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प्रश्न
Sodium is stored under kerosene. Give reason.
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उत्तर
1. Sodium is one of the most reactive metals.
2. Sodium reacts with oxygen in the air, at room temperature, to form sodium oxide.
\[\ce{4Na + O2 -> 2Na2O}\]
3. Sodium reacts with water vapour but not with kerosene.
4. Sodium sinks in kerosene due to this it does not come in contact with air.
Hence, to prevent sodium from burning, it is stored in kerosene.
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संबंधित प्रश्न
Give the structural formula of ethanol.
Give two properties of ethanol.
Name the compound formed when ethanol is heated in excess of conc. sulphuric acid at 443 K. Also, write the chemical equation of the reaction stating the role of conc. sulphuric acid in it. What would happen if hydrogen is added to the product of this reaction in the presence of a catalyst such as palladium or nickel?
Write the molecular formula of the 2nd and the 3rd member of the homologous series whose first member is methane.
Draw the structure for the following compound:
Propanal
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Give the lab. Prepared of methyl alcohol.
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List in tabular form three physical and two chemical properties on the basis of which ethanol and ethanoic acid can be differentiated.
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Choose the correct word or phrase from the options given below to complete the following sentences:
Converting ethanol to ethene requires the use of_________(Concentrated hydrochloric acid, concentrated nitric cid, concentrated sulphuric acid).
Ethane, Ethene, Ethanoic acid, Ethyne, Ethanol
From the compounds given above, name:
- The compound with –OH as a part of its structure.
- The compound with –COOH as a part of its structure.
- Homologue of homologous series with general formula CnH2n.
Give the structural formula of the following:
Ethanoic acid
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Choose the correct alternative and rewrite the following:
To observe the hydro and clearly, Raju should see it first under the low power lens and then under the high power lens in order to see _____________
Give the balanced chemical equation of the following reaction:
Oxidation of ethanol by acidified potassium dichromate.
Draw the electron dot structure of ethyne and also draw its structural formula
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:
Oxidation of ethanol by acidified potassium dichromate.
Give the balance chemical equation of the following reaction:
Combustion of ethanol.
