Welcome to the NCERT Solutions for Class 12 Chemistry - Chapter Surface Chemistry. This page offers a step-by-step solution to the specific question from Exercise 2, Question 27: . With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.
Comment on the statement that "colloid is not a substance but a state of substance".
Common salt (a typical crystalloid in an aqueous medium) behaves as a colloid in a benzene medium. Hence, we can say that a colloidal substance does not represent a separate class of substances. When the size of the solute particle lies between 10 nm and 100 nm, it behaves as a colloid.
Hence, we can say that colloid is not a substance but a state of the substance which is dependent on the size of the particle. A colloidal state is intermediate between a true solution and a suspension.
The reaction between A and B is first order with respect to A and zero order with respect to B. Fill in the blanks in the following table:
| Experiment |
A/ mol L - 1 |
B/ mol L - 1 |
Initial rate/mol L - 1 min - 1 |
| I | 0.1 | 0.1 |
2.0 × 10 - 2 |
| II | -- | 0.2 |
4.0 × 10 - 2 |
| III | 0.4 | 0.4 | -- |
| IV | -- | 0.2 |
2.0 × 10 - 2 |
NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:
Stay updated with our latest educational content and study tips
One of the challenging things students face nowadays is procrastination. It hinders productivity, making it difficult for students to score well. We often associate procrastination as just being lazy. But there’s more to it. Various studies have shown that procrastination stems from negative feelings such as stress and anxiety. Oftentimes, when we start, we think […]
Read MoreThe CBSE Board Exam is a crucial milestone for millions of students across India. The Central Board of Secondary Education is famous for its imparting quality education and knowledge which reaches out to a large share of students. Also, it is important to know that, the CBSE board takes a slight unconventional route, since it […]
Read MoreHaryana government issued a notification on 31st December 2024 through its Gazette notification No. 42/119/2019-5HR-II for CET Haryana 2024. The Common Eligibility Test (CET) for Haryana is a significant opportunity for candidates seeking government jobs in Group C and Group D posts. Below is a comprehensive summary of the key information you need to know […]
Read MoreSacrificing your sleep to study more is doing more damage than you think. While it may seem like utilizing every hour of the day for study leads to better outcomes, the reality is quite the opposite. Lack of proper rest can negatively impact your brain, especially when it comes to sleep and memory retention. You’ll […]
Read MoreWelcome to the NCERT Solutions for Class 12 Chemistry - Chapter . This page offers a step-by-step solution to the specific question from Excercise 2 , Question 27: Comment on the statement that "colloid is not a substance but a state of substance".....
Comments
Awsome answers
Thank you
thanks saralstudy your answer quality excellent
thanks saralstudy your answer quality excellent
Thanks saral study.
Thanks a lot saralstudy your answer quality is good