What are gums made of? Is Fevicol different?

What are emulsion ? What are their different types ? Give example of each type.

Find the number of groups that can be made from 5 different green balls, 4 different blue balls and 3 different red balls, if at least 1 green and 1 blue ball is to be included.

What is the ratio of phase difference to the path difference of two light waves ?

On what bases are plants and animals put into different categories ?

What is the SI unit of potential difference ? Name the device used to measure the potential difference.

What is the SI unit of potential difference ? Name the device used to measure the potential difference.

What is meant by potential difference between two points ?

What is menstrual cycle? Describe the different phases in it.