Question

1. Why does matchstick not burn on striking sometimes?
2. Why slippers with rubber sole becomes slippery when used for long time?
3. How do we know that food is spoiled?
4. Which types of crops are mainly involved in Nitrogen fixation?
5 What makes the bread fluffy and soft?
6 Virus are link between living and Non-living things. Why is it so?

Answer 1

1. matchstick not burn on striking sometimes because it sometime rubbed by less friction.
2. slippers with rubber sole become slippery when used for long time because due to continues contact with the floor.
3. we get to know that the food spoilt when it starts leaving odours and looks to be ripe.
4. two plants which are involved during the nitrogen fixation are belonging to legume plant family like soybeans, peanuts etc.
5. Water woux make the bread more fluffy and soft.
6. virus is a link between the living and non-living because they act to be living if they are inside a host to reproduce , meanwhile they act non living if they are outside the host...

hope my answer will help you