Std 8 social science Ekam kasoti paper solution December 2021

Class 10 Social Science| Democratic Politics Chapter 8 | Challenges of Democracy | Important Questions | Quick Revision

Class 10 Social Science| Democratic Politics Chapter 8 | Challenges to Democracy | Important Questions | Quick Revision Part 2

In the preparation of ultra filter paper collodion solution is used, collodion is 4% solution nitro cellulose in a mixture of alcohol and ether 4% solution cellulose acetate in phenol 8% solution cellulose acetate in alcohol formaldehyde in water