Colloids are a fascinating type of mixture where tiny particles of one substance are spread evenly throughout another substance. To understand colloids better, we look at two main parts: the dispersed phase and the dispersing medium.
The question specifically asks us to identify a colloid where the dispersing medium is a liquid. Let's analyze the common types of colloids and the options provided.
Here's a breakdown of different colloid types, including their dispersed phase, dispersing medium, and common examples:
| Colloid Type | Dispersed Phase | Dispersing Medium | Example |
|---|---|---|---|
| Mist (Type of Aerosol) | Liquid droplets | Gas | Fog, Clouds, Hair spray |
| Foam | Gas bubbles | Liquid | Whipped cream, Soap lather, Marshmallow |
| Jelly (Gel) | Liquid | Solid | Gelatin dessert, Jam, Cheese |
| Shaving Cream (A specific Foam) | Gas bubbles | Liquid (Water/Soap base) | Shaving cream foam |
Now let's apply this knowledge to the options given in the question:
Both 'Foam' and 'Shaving cream' have a liquid dispersing medium. However, 'Foam' represents the general category of colloids defined by having a gas dispersed in a liquid. 'Shaving cream' is a specific example that belongs to the 'Foam' category. In the context of classifying colloid types, 'Foam' is the fundamental classification that fits the description.
Which one of the following is used in soda-acid fire extinguishers?
After a hot sunny day, people sprinkle water on the roof-top because:
Methyl Isocyanate gas, which was involved in the disaster in Bhopal in December 1984, was used in the Union Carbide factory for the production of:
‘German silver’ is used to make decorative articles, coinage metal, ornaments, etc. The name is given because:
A patient's abdomen (alimentary canal) can be examined by X-ray after administering which one of the following metal salts in the patient's meal?
Which one among the following substances is a compound?
Which one of the following statements regarding acids is not correct?
Which among the following methods is used to separate the constituents present in compound?
Match List-I with List-II and select the correct answer using the code given below the Lists :
| List-I (Trade Name) | List-II (Chemical Name) |
| A. Bleaching powder | 1. Sodium bicarbonate |
| B. Baking soda | 2. Sodium carbonate, 10 water |
| C. Washing soda | 3. Calcium oxychloride |
| D. Plaster of Paris | 4. Calcium sulphate, \(\frac{1}{2}\) water |
Code:
A B C D
Which of the following is a greenhouse gas?
I. Methane
II. Nitrous oxide
Which of the following is NOT a Fossil Fuel?
Which one of the following is used in soda-acid fire extinguishers?
The separation of two immiscible liquids can be done based on the difference in their_______.
Orange juice contains ______ acid due to which it tastes sour.