Tag: protecting our environment

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Multiple choice commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

What is the ratio of CH$ _4$ in a biogas?

  1. 1:2

  2. 1:3

  3. 2:1

  4. 3:1
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

CH$ _4$ is methane, which is the major component of biogas. Ratio is 3:1. 

75% of biogas is methane which is an inflammable fuel. Biogas is characterized based on its chemical composition and the physical characteristics which result from it. It is primarily a mixture of methane (CH$ _4$) and inert carbonic gas (CO$ _2$). However the name “biogas” gathers a large variety of gases resulting from specific treatment processes, starting from various organic waste - industries, animal or domestic origin waste, etc 
Thus, the correct answer is option D.

Multiple choice evs - i rules are for everyone unequal distribution of resources protecting our environment meaning and type of resources sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

Both power and manure are provided by

  1. Petrocrops

  2. Nuclear plants

  3. Biogas

  4. Energy crops
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Biogas typically refers to a mixture of different gases produced by the breakdown of organic matter in the absence of oxygen. Biogas can be produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste or food waste. It is a renewable energy source.
Biogas can be produced by anaerobic digestion with anaerobic bacteria, which digest material inside a closed system, or fermentation of biodegradable materials.

Multiple choice commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

Biogas contains

  1. Traces of CH$ _4$
  2. 30-40% of CH$ _4$
  3. 50-70% of CH$ _4$
  4. 80% of C$ _2$H$ _6$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Biogas is a mixture of methane and carbon dioxide produced by bacterial degradation of organic matter and used as a fuel.
Biogas is comprised primarily of methane and carbon dioxide. 
It contains methane (50-70%), carbon dioxide (30-50%), and very small amounts of hydrogen and hydrogen sulphide. 
Biogas typically refers to a (biofuel) gas produced by the anaerobic digestion or fermentation of organic matter including manure, sewage sludge, municipal solid waste, biodegradable waste or any other biodegradable feedstock, under anaerobic conditions. 
Thus, the correct answer is option C.
Multiple choice commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

Advantage of energy plantations is

  1. Running nuclear plants

  2. To reduce pressure on fossil fuel

  3. To decrease soil erosion and pollution

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Energy plantation is the method in which there is the cultivation of certain species of the plants which can be used as the source of energy. They can be used as an alternative to the fossil fuels. This reduces the pressure on the fossil fuels. 

Due to the plantation, there is the decrease in the problems like soil erosion. The pollution caused due to the decrease in the number of trees is also reduced.
Thus, the correct answer is option D. 

Multiple choice evs - i rules are for everyone unequal distribution of resources protecting our environment meaning and type of resources sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

Which one produce gas by decomposing the gobar in gobar gas?

  1. Fungi

  2. Virus

  3. Methanogenic bacteria

  4. Algae
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Anaerobic digestion is a natural process in which bacteria convert organic materials into biogas. It occurs in marshes and wetlands and in the digestive tract of ruminants. The bacteria are also active in landfills, where they are the principal process degrading landfilled food wastes and other 
biomass. Biogas can be collected and used as a potential energy resource. The process occurs in an anaerobic (oxygen-free) environment through the activities of acid- and methane-forming (methanogenic) bacteria that break down the organic material and produce methane and carbon dioxide in a gaseous form, known as biogas. 

Multiple choice commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

Asia's largest wind farm using wind waves for generating power is at

  1. Kyota (Japan)

  2. Lamba (Gujrat)

  3. Kazakistan

  4. Pokhran (India)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Wind is an inexhaustible source of energy. Asia's largest windmill or wind farm complex is established at Lamba village in the Jamnagar district of Gujrat. It had successfully generated 1500+ kWh in its pilot stage of 3 months. Thus the correct answer is option B.

Multiple choice commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

Solar cell can be used for sufficient amount of

  1. Storing water

  2. Storing light

  3. Storing sun rays as energy source

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The device which can trap the solar energy and convert the solar energy into an electrical form of energy is called as the solar cell. Solar cells are generally used for the storage of the radiations from the sun in the form of energy resource. These cells are used in the solar panels for the generation of electricity for the street lights. 

Thus, the correct answer is option C. 

Multiple choice commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

Thermal pollution in water bodies is caused due to discharge of

  1. Waste from agricultural fields

  2. Hot water from power plants

  3. Hot chemicals from industries

  4. Waste from mines
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Thermal pollution is caused by change in water temperature which leads to degradation of water quality. It is caused due to use of water as a coolant by power plants and industrial manufacturers. When such water is returned to the natural environment at a higher temperature, it decreases oxygen supply and affects ecosystem composition.

So, the correct answer is option B.

Multiple choice commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

The land of wind mills using wind waves as a source of power is

  1. Netherland

  2. India

  3. Japan

  4. Hong Kong
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Netherland is referred as the land of the windmills. There are many windmills installed in the regions called as wind farms. There are large turbines which are used for the conversion of the wind energy to produce electricity. About 3400 MW energy was produced in this region with the help of windmills.

Thus, the correct answer is option A.