मराठी

Draw the Structures for the Following Compounds: (I) Ethanal (Ii) Propanal (Iii) Butanal (Iv) Pentanal - Science

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प्रश्न

Draw the structures for the following compounds of Pentanal

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उत्तर

Molecular structures of the compounds are as follows:

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पाठ 4: Carbon And Its Compounds - Exercise 2 [पृष्ठ २४२]

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लखमीर सिंह Chemistry (Science) [English] Class 10
पाठ 4 Carbon And Its Compounds
Exercise 2 | Q 39.5 | पृष्ठ २४२

व्हिडिओ ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्‍न

The compound formed when ethene reacts with Hydrogen is ________. (CH4, C2H6, C3H8)


The catalyst used in the contact process is

(A) Copper

(B) Iron

(C) Vanadium pentoxide

(D) Manganese dioxide


Three organic compounds A, B and C have the following molecular formulae: C4H8O2

Which compound contains an alcohol group? Write its name and structural formula.


Name the hydrocarbon formed when ethanol is heated with conc. H2SO4 at 170°C? What is this reaction known as?


Explain why, methanol is much more dangerous to drink than ethanol.

 

Write the name and molecular formula of an organic compound having its name suffixed with 'ol' and having two carbon atoms in its molecule. Write balanced chemical equation to indicate what happens when this compound is heated with excess conc. H2SO4 and the name of main product formed. Also state the role of conc. H2SO4 in the reaction.


What is meant by a functional group in carbon compounds?


Name the following:

Oxidising agent used to convert ethanol to acetic acid.


Ethanol can be converted to ethene which can be changed to ethane.

Choose the correct word or phrase from the options given below to complete the following sentences:

The conversion of ethanol to ehane is an example of_________(dehydration, dehydrogenation)


Write balanced equations to show the preparation of the following:

Ethene from ethanol


Write a balanced chemical equation for the following:

Ethanol under high pressure and low temperature is treated with acidified potassium dichoromate.


Write the equation for the following lab preparation:

Methanol from iodomethane.


Write the structural formulae of the following compound:

Ethane


3 mL of ethanol is taken in a test tube and warmed gently in a water bath. A 5% solution of alkaline potassium permanganate is added to the first drop by drop to this solution, then in excess.

  1. How is a 5% solution of KMnO4 prepared?
  2. State the role of alkaline potassium permanganate in this reaction. What happens on adding it in excess?
  3. Write the chemical equation of this reaction.

How is ethanoic acid prepared from ethanol? Give the chemical equation.


An organic compound ‘A’ is widely used as a preservative and has the molecular formula C2H4O2. This compound reacts with ethanol to form a sweet-smelling compound ‘B’.

Name the process.


What is the role of concentrated Sulphuric acid when it is heated with Ethanol at 443 K. Give the reaction involved.


Give the balanced chemical equation of the following reaction:

Neutralization of NaOH with ethanoic acid.


Give the balanced chemical equation of the following reaction: 

Oxidation of ethanol by acidified potassium dichromate.


Give the balanced chemical equation of the following reaction:

Combustion of ethanol.


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