Question

answer these true or false​

Answer 1

1. false
2. True
3. True
4. True
5. True
6. false

hope so it helps you ...

Answer 2

i. False.  

Exp. The process of the evolution of fossil fuels from dead and decaying matter is a process that takes millions of years. It cannot be done artificially in labs with the help of heat and pressure in a nick of time.

ii. True

Exp. The process by which coal forms is known as carbonization. It takes millions of years and thus it is a slow and long process.

iii. False

Exp. Bituminous coal contains more carbon content than lignite.  

Bituminous --- 76 to 86 %

Lignite --- 65 to 70 %

iv. False

Exp. Producer gas is obtained when coal is burned under air deficiency. There is no need of petroleum in the production of producer gas.

v. False

Exp. Human body cells contain 23 pairs of chromosomes in which 22 pairs are homologous while one pair is a set of sex chromosomes.

vi. False

Exp. Testes produce the male gametes known as sperm. The female gametes are produced in the ovary in the form of ovum.