Ekam kasoti std8 social science paper solution October 2020||samajikvigayn||Ekam kasoti|| dhoran 8||

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

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

(a). What effect does the concentration of H^(+) (aq) ions have on the nature of a solution? (b). What effect does the concentration of OH^(-) ions have on the nature of a solution? (c). Someone put some universal indicator paper into vinegar. The pH is 3. What does this tell you about the vinegar? (d). Someone put some universal indicator paper onto wet soap. the pH is 8. What does this tell you about the soap? (e). State whether a solution is acidic, alkali or neutral if its pH is: (i) 9 (ii) 4 (iii) 7 (iv) 1 (v) 10 (vi) 3.