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प्रश्न
What is meant by denatured alcohol? What is the need to denature alcohol?
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उत्तर
Denatured alcohol is ethyl alcohol in which small amounts of poisonous substances like methanol and copper sulphate are added to make it unfit for consumption.
Ethyl alcohol is used for manufacturing various products in different industries. Therefore, government supplies ethyl alcohol to the industries without charging production tax. In order to prevent the misuse of ethyl alcohol for drinking purposes, it is denatured by adding poisonous substances such as methanol, pyridine or copper. This makes the alcohol unfit for consumption.
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संबंधित प्रश्न
Give two properties of ethanol.
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
Write the molecular formula of ethanol.
What is the common name of methanal?
Fill in the following blank with suitable word.
The functional group present in ethanol is ...............
The usual disease caused by the excessive drinking of alcohol over a long period of time is:
(a) diabetes
(b) cataract
(c) cirrhosis
(d) arthritis
How is the absolute alcohol obtained?
What would you see, when ethyne is bubbled through a solution of bromine in carbon tetrachloride?
How is methane gas prepared in laboratory?
Give two uses each of:
(i) Methane (ii) ethane
Write the equations of chlorination of ethane
Name a solid which can be used, instead of conc H2SO4 to prepare ethylene by dehydration of ethanol.
What are the functional groups? Name any two compounds containing functional groups.
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.
- How is a 5% solution of KMnO4 prepared?
- State the role of alkaline potassium permanganate in this reaction. What happens on adding it in excess?
- Write the chemical equation of this reaction.
Complete the following activity.
| Boiling point of ethanol | → | |
| General name of ethanol | → | |
| Use of ethanol | → | |
| Boiling point of ethanoic acid | → | |
| Melting point of pure ethanoic acid | → |
Give the balanced chemical equation of the following reaction:
Combustion of ethanol.
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:
Oxidation of ethanol by acidified potassium dichromate.
