Natural indicator is one of topics in chemistry lesson XI science. Students do experiment by themselves to know the material in daily life which can be used as natural indicator. There is no reason not to learn better in this time of pandemic

Please check this video :

https://drive.google.com/file/d/19c_668RqcfELXogP9b3PvfmsmVYHSNsS/view?usp=sharing

https://drive.google.com/file/d/16u03oBaPlo0gytb8bz2C6GkIIoJj41u9/view?usp=sharing