UPSC Exam > UPSC Questions > Which among the following is correct?a) A col...
Start Learning for Free
Which among the following is correct?
- a)A colloid is a homogeneous mixture.
- b)Colloids are not big enough to scatter a beam of light passing through it.
- c)Colloids can be separated from the mixture by the process of filtration.
- d)A special technique of separation known as centrifugation can be used to separate the colloidal particles.
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Which among the following is correct?a) A colloid is a homogeneous mix...
Ans: d
Explanation:
- A colloid is a heterogeneous mixture.
- The size of particles of a colloid is too small to be individually seen by naked eyes.
- Colloids are big enough to scatter a beam of light passing through it and make its path visible.
- They do not settle down when left undisturbed, that is, a colloid is quite stable.
- They cannot be separated from the mixture by the process of filtration. But, a special technique of separation known as centrifugation can be used to separate the colloidal particles.
Most Upvoted Answer
Which among the following is correct?a) A colloid is a homogeneous mix...
Colloids are heterogeneous mixtures containing dispersed particles that are larger than individual molecules but smaller than visible particles. They consist of two or more phases: a dispersed phase and a continuous phase. The dispersed phase consists of tiny particles, called colloidal particles, which are evenly dispersed throughout the continuous phase.
Explanation:
1. Option A: A colloid is a homogeneous mixture.
This statement is incorrect. Colloids are actually heterogeneous mixtures, as they contain two or more phases that are distinguishable. The particles in a colloid are not evenly distributed throughout the mixture.
2. Option B: Colloids are not big enough to scatter a beam of light passing through it.
This statement is incorrect. Colloids are capable of scattering a beam of light passing through them. This phenomenon is known as the Tyndall effect. When a beam of light passes through a colloid, it gets scattered by the colloidal particles, making the path of the light visible.
3. Option C: Colloids can be separated from the mixture by the process of filtration.
This statement is incorrect. Filtration is a process used to separate solid particles from a liquid or gas by passing it through a filter medium. However, colloidal particles are too small to be effectively separated by filtration. They are not retained by a filter because their size is smaller than the pores of the filter medium.
4. Option D: A special technique of separation known as centrifugation can be used to separate the colloidal particles.
This statement is correct. Centrifugation is a technique used to separate particles based on their size and density. In the case of colloids, centrifugation can be used to separate the colloidal particles from the mixture. When a colloid is subjected to centrifugation, the heavier colloidal particles settle down at the bottom of the centrifuge tube, forming a sediment. The clear liquid above the sediment is known as the supernatant. This separation technique is effective due to the difference in density between the colloidal particles and the continuous phase.
In conclusion, option D is the correct answer. Centrifugation is a special technique that can be used to separate colloidal particles from a mixture.
Explanation:
1. Option A: A colloid is a homogeneous mixture.
This statement is incorrect. Colloids are actually heterogeneous mixtures, as they contain two or more phases that are distinguishable. The particles in a colloid are not evenly distributed throughout the mixture.
2. Option B: Colloids are not big enough to scatter a beam of light passing through it.
This statement is incorrect. Colloids are capable of scattering a beam of light passing through them. This phenomenon is known as the Tyndall effect. When a beam of light passes through a colloid, it gets scattered by the colloidal particles, making the path of the light visible.
3. Option C: Colloids can be separated from the mixture by the process of filtration.
This statement is incorrect. Filtration is a process used to separate solid particles from a liquid or gas by passing it through a filter medium. However, colloidal particles are too small to be effectively separated by filtration. They are not retained by a filter because their size is smaller than the pores of the filter medium.
4. Option D: A special technique of separation known as centrifugation can be used to separate the colloidal particles.
This statement is correct. Centrifugation is a technique used to separate particles based on their size and density. In the case of colloids, centrifugation can be used to separate the colloidal particles from the mixture. When a colloid is subjected to centrifugation, the heavier colloidal particles settle down at the bottom of the centrifuge tube, forming a sediment. The clear liquid above the sediment is known as the supernatant. This separation technique is effective due to the difference in density between the colloidal particles and the continuous phase.
In conclusion, option D is the correct answer. Centrifugation is a special technique that can be used to separate colloidal particles from a mixture.
|
Explore Courses for UPSC exam
|
|
Similar UPSC Doubts
Top Courses for UPSCView all
Which among the following is correct?a) A colloid is a homogeneous mixture.b) Colloids are not big enough to scatter a beam of light passing through it.c) Colloids can be separated from the mixture by the process of filtration.d) A special technique of separation known as centrifugation can be used to separate the colloidal particles.Correct answer is option 'D'. Can you explain this answer?
Question Description
Which among the following is correct?a) A colloid is a homogeneous mixture.b) Colloids are not big enough to scatter a beam of light passing through it.c) Colloids can be separated from the mixture by the process of filtration.d) A special technique of separation known as centrifugation can be used to separate the colloidal particles.Correct answer is option 'D'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which among the following is correct?a) A colloid is a homogeneous mixture.b) Colloids are not big enough to scatter a beam of light passing through it.c) Colloids can be separated from the mixture by the process of filtration.d) A special technique of separation known as centrifugation can be used to separate the colloidal particles.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which among the following is correct?a) A colloid is a homogeneous mixture.b) Colloids are not big enough to scatter a beam of light passing through it.c) Colloids can be separated from the mixture by the process of filtration.d) A special technique of separation known as centrifugation can be used to separate the colloidal particles.Correct answer is option 'D'. Can you explain this answer?.
Which among the following is correct?a) A colloid is a homogeneous mixture.b) Colloids are not big enough to scatter a beam of light passing through it.c) Colloids can be separated from the mixture by the process of filtration.d) A special technique of separation known as centrifugation can be used to separate the colloidal particles.Correct answer is option 'D'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which among the following is correct?a) A colloid is a homogeneous mixture.b) Colloids are not big enough to scatter a beam of light passing through it.c) Colloids can be separated from the mixture by the process of filtration.d) A special technique of separation known as centrifugation can be used to separate the colloidal particles.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which among the following is correct?a) A colloid is a homogeneous mixture.b) Colloids are not big enough to scatter a beam of light passing through it.c) Colloids can be separated from the mixture by the process of filtration.d) A special technique of separation known as centrifugation can be used to separate the colloidal particles.Correct answer is option 'D'. Can you explain this answer?.
Solutions for Which among the following is correct?a) A colloid is a homogeneous mixture.b) Colloids are not big enough to scatter a beam of light passing through it.c) Colloids can be separated from the mixture by the process of filtration.d) A special technique of separation known as centrifugation can be used to separate the colloidal particles.Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for UPSC.
Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free.
Here you can find the meaning of Which among the following is correct?a) A colloid is a homogeneous mixture.b) Colloids are not big enough to scatter a beam of light passing through it.c) Colloids can be separated from the mixture by the process of filtration.d) A special technique of separation known as centrifugation can be used to separate the colloidal particles.Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Which among the following is correct?a) A colloid is a homogeneous mixture.b) Colloids are not big enough to scatter a beam of light passing through it.c) Colloids can be separated from the mixture by the process of filtration.d) A special technique of separation known as centrifugation can be used to separate the colloidal particles.Correct answer is option 'D'. Can you explain this answer?, a detailed solution for Which among the following is correct?a) A colloid is a homogeneous mixture.b) Colloids are not big enough to scatter a beam of light passing through it.c) Colloids can be separated from the mixture by the process of filtration.d) A special technique of separation known as centrifugation can be used to separate the colloidal particles.Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of Which among the following is correct?a) A colloid is a homogeneous mixture.b) Colloids are not big enough to scatter a beam of light passing through it.c) Colloids can be separated from the mixture by the process of filtration.d) A special technique of separation known as centrifugation can be used to separate the colloidal particles.Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which among the following is correct?a) A colloid is a homogeneous mixture.b) Colloids are not big enough to scatter a beam of light passing through it.c) Colloids can be separated from the mixture by the process of filtration.d) A special technique of separation known as centrifugation can be used to separate the colloidal particles.Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice UPSC tests.
|
|
Explore Courses for UPSC exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup