Q 31 :    

Read the passage given below and answer the following questions from (i) to (v):

Humans modify the environment around them through agriculture and urbanisation as the major activities. Human impact on the environment is so substantial that there is nothing left called pristine nature or ecosystems untouched by human intervention. The major impact of these interventions is ever increasing levels of all forms of pollution on our Earth. Waste disposal and depletion of ozone layer are two major concerns in this world.

 

(i) Which one of the following sentences is not true about ozone?

  • Ozone is deadly poisonous.

     

  • Ozone protects us from harmful UV rays emitted by the sun.

     

  • Ozone is formed from oxygen in presence of UV rays.

     

  • Ozone causes skin cancer in humans.

     

(2)

 



Q 32 :    

Read the passage given below and answer the following questions from (i) to (v):

Humans modify the environment around them through agriculture and urbanisation as the major activities. Human impact on the environment is so substantial that there is nothing left called pristine nature or ecosystems untouched by human intervention. The major impact of these interventions is ever increasing levels of all forms of pollution on our Earth. Waste disposal and depletion of ozone layer are two major concerns in this world.

 

(ii) Which one of the below given reasons holds good for increase in the amount of waste generated by humans?

  • Religious practices

     

  • Change in packaging style and products

     

  • Home cooking

     

  • Use of plant-based products

     

(2)

 



Q 33 :    

Read the passage given below and answer the following questions from (i) to (v):

Humans modify the environment around them through agriculture and urbanisation as the major activities. Human impact on the environment is so substantial that there is nothing left called pristine nature or ecosystems untouched by human intervention. The major impact of these interventions is ever increasing levels of all forms of pollution on our Earth. Waste disposal and depletion of ozone layer are two major concerns in this world.

 

(iii) An environment enthusiast would certainly not choose one of these for a tea party at her home.

  • Paper cups

     

  • Thermocol cup

     

  • Steel cup

     

  • Earthen cups

     

(2)

 



Q 34 :    

Read the passage given below and answer the following questions from (i) to (v):

Humans modify the environment around them through agriculture and urbanisation as the major activities. Human impact on the environment is so substantial that there is nothing left called pristine nature or ecosystems untouched by human intervention. The major impact of these interventions is ever increasing levels of all forms of pollution on our Earth. Waste disposal and depletion of ozone layer are two major concerns in this world.

 

(iv) Which of the following groups contains a non-biodegradable item?

  • Grass, flowers, lime-juice, and leather.

     

  • Grass, wood, leather, and plastic.

     

  • Cake, wood, flowers, and grass.

     

  • Fruit-peels, cake, leather, and lime-juice.

     

     

(2)

 



Q 35 :    

Read the passage given below and answer the following questions from (i) to (v):

Humans modify the environment around them through agriculture and urbanisation as the major activities. Human impact on the environment is so substantial that there is nothing left called pristine nature or ecosystems untouched by human intervention. The major impact of these interventions is ever increasing levels of all forms of pollution on our Earth. Waste disposal and depletion of ozone layer are two major concerns in this world.

 

(v) Which of the following waste management plans is likely to work the best?

  • Integrated waste management plan

     

  • Recycling waste management plan

     

  • Reducing waste management plan

     

  • Reusing waste management plan

     

(1)

 



Q 36 :    

Read the passage given below and answer the following questions from (i) to (v):

The waste generated by humans has been detrimental to our environment and is causing threat to our ecosystem. We are generating too much trash and failing to deal with it in a sustainable way. Every day we are disposing tons and tons of non-biodegradable and unrecyclable waste into our oceans and landfills. Plastic waste is an example.

In 2017, the Environmental Protection Agency in the US calculated that the total generation of municipal solid waste in the United States in 2017 was 267.8 million tons; compared with 2015 levels, it was a 5.7 million increase.

 

(i) Non-biodegradable substances are:

  • broken down by biological processes.

     

  • not broken down by biological processes.

     

  • prepared by biological processes.

     

  • cannot be broken down by physical processes.

     

(2)

 



Q 37 :    

Read the passage given below and answer the following questions from (i) to (v):

The waste generated by humans has been detrimental to our environment and is causing threat to our ecosystem. We are generating too much trash and failing to deal with it in a sustainable way. Every day we are disposing tons and tons of non-biodegradable and unrecyclable waste into our oceans and landfills. Plastic waste is an example.

In 2017, the Environmental Protection Agency in the US calculated that the total generation of municipal solid waste in the United States in 2017 was 267.8 million tons; compared with 2015 levels, it was a 5.7 million increase.

 

(ii) Which one of the following is not likely to happen in the case of solid waste disposal in landfills?

  • Unpleasant odours

     

  • Ground water pollution

     

  • Fires and explosions

     

  • Infrared radiation

     

(4)

 



Q 38 :    

Read the passage given below and answer the following questions from (i) to (v):

The waste generated by humans has been detrimental to our environment and is causing threat to our ecosystem. We are generating too much trash and failing to deal with it in a sustainable way. Every day we are disposing tons and tons of non-biodegradable and unrecyclable waste into our oceans and landfills. Plastic waste is an example.

In 2017, the Environmental Protection Agency in the US calculated that the total generation of municipal solid waste in the United States in 2017 was 267.8 million tons; compared with 2015 levels, it was a 5.7 million increase.

 

(iii) Humans are not supposed to get any energy by eating coal, because:

  • coal is harmful.

     

  • coal is burnt.

     

  • humans do not have enzymes to digest coal.

     

  • coal is black

     

(3)

 



Q 39 :    

Read the passage given below and answer the following questions from (i) to (v):

The waste generated by humans has been detrimental to our environment and is causing threat to our ecosystem. We are generating too much trash and failing to deal with it in a sustainable way. Every day we are disposing tons and tons of non-biodegradable and unrecyclable waste into our oceans and landfills. Plastic waste is an example.

In 2017, the Environmental Protection Agency in the US calculated that the total generation of municipal solid waste in the United States in 2017 was 267.8 million tons; compared with 2015 levels, it was a 5.7 million increase.

 

(iv) Man-made plastics are not bio-degradable because:

  • they are hard.

     

  • bacteria and saprophytes do not contain enzymes to decompose plastics.

     

  • plastics are made in industries.

     

  • plastics do not absorb water.

     

(2)

 



Q 40 :    

Read the passage given below and answer the following questions from (i) to (v):

The waste generated by humans has been detrimental to our environment and is causing threat to our ecosystem. We are generating too much trash and failing to deal with it in a sustainable way. Every day we are disposing tons and tons of non-biodegradable and unrecyclable waste into our oceans and landfills. Plastic waste is an example.

In 2017, the Environmental Protection Agency in the US calculated that the total generation of municipal solid waste in the United States in 2017 was 267.8 million tons; compared with 2015 levels, it was a 5.7 million increase.

 

(v) The depletion in the Ozone layer is caused by ________.

  • nitrous oxide

     

  • carbon dioxide

     

  • chlorofluorocarbons

     

  • methane

     

(3)