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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
In a locality, hard water, required for an experiment, is not available. However, the following salts are available in the school laboratory:
1. Sodium sulphate
2. Calcium sulphate
3. Magnesium chloride
4. Sodium chloride
5. Calcium chloride
6. Potassium sulphate
Which of the above salts may be dissolved in water to obtain hard water for the experiment?
(A) 2, 3 and 5
(B) 1, 2 and 5
(C) 1, 2, 4 and 6
(D) 3 and 5 only
A student requires hard water for an experiment in his laboratory which is not available in the neighbouring area. In the laboratory there are some salts, which when dissolved in distilled water can convert it into hard water. Select from the following groups of salts, a group, each salt of which when dissolved in distilled water will make it hard.
(A) Sodium chloride, Potassium chloride
(B) Sodium sulphate, Potassium sulphate
(C) Sodium sulphate, Calcium sulphate
(D) Calcium sulphate, Calcium chloride
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(a) vegetable oil
(b) baking soda
(c) caustic soda
(d) common salt
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(a) rain
(b) tap
(c) hand pump
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______ molecules go and join with dirt and oil in the cloth.
The soap molecule has a
What are the similarities between Soap and synthetic detergent.
