Question

1 Name the acid in which gold is dipped.
2 What is red data book?
3 What is Bitumen?
4 Name the organism that helps in fixing atmospheric nitrogen in soil.
5 What is PET?
6 Who discovered the vaccine for Small pox?
7 Glve 2 examples of communicable diseases.​

Answer 1

Answer:

1.Aqua Regia

2.Red Data Book of the Russian Federation, also known as Red Book or Russian Red Data Book is a state document established for documenting rare and endangered species of animals, plants and fungi, as well ...

3.black viscous mixture of hydrocarbons obtained naturally or as a residue from petroleum distillation. It is used for road surfacing and roofing.

Answer 2

Answer:

1. hydrochloric acid and nitric acid

2.a book of endangered species

3.a black viscous mixture of hydro carbons obtained naturally

4.azotobactus and bacillus etc

5.polyethylene teraphthalate

6.edward Jenner

7. common cold and dengue