Class 12th
Get insights from 11.9k questions on Class 12th, answered by students, alumni, and experts. You may also ask and answer any question you like about Class 12th
Follow Ask QuestionQuestions
Discussions
Active Users
Followers
New answer posted
10 months agoContributor-Level 10
This is a Short Answers Type Questions as classified in NCERT Exemplar
Ans: In Cottrell precipitator, charged smoke particles are passed through a chamber containing plates with charge opposite to the smoke particles. Smoke particles lose their charge on the plates and get precipitated.
New answer posted
10 months agoContributor-Level 10
This is a Short Answers Type Questions as classified in NCERT Exemplar
Ans: Animal hide is colloidal in nature and has positively charged particles. When it is soaked in tannin which has negatively charged colloidal particles, it results in mutual coagulation taking place.
New answer posted
10 months agoContributor-Level 10
This is a Short Answers Type Questions as classified in NCERT Exemplar
Ans: Medicines are more effective in the colloidal form because of large surface area and are easily assimilated in this form.
New answer posted
10 months agoContributor-Level 10
This is a Short Answers Type Questions as classified in NCERT Exemplar
Ans: The emulsifying agent forms an interfacial layer between suspended particles and the dispersion medium thereby stabilising the emulsion.
New answer posted
10 months agoContributor-Level 10
This is a Short Answers Type Questions as classified in NCERT Exemplar
Ans: Positively charged sol of hydrated ferric oxide is formed and on adding excess of NaCl, negatively charged chloride ions coagulate the positively charged sol of hydrated ferric oxide.
New answer posted
10 months agoContributor-Level 10
This is a Short Answers Type Questions as classified in NCERT Exemplar
Ans: Unbalanced bombardment of the particles of dispersed phase by molecules of dispersion medium causes brownian motion. This stabilises the sol.
New answer posted
10 months agoContributor-Level 10
This is a Short Answers Type Questions as classified in NCERT Exemplar
Ans: The charged colloidal particles start moving towards oppositely charged electrodes.
New answer posted
10 months agoContributor-Level 10
This is a Short Answers Type Questions as classified in NCERT Exemplar
Ans: The colloidal impurities present in water get coagulated by added alum, thus making water potable.
New answer posted
10 months agoContributor-Level 10
This is a Short Answers Type Questions as classified in NCERT Exemplar
Ans: It is a 4% solution of nitrocellulose in a mixture of alcohol and ether.
New answer posted
10 months agoContributor-Level 10
This is a Short Answers Type Questions as classified in NCERT Exemplar
Ans: Ice creams are emulsions which get stabilised by emulsifying agents like gelatin.
Taking an Exam? Selecting a College?
Get authentic answers from experts, students and alumni that you won't find anywhere else
Sign Up on ShikshaOn Shiksha, get access to
- 66k Colleges
- 1.2k Exams
- 688k Reviews
- 1850k Answers