NEET Exam  >  NEET Tests  >  Chemistry Class 12  >  Test: Emulsions (Old NCERT) - NEET MCQ

Test: Emulsions (Old NCERT) - NEET MCQ


Test Description

5 Questions MCQ Test Chemistry Class 12 - Test: Emulsions (Old NCERT)

Test: Emulsions (Old NCERT) for NEET 2024 is part of Chemistry Class 12 preparation. The Test: Emulsions (Old NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: Emulsions (Old NCERT) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Emulsions (Old NCERT) below.
Solutions of Test: Emulsions (Old NCERT) questions in English are available as part of our Chemistry Class 12 for NEET & Test: Emulsions (Old NCERT) solutions in Hindi for Chemistry Class 12 course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Test: Emulsions (Old NCERT) | 5 questions in 10 minutes | Mock test for NEET preparation | Free important questions MCQ to study Chemistry Class 12 for NEET Exam | Download free PDF with solutions
Test: Emulsions (Old NCERT) - Question 1

 Which of the following is not a correct match?

Detailed Solution for Test: Emulsions (Old NCERT) - Question 1

Butter is an example of water in oil type emulision.

Test: Emulsions (Old NCERT) - Question 2

Which of the following is not an example of an emulsifying agent?

Detailed Solution for Test: Emulsions (Old NCERT) - Question 2

Emulsifying Agents:
An emulsifying agent is a substance that helps to stabilize and disperse two immiscible substances, such as oil and water, into a stable and homogeneous emulsion. Emulsifying agents can be classified into various categories, including proteins, gums, soaps, and electrolytes.
Options:
Let's analyze each option to identify the one that is not an example of an emulsifying agent:
A. Proteins: Proteins are commonly used as emulsifying agents in food and cosmetic products. They have the ability to form stable emulsions by reducing the surface tension between oil and water. Therefore, proteins can be considered as emulsifying agents.
B. Gums: Gums, such as xanthan gum and guar gum, are frequently used as emulsifying agents in food products. These gums have a high viscosity and can stabilize oil-in-water emulsions by forming a protective layer around the dispersed oil droplets.
C. Soaps: Soaps are surfactants that can act as emulsifying agents. They have a hydrophilic (water-loving) head and a hydrophobic (oil-loving) tail, allowing them to interact with both oil and water. Soaps can form micelles, which help to disperse and stabilize oil droplets in water.
D. Electrolytes: Electrolytes, such as salts, are not commonly used as emulsifying agents. They do not possess the necessary properties to stabilize and disperse immiscible substances. Therefore, electrolytes are not an example of an emulsifying agent.
Conclusion:
From the given options, the correct answer is D: Electrolytes. Electrolytes are not considered as emulsifying agents because they do not possess the necessary properties to stabilize and disperse immiscible substances.
1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: Emulsions (Old NCERT) - Question 3

The separation of an emulsion into its constituent liquids is known as

Detailed Solution for Test: Emulsions (Old NCERT) - Question 3

The separation of an emulsion into its constituents is called demulsification. Various methods of demulsification are freezing, boiling, centrifugation or chemical methods.

Test: Emulsions (Old NCERT) - Question 4

Which of the following statements given about emulsions is incorrect?

Detailed Solution for Test: Emulsions (Old NCERT) - Question 4

Emulsions can be diluted with any amount of the dispersion medium. On the other hand, the dispersed liquid when mixed, forms a separate layer.

Test: Emulsions (Old NCERT) - Question 5

Match the column I with column II with respect to applications of properties of colloids in different fields and mark the approptiate choice.

135 videos|347 docs|182 tests
Information about Test: Emulsions (Old NCERT) Page
In this test you can find the Exam questions for Test: Emulsions (Old NCERT) solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Emulsions (Old NCERT), EduRev gives you an ample number of Online tests for practice

Up next

135 videos|347 docs|182 tests
Download as PDF

Up next