Question

give some important questions in science annual exam 9th class
​

Answer 1

Answer:

1. on which principle does a Stethoscope works?
2. what is the minimum distance to hear and echo?
3. How many types of plant issue?
4. Who is the father of diversity?
5. what are collides?
6. what is indo plasmic reticulam?
7. what is the scientific name of spyder and house fly

All question is important in exam