Tag: economics

Questions Related to economics

Below given are few effects
A. Acidification of soil reduces fertility of soil
B. Destroys aquatic life and pollutes water resources
C. Causes irritation to eyes and skin of human beings and cattles
D. Causes erosion to buildings, bridges, statues etc
These all are the effects of 

economics environmental economics acid rain air pollution - effects and control air pollution and its effects

  1. Global warming

  2. Green house effect

  3. Eutrophication

  4. Acid rains

Show answer
Correct Option: D

Acid rain is caused by or recent reports of acid rain in some industrial cities are due to the effect of atmospheric pollution by

economics environmental economics acid rain air pollution - effects and control air pollution and its effects

  1. Excessive release of $CO _2$ by burning of fuels like wood and charcoal, cutting of forests and increased animal population

  2. Excessive release of $NO _2$ and $SO _2$ in the atmosphere by burning of fossil fuel

  3. Excessive release of $NH _3$ by industrial plants and coal gas

  4. Excessive release of CO in the atmosphere by incomplete combustion of coke, charcoal and other carbonaceous fuel in the of oxygen

Show answer
Correct Option: B
Explanation:

When $SO _2$ pollution in the air is much higher. Sometimes, $SO _2$ mixes in the air with small particles of metals near the factories and gets oxidised into sulphur trioxide $SO _3$. These gases are harmful and they react with water to form sulphuric acid ($H _2$$SO _4$) or sulphurous acid ($H _2$$SO _3$) and come down to earth with rainwater; it is called acid rain or acid precipitation.

Damage of Taj Mahal is being caused by

economics environmental economics acid rain air pollution - effects and control air pollution and its effects

  1. Acid rain

  2. Dust

  3. Global warming

  4. Smoke

Show answer
Correct Option: A
Explanation:
Taj Mahal is situated in Agra which has a number of industries. The pollutants from industries are released in the air which include oxides of sulphur and nitrogen. The oxides of sulphur and nitrogen react with water vapours in the atmosphere and form sulphuric acid and nitric acid which come down on earth in the form of rain and this is known as acid rain. 
The acid rain reacts with the marble of Taj Mahal which is made up of calcium carbonate and this has resulted in the change of colour of marble of Taj Mahal from white to pale yellow. Thus acid rain due to industrialization in Agra is damaging the Taj Mahal.
So, the correct answer is 'Acid rain'.

Acid rain is caused by.

economics environmental economics acid rain air pollution - effects and control air pollution and its effects

  1. Excess production of coal gas

  2. Excess release of $CO _2$ due to increasing combustion and respiration

  3. Excess release of $SO _2$ and $NO _2$ from burning fossil fuels

  4. Excess production of gaseous hydrocarbons

Show answer
Correct Option: C
Explanation:

Oxides of Sulphur and Nitrogen produced by the burning of fossil fuels react with water molecules in the atmosphere forming Sulphur based and Nitrogen based acids.

They precipitate and cause corrosion of buildings and plants.
So, the correct option is 'Excess release of  SO$ _2$ and NO$ _2$ from burning fossil fuels .'

Acid rain is due to.

economics environmental economics acid rain air pollution - effects and control air pollution and its effects

  1. Water pollution

  2. Air pollution

  3. Automobile pollution

  4. Pesticide pollution

Show answer
Correct Option: B
Explanation:

Air pollution resulting in high concentrations of sulphur dioxide and nitrogen dioxide leads to the production of acid by reaction with water vapour.

The formed acids of sulphur and nitrogen precipitate with rain forming acid rain.
So, the correct option is 'Acid Rain'.

The oxides of nitrogen and sulfur, when mixed with water in the air, are the chief components of acid rain.

economics environmental economics acid rain air pollution - effects and control air pollution and its effects

  1. True

  2. False

  3. Either

  4. Neither

Show answer
Correct Option: A
Explanation:
When the pH of rain is below 5.2, it is called acid rain. It occurs when oxides of nitrogen and sulfur react with water in the atmosphere and form nitric acid and sulfuric acid respectively. These acids then come down along with rain and make it acidic. The reactions of formation of nitric acid and sulfuric acid in the atmosphere are as follows:
SO2 + O2 ---> SO3
SO3 + H2O ---> H2SO4
NO + [O] ---> N2O5
N2O5 + H20 ---> HNO3
Hence, the statement given in the question is correct.
So, the correct answer is 'True'.

Primary data may be collected by __________________.

economics planning and collecting data different types of data primary and secondary data collecting data

  1. mailed questionnaire method

  2. scheduled sent through enumerators

  3. telephonic survey

  4. Any of the above

Show answer
Correct Option: D
Explanation:

Primary data is the data, which is collected for the first time by investigators. It is also known as raw data. It is the first-hand information. It refers to the collection of data for a specific purpose. It is original in nature. Primary data is more reliable, accurate and adequate than the secondary data. It may be collected by mailed questionnaire method, scheduled sent through enumerators and telephonic survey.

Primary data is more ________________.

economics planning and collecting data different types of data primary and secondary data collecting data

  1. reliable

  2. accurate

  3. adequate

  4. All of above

Show answer
Correct Option: D
Explanation:

Primary data is the data, which is collected for the first time by investigators. It s also known as raw data. It is the first-hand information. It refers to the collection of data for a specific purpose. It is original in nature. Primary data is more reliable, accurate and adequate than the secondary data.

Which method of data collections covers the widest area?

economics planning and collecting data different types of data primary and secondary data collecting data

  1. Telephone interview method

  2. Direct interview method

  3. Mailed questionnaire method

  4. All of above

Show answer
Correct Option: C
Explanation:

Under mailed questionnaire method, a well designed questionnaire is mailed to the informants with a request to fill it up and return the same within the specific time schedule. By this method, a wide range of people can be connected.

Under_________ method investigator instead of presenting himself before the informants contact them on telephone and collect the desired information.

economics planning and collecting data different types of data primary and secondary data collecting data

  1. telephonic survey

  2. direct personal interview

  3. indirect oral interview

  4. questionnaire sent through enumerators

Show answer
Correct Option: A
Explanation:

The quickest method to collect primary data is telephonic survey. A wide range of people can be connected through this method. People are asked questions through the use of telephone and data is collected according to their answers. Thus, under telephonic survey method, investigator instead of presenting himself before the informants contact them on telephone and collect the desired information.