite.

Multiple choice chemistry chemical reactions of organic compounds commercially important alcohols - methanol methanol some commercially important alcohols uses of alcohols

The compound (s) used as an antifreeze in radiators of automobiles is/are?

  1. methyl alcohol

  2. ethyl alcohol

  3. ethyl alcohol + water

  4. methyl alcohol + water
Reveal answer Fill a bubble to check yourself
C,D Correct answer
Explanation

Anitfreeze agents work to prevent the vehicle from overheating in summers and freezing in winters. The anifreeze agents used are ;ethyl alcohol + water and methyl alcohol + water.