Download App

Carbon and its Compounds — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceCarbon and its Compounds3 Marks
Question
What would be observed on adding a 5% alkaline potassium permanganate solution drop by drop to some warm ethanol in a test-tube? Write the name of the compound formed during the chemical reaction. Also write chemical equation of the reaction which takes place.
✓

Answer

On adding 5% alkaline potassium permanganate solution drop by drop to some warm ethanol, we would observe that the purple color of potassium permanganate starts disappearing; the product formed by this process; ethanoic acid can turn blue litmus red.

$\text{CH}_3\text{CH}_2\text{OH}+2[\text{O}]\xrightarrow[{\text{or}\ \text{acidified}\text{K}_2\text{Cr}_2}\text{O}_7]{{ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{Alkaline}\text{KmnO}_4;\text{Heat}}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ }\text{CH}_3\text{COOH}+\text{H}_2\text{O}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the questions.[Che-3M]" from Carbon and its Compounds→Carbon and its Compounds — all question types→Science STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

Write the name and general formula of a chain of hydrocarbons in which an addition reaction with hydrogen is possible. State the essential condition for an addition reaction. Stating this condition, write a chemical equation giving the name of the reactant and the product of the reaction.
→
Consider the following salts:
Na2CO3, NaCl, NH4Cl, CH3COONa, K2SO4, (NH4) SO4 Which of these salts will give:
  1. Acidic solutions?
  2. Neutral solutions?
  3. Basic solutions (or alkaline solutions)?
→
A non-metal X exists in two different forms Y and Z. Y is the hardest natural substance, whereas Z is a good conductor of electricity. Identify X, Y and Z.
→
Why could no fixed position be given to hydrogen in Mendeleev’s periodic table?
→
How does the method used for extracting a metal from its ore depend on the metal’s position in the reactivity series? Explain with examples.
→
How can ethanol and ethanoic acid be differentiated on the basis of their physical and chemical properties?
→
A compound X which is prepared from gypsum has the property of hardening when mixed with a proper quantity of water.
  1. Identify the compound X,
  2. Write the chemical equation for its preparation.
  3. For what purpose is it used in hospitals?
→
A sulphate salt of Group 2 element of the Periodic Table is a white, soft substance, which can be moulded into different shapes by making its dough. When this compound is left in open for some time, it becomes a solid mass and cannot be used for moulding purposes. Identify the sulphate salt and why does it show such a behaviour? Give the reaction involved.
→
Identify the type of reactions taking place in each of the following cases and write the balanced chemical equation for the reactions.
  1. Zinc reacts with silver nitrate to produce zinc nitrate and silver.
  2. Potassium iodide reacts with lead nitrate to produce potassium nitrate and lead iodide.
→
A dry pellet of a common base B, when kept in open absorbs moisture and turns sticky. The compound is also a by–product of chloralkali process. Identify B. What type of reaction occurs when B is treated with an acidic oxide? Write a balanced chemical equation for one such solution.
→