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प्रश्न
______ react with dil. HNO3 to evolve hydrogen gas.
विकल्प
Iron and copper
Manganese and magnesium
Zinc and manganese
Aluminium and magnesium
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उत्तर
Manganese and magnesium react with dil. HNO3 to evolve hydrogen gas.
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संबंधित प्रश्न
Write a balanced chemical equations for Heating of Ethanol at 170°C in the presence of conc. Sulphuric acid
Give the structural formula of Ethanol
Draw the structures for the following compounds:
Ethanal
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
Give the lab. Prepared of methyl alcohol.
How is the methylated spirit obtained?
With a labelled diagram describe an activity to show the formation of an ester.
Give two uses each of:
(i) Methane (ii) ethane
Write a balanced chemical equation for the following:
Ethanol reacts with sodium at room temperature.
State how the following conversion can be carried out:
Ethene to ethyl alcohol
What are hydrocarbons? Give one example.
Answer the following question.
Why is the conversion of ethanol to ethanoic acid considered an oxidation reaction? Write the oxidizing agent used in the reaction involved.
Ethanol is soluble in water in all proportions.
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 | → |
Ethanol is also known as which of these?
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 balanced chemical equation of the following reaction:
Oxidation of ethanol by acidified potassium dichromate.
Give the balanced chemical equation of the reactions.
Neutralization of NaOH with ethanoic acid.
