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Multiple choice evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

A good source of energy would be the one which would do a _______ amount of work per unit volume of mass. Any source of energy we use to do work is consumed & _______ used again.

  1. larger, can be

  2. smaller, can be

  3. larger, cannot be

  4. smaller, cannot be
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A good source of energy would be the one which would do a larger amount of work per unit volume of mass. Any source of energy we use to do work is consumed & cannot be used again.
A good source of energy should have the following characteristics:
  1. It should do a large amount of work per unit mass or volume - it means that the output energy must be more than the input energy. It should have high calorific value.
  2. It should be easily accessible - the energy source should be able to provide energy over a long period of time. Example: coal and petroleum.
  3. Should be easy to store and transport - most common sources of energy such as coal, petrol and LPG need to be transported to users from their points of production. They also need proper storage. Thus it is important to store and transport these sources safely and economically.
  4. Safe and convenient to use - energy sources should be safe as it is used by a large number of people and should be convenient.
Multiple choice evs - i rules are for everyone need to conserve biodiversity protecting our environment biodiversity loss and need for conservation sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

American water plant that has become a troublesome water weed in India is

  1. Cyperus rotundus

  2. Eichhornia crassipes

  3. Typha latifolia

  4. Trapa bispinosa
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Eichhornia crassipes, commonly known as water hyacinth, is an aquatic plant native to the Amazon basin. It is often considered a highly problematic invasive species outside its native range. When not controlled, water hyacinth will cover lakes and ponds entirely; this dramatically impacts water flow, blocks sunlight from reaching native aquatic plants, and starves the water of oxygen, often killing fish and other aquatic animals. Hence option B is correct.

Multiple choice evs - i rules are for everyone need to conserve biodiversity protecting our environment biodiversity loss and need for conservation sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

'Central Public Health Engineering Research Institute' is situated at

  1. Jaipur

  2. Nagpur

  3. Bihar

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

'The National Environmental Engineering Research Institute' (NEERI), Nagpur was established in 1958 as 'Central Public Health Engineering', when environmental concerns were limited to human health. Shrimati Indira Gandhi, gave new name to the Institute as 'National Environmental Engineering Research Institute' in the year 1974.

Multiple choice evs - i rules are for everyone need to conserve biodiversity protecting our environment biodiversity loss and need for conservation sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

Which of the following is considered poor man's timber?

  1. Mango wood

  2. Bamboo

  3. Acacia wood

  4. Ecalyptus wood
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Bamboo is commonly called as the poor man's timber because it is used in all aspects of life. Bamboo is also an icon of versatility. It forms part of the paper we use every day and of the houses we build. By virtue of its unique properties like quick growth, tensile strength, availability and renewability, it has the epithet of 'poor man's timber'.

Multiple choice evs - i rules are for everyone need to conserve biodiversity protecting our environment biodiversity loss and need for conservation sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

The country which hosted the first World Earth Summit on conservation of environment is 

  1. India

  2. Brazil

  3. Peru

  4. Spain
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

From 3 - 14 June 1992, Rio de Janeiro in Brazil hosted the 'United Nations Conference on Environment and Development' (UNCED). The focus of this conference was the state of the global environment and the relationship between economics, science and the environment in a political context. The conference concluded with the 'Earth Summit', at which leaders of 105 nations gathered to demonstrate their commitment to sustainable development. 

Multiple choice evs - i rules are for everyone need to conserve biodiversity protecting our environment biodiversity loss and need for conservation sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

When is the 'World Wild Life Week' observed?

  1. First week of September

  2. Last week of September

  3. Third week of October

  4. Last week of October

  5. First week of October
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

In order to arouse a general awakening in the common man in favour of protection of wildlife, the 'Indian Board of Wild Life' (IBWL) decided to observe the 'Wildlife Week' and since then from October 2 - 8 every year organize different activities related to wildlife conservattion to commemorate this week. 

Every year around this time (October 2 to 8) governments, environmentalists, activists, educators organize different activities to accelerate the awareness of wildlife conservation among people. 
India, being a mega-storehouse of various species, is also able to manage several conferences, awareness programmes, and public meetings among the nature lovers. Schools and educational institutions organize events such as wildlife related movie screening, painting competition/essay writing/ debate competition for young children with wild life as the theme. 

Multiple choice evs - i rules are for everyone need to conserve biodiversity protecting our environment biodiversity loss and need for conservation sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

The best way to conserve our water resources is

  1. Rain water harvesting

  2. Sustainable water utilization

  3. Encouragement of natural regeneration of vegetation

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Human activities like deforestation, pollution, global warming etc is  a major threat to the natural resources.The scarcity of water is  a common problem nowadays which needs serious attempts.Rainwater harvesting is the method of conservation of rainwater by reusing the stored water for several domestic purposes. The rainwater is collected from various hard surfaces such as rooftops and or other man-made above ground hard surfaces.

Sustainable water utilization is the vision of the management of natural resources like water and its proper utilization.
Encouragement of natural regeneration of vegetation is also one of the methods to conserve water resource. It will usually encourage species, that are already plentiful in the area and will ensure the vegetation is directly suited to the site. As all of the above are ways to conserve our water resources. 
So, the correct answer is option D.

Multiple choice evs - i rules are for everyone need to conserve biodiversity protecting our environment biodiversity loss and need for conservation sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

Restoration of ecological equilibrium in mined areas can be achieved through

  1. Revegetation of the mined habitats

  2. Conversion of mined habitats into agricultural ecosystems

  3. Prevention of soil erosion

  4. Prevention of grazing
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A number of world's ecosystems have undergone significant degradation leading to a negative impact on the biodiversity and livelihood. One such ecosystem that has depleted over the years is the mined habitats. Since the mineral rich areas are also rich in forest resources. However continuous mining activities tend to change the ecological equilibrium. Restoration of the ecological equilibrium of the mined areas can be achieved by understanding the ecology, plant succession and soil types of the place and revegetation of the spoils .

Multiple choice evs - i rules are for everyone need to conserve biodiversity protecting our environment biodiversity loss and need for conservation sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

Asseration : Recently, the government of India instituted the 'Amrita Devi Bishnoi Wildlife Protection Award'.

Reason : We can speed up the reforestation by planting trees.

  1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

  2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

  3. Assertion is correct but Reason is incorrect.

  4. Both Assertion and Reason are incorrect.

  5. If the Assertion is false but Reason is true.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

'Amrita Devi Bishnoi Wild Life Protection Award' is given for significant contribution in the field of wildlife protection, which is recognised as having having done exemplary work for the protection of wildlife. A cash award of rupees one lakh is presented to individuals / institutions involved in wildlife protection.

Reforestation means replanting of forest trees in areas, which were once having dense forests but the forests were later on destroyed by cutting of trees in large numbers. 
Thus, the correct answer is option B.