Question

152
Write T for True or F for False.
1. The major component of air is oxygen.
2. The first layer of atmosphere is troposphere.
3. Sedimentation is used to remove insoluble substances from water.
4. Water must be boiled to make it fit for drinking.
5. We get chlorinated water by distillation.​

Answer 1

Answer:

Answer are

False

True

False

True

True

Answer 2

Answer:

1. False. The major component of air is Nitrogen.

2. True. The troposphere (between 0 and about 15 kilometers) is the first layer above the Earth's surface.

3. True. Sedimantation is used for the separation of insoluble substances which are heavier than liquid.

4. True. Boiling is the surest method to kill disease-causing organisms.

5. False. Distillation can remove many organic compounds, heavy metals (such as lead), chlorine, chloramines, and radionucleides.