SublimationThis method is used when one of the components of a mixture vaporizes without melting. Hence, this method is used when some solids have a tendency to sublime on heating, i.e. they convert directly from solid state to gaseous state on heating without passing through liquid phase. Examples of solids that sublime are dry ice (solid carbon dioxide), iodine, ammonium chloride, arsenic, and naphthalene. So, on cooling, the vaporized component directly changes into solid. The mixture of Ammonium chloride is separated from common salt by this method. A mixture of ammonium chloride and common salt is taken in a dish. It is covered with an inverted glass funnel. The narrow opening of the funnel is plugged with cotton. On heating ammonium chloride sublimes and collects in the cotton. NOTE: The colour of vapours formed of sublimation of iodine is PURPLE. |
Sublimation occurs in _________________. | |||
Right Option : D | |||
View Explanation |
The technique in which a substance convert directly from solid state to gaseous state on heating without passing through liquid phase is called ___________________. | |||
Right Option : C | |||
View Explanation |
The colour of vapours formed of sublimation of iodine is __________________________. | |||
Right Option : C | |||
View Explanation |
It was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
My experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
It has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
My experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
I have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
About Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Abhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
My experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
One of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.