std 8 social science ch 5 swadhyay solution , dhoran 8 samajik vigyan swadhyay ch 5 , Std 8 new book

The sum of 5/8 and 8/5 is :

How many times of the acetic acid concentration, acetate salt should be added to a given acetic acid solution to obtain a solution of pH = 7.0 ( K_a for CH_3COOH=1.8xx10^(-5) ) .

There are 8 math's books and 6 science books in a almirah. In how many wayscan 4 books of each subject be selected?

Calculate the pH at the equivalence point when a solution of 0.1 M CH_3COOH is titrated with a solution of 0.1 M NaOH. K_a(CH_3COOH)= 1.8 xx 10^(-5)

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 how many ways can 8 books be divided between 2 students, if they get 3 and 5 books.

5 – ( – 8) is same as 5 + 8.