Question

Practice Questions

1. What are the effects of Air pollution and Acid rain?

2. What are the cause of air pollution and suggest how to prevent air

pollution?

3. List out the physical properties of Oxygen and Carbon dioxide?​

Answer 1

Explanation:

1. Air pollution like sulfur dioxide and nitrogen oxides can cause respiratory diseases, or can make these diseases worse. Respiratory diseases like asthma or chronic bronchitis make it hard for people to breathe. Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air.
2. Fumes from dry cleaned garments (many solvents used are carcinogenic). Allergens, such as mold, pollen, pet dander and dust mites. Wood-burning fireplaces or stoves. Improper ventilation in homes (can increase levels of radon and carbon monoxide gas).
3. They are the characteristics that determine how it will react with other substances or change from one substance to another. The better we know the nature of the substance the better we are able to understand it. Chemical properties are only observable during a chemical reaction. Reactions to substances may be brought about by changes brought about by burning, rusting, heating, exploding, tarnishing etc

Answer 2

Answer:

Effects of acid rain:

1. a. Increased amounts of fine particulate matter in the air contribute to heart and lung problems, including asthma and bronchitis.

b. acid rain can cause damage to fish and other aquatic animals.

c. As lakes and rivers become more acidic biodiversity is reduced. Acid rain has eliminated insect life.

d. Acidic water enters the plant and causes important plant minerals to dissolve and get carried away; which ultimately causes the plant to die of lack of minerals for nutrition.

e. Acid rain can damage buildings, historic monuments, and statues, especially those made of rocks, such as limestone and marble, that contain large amounts of calcium carbonate.

Effects of air pollution:

a. Long-term health effects from air pollution include heart disease, lung cancer, and respiratory diseases such as emphysema.

b. Air pollution can also cause long-term damage to people's nerves, brain, kidneys, liver, and other organs.

c. Some scientists suspect air pollutants cause birth defects.

2. Causes of air pollution:

a. Fumes from dry cleaned garments (many solvents used are carcinogenic).

b. Allergens, such as mold, pollen, pet dander and dust mites.

c. Wood-burning fireplaces or stoves.

d. Improper ventilation in homes (can increase levels of radon and carbon monoxide gas).

Ways to reduce pollution:

a. Reduce the number of trips you take in your car.

b. Reduce or eliminate fireplace and wood stove use.

c. Avoid burning leaves, trash, and other materials.

d. Avoid using gas-powered lawn and garden equipment.

3. physical properties of oxygen:

Color : Colorless.

Phase : Gas.

Odor : Oxygen is an odorless gas.

Taste : A tasteless gas.

Conductivity : A poor conductor of heat and electricity.

Solubility : Slightly soluble in water, alcohol and some other common liquids.

Density : It is denser than air

Physical properties of CO2:

Carbon dioxide is colorless.

At low concentrations the gas is odorless; however, at sufficiently-high concentrations, it has a sharp, acidic odor.

At standard temperature and pressure, the density of carbon dioxide is around 1.98 kg/m3, about 1.67 times that of air.