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प्रश्न
Arrange the following statements in correct sequence
- Pour that solution into an empty matchbox, soap can be obtained after drying.
- Take the necessary quantity of water in a jar.
- Then add coconut oil drop by drop and stir it well.
- Add concentrated sodium hydroxide in the jar and allow it to cool.
- Try this soap to wash your hand kerchief.
- Cover your work area with old newspaper.
उत्तर
6. Cover your work area with old newspaper.
2. Take necessary quantity of water in a jar.
4. Add concentrated sodium hydroxide in the jar and allow it to cool.
3. Then add coconut oil drop by drop and stir it well.
1. Pour that solution into an empty matchbox, soap can be obtained after drying.
5. Try this soap to wash your hand kerchief.
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संबंधित प्रश्न
People use a variety of methods to wash clothes. Usually after adding the soap, they ‘beat’ the clothes on a stone, or beat it with a paddle, scrub with a brush or the mixture is agitated in a washing machine. Why is agitation necessary to get clean clothes?
State one use of saponification process.
Explain esterification reaction with the help of a chemical equation. Describe an activity to show esterification.
What change will you observe if you test soap solution with a litmus paper (red and blue)? Give reason for your observation.
Use of synthetic detergents causes pollution of water.
Why is soap not suitable for washing clothes when the water is hard?
Consider the following oils :
(I) Mobil oil
(II) Castor oil
(III) Turpentine oil
(IV) Kerosene
(V) Mustard oil
(VI) Coconut oil
Which of these can be used for prepartion of soap?
(a) I, II, III, VI
(b) II, V, VI
(c) II, III, V, VI
(d) II, III, VI
Explain the action of soap in removing an oily spot from a piece of cloth.
We are using ______ to remove strong stains on the clothes.
- Write the formula and draw electron dot structure of carbon tetrachloride.
- What is saponification? Write the reaction involved in this process.
