Tag: threats to water resource

Questions Related to threats to water resource

Adverse effects of acid rain include all of the following except:

  1. accelerated chemical weathering of building materials

  2. damage to forests and crops

  3. damage to aquatic organisms

  4. damage to septic systems


Correct Option: D
Explanation:

Acid rains: when the concentrations of oxides of nitrogen and sulphur increases in the air, rain water gets mixed up with these oxides to form acid rains.

Among the given options all are apt for the effects of acid rain except that it causes damage to the septic system.

It cannot cause damage to the septic system because most of the septic systems are underground and polluting such system with acids do not cause any adverse reaction to the environment.

Accelerated chemical weathering of building materials, damage to forests and crops, damage to aquatic organisms are the immediate effects of acid rains

The process of depletion of oxygen from water bodies occurring either naturally or due to human activity is known as ____________.

  1. Eutrophication

  2. Biomagnification

  3. Both a and b

  4. None of these


Correct Option: A

The responsible chemical for bio-magnification is ___________.

  1. DDT

  2. Ammonia

  3. Ozone

  4. Green house gases


Correct Option: A

Water pollution is responsible for __________.

  1. Diarrhea

  2. Abdominal discomfort

  3. Flu

  4. All of these


Correct Option: D
Explanation:

A virus is a simple submicroscopic parasite of plants, animals, and bacteria in well water that can cause disease. It consists essentially of a core of RNA or DNA surrounded by a protein coat. Viruses are not living organisms and are unable to replicate without a host cell. Some viral infections often associated with drinking or bathing in contaminated water include:

Gastroeneritus – Causes diarrhea, nausea, vomiting, fever, and abdominal pain.

Cryptosporidiosis – Causes flu-like symptoms, diarrhea, weight loss, bloating, and nausea.

Alteration in physical, chemical or biological characteristic of water, making it unsuitable for designated use in its natural state, is ________.

  1. Water pollution

  2. Soil pollution

  3. Air pollution

  4. None of these


Correct Option: A
Explanation:

Water pollution can be defined as alteration in physical, chemical or biological characteristics of water, making it unsuitable for designated best use in its natural state.  

World Health Organization (WHO) has defined water pollution as inclusion of any foreign material either from natural or other sources into a water body, thereby changing the natural qualities of water and making it unusable for its intended purpose.

The phenomenon of concentrated toxic deposition at the higher trophic level is known as _________.

  1. Biomagnification

  2. Bioaccumulation

  3. Eutrophication

  4. None of these


Correct Option: A

__________ in the water is essential for protection against dental caries and weakening of the bones, but higher levels can have an adverse effect on health.

  1. Chlorides

  2. Fluorides

  3. Cyanide

  4. Alkyl bromides


Correct Option: B

Groundwater is contaminated by ____________.

  1. Perfect Organic Pollutants

  2. Persistent Organic Pollutants

  3. Inorganic Organic Pollutants

  4. None of these


Correct Option: B

Which one of the following is not a disease spread through contaminated water?

  1. Malaria

  2. Cholera

  3. Jaundice

  4. Diarrhoea


Correct Option: A

Which industry does not spread water pollution?

  1. Chemical Industry

  2. Textile Industry

  3. Paper Industry

  4. Electronic Industry


Correct Option: D
Explanation:

Industrial pollution contaminates many sources of drinking water, releases unwanted toxins into the air and reduces the quality of soil all over the world. Major environmental disasters have been caused due to industrial mishaps, which have yet to be brought under control. From the given options, electronics industry does not spread water pollution.