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Tamil Nadu Board of Secondary EducationHSC Science Class 12

Read the following passage carefully and answer the following questions. Pollution is the introduction of contaminants into the environment that

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Question

Read the following passage carefully and answer the following questions.

Pollution is the introduction of contaminants into the environment that cause harm to the ecosystem. The different kinds of pollution are air pollution, water pollution and land pollution. The release of various gases, finely divided solid particles, or liquid droplets that escape into the atmosphere to disperse and dilute in the environment is called air pollution. Modern society is also concerned about specific types of pollutants, such as noise pollution, light pollution, and plastic pollution.

Particulate Matter (PM), also known as particle pollution, is a complex mixture of extremely small particles and liquid droplets that get into the air. These particles if inhaled can affect health. The impact of PM 2.5 is particularly high in South Asia. Outdoor pollution is caused by a variety of pollutants like public and private vehicles, waste burning in the open, power production industries and construction and even cigarette smoking in public places.

Presently, air pollution is a major and growing risk factor for ill health in India. Delhi is one of the most air polluted cities in India. The air in the city as well as areas surrounding it has worsened to extremely hazardous levels in the recent years. This year’s pollution level is the worst in four years. Several studies have shown that poor air quality is a cause for many health issues among people with lower respiratory disorders with symptoms like dry cough, breathlessness, wheezing, chest discomfort, serious lung infections and cardio vascular diseases. Some studies throw light on the fact that about 16 per cent of the deaths worldwide in 2015 were due to pollution.

Air Masks are an option to protect oneself outdoor. Air masks can be used while commuting or while one is exposed to a polluted area. Some of these masks also include a layer of Activated carbon to filter the air. They protect us from suspended air particles and particulate matter up to the size of 2.5 microns and above. Their usage is limited to some days and should be disposed off after their prescribed duration of usage. The price for air masks starts from Rs 100 and can go up to Rs 500 and more.

We have to take active measures to control pollution and protect ourselves to lead a healthy and pollution free life.

  1. What is meant by pollution? Mention the different kinds of pollution.
  2. How does Particulate Matter cause air pollution?
  3. Identify three major causes of pollution in air
  4. Name the types of pollution we encounter now.
  5. What sort of health issues do people face due to air pollution?
  6. How can we protect ourselves outdoor from air pollution?
  7. Suggest a suitable title to the passage.
  8. Identify the meaning of the word similar to the one used in the fourth para:
  1. emerging
  2. filtering
  3. floating
  4. falling
Answer in Brief
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Solution

  1. Pollution is the introduction of contaminants into the environment that cause harm to the ecosystem. The different kinds of pollution are air pollution, water pollution, and land pollution.
  2. Particulate matter (PM), also known as particle pollution, is a complex mixture of extremely small particles and liquid droplets that get into the air. These particles if inhaled can affect health.
  3. The release of various gases, finely divided solid particles or liquid droplets that escape into the atmosphere to disperse and dilute in the environment are the major causes of air pollution.
  4. Noise pollution, light pollution, and plastic pollution.
  5. Several studies have shown that poor air quality is a cause for many health issues among people with lower respiratory disorders with symptoms like dry cough, breathlessness, wheezing, chest discomfort, serious lung infections, and cardiovascular diseases. Some studies throw light on the fact that about 16 percent of the deaths worldwide in 2015 were due to pollution.
  6. Air Masks are an option to protect oneself outdoor. Air masks can be used while commuting or while one is exposed to a polluted area.
  7. ‘Air pollution is a suitable title for the passage.
  8. the meaning of the word similar to the one used in the fourth para
  1. emerging
  2. filtering
  3. floating
  4. falling.
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Reading Skills
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Chapter 5.1: The Status of Tamil as a Classical Language - Reading [Page 153]

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Samacheer Kalvi English Class 12 TN Board
Chapter 5.1 The Status of Tamil as a Classical Language
Reading | Q a. | Page 153

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Answer any four of the following in 30 – 40 words each:
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(b) What hospitality did the peddler receive from the crofter?
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(d) What does Stephen Spender want to be done for the children of the school in a slum?
(e) What kind of life was enjoyed by crown prince Jung Bahadur till he reached the age of twenty?
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Read the extract and do the following activities :
B1 Likes and dislikes :
(i)
The child likes eating _______
(ii)
The child dislikes eating _______ 

They won’t eat peas, don’t like your bread -
For something in it crunches;
They gag on fat, the gravy’s gross,
They won’t eat grapes in bunches.
Tomatoes, onions, peppers, fish
Garlic nor cottage cheese;
Oh, it’s a dish uncommon rare
That truly seems to please.
No red sauce may the ice cream have,
“It’s bleeding,” they will say;
And gravely hand it to their mum
To take it to clean away
But let us speak of chocolate cake,
It must be frosted o’er;
They’ll devour three full slabs,
And calmly ask for more.
Oh, I do so always love to eat
With picky little pests,
Whose parents joy to make them
The most undesirable guests! 

B2 What message does the poem convey for children? 

B3 Pick out two pairs of rhyming words from the poem. 


Briefly explain the following statement from the text.

“You neither travelled to the past nor the future. You were in the present experiencing a different world.”


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Read the following statement and mark those that apply to you.

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(Change in School Hours, Cleanliness, Story-telling Competition, Lost and Found, Warning, Football Match)

1.

6 July 2015

        It has been observed by the Head Boy and Head Girl that certain classes do not clean up their classrooms before leaving. If any class is found untidy and littered after school, that class will be detained the next day after school hours up to 4 pm. Please take note of this.

2.

      Tomorrow, that is, on the 10th of July, the school will close an hour earlier, as the teachers have to attend an important P. T. A. meeting. So please inform your parents to arrange to pick you up at 2 pm instead of 3 pm.

3.

      On Sunday, 12th July 2015 there is a football match between classes VIII and IX, on the school ground. The match will begin at 9 am. All students are invited to come and cheer their favorite team. Please come on time, so that the players are not distracted.

4.

      The school has organized a Story-telling Competition for Classes V, VI, and VII from 21st to 25th of July. The competition will be held in the school hall at 10 in the morning. Children may select -

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     Three prizes will be given for each category.

      The time limit is 3-5 minutes. Those who wish to participate may contact Mrs. Sanjana Mohite for other details. They must register their names with her before the 16th of July.

5.

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Please stay away from that fence.

6.

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Use this passage to play the game. You can collect information on other famous personalities and play too.

Charlie Chaplin was born on April 16, 1889, in London England. His birth name was Charles Spencer Chaplin, though he had many nicknames growing up such as Charlie, Charlot, and The Little Tramp. His father, Charles Chaplin, and his mother, Hannah Chaplin, were inducted into the music hall of fame, leading the way to his exposure even as a young boy. His first onstage moment was when he was 5 years old; he sang a song that was intended to be sung by his own mother; she had become ill at the time of the performance, so little Charlie Chaplin stood instead and performed for his mother.

Charlie Chaplin came to the United States in 1910, at the age of 21. He was brought to New York, which was known to be a great place to start out for anyone trying to become a professional actor. Two years later, in 1913, Chaplin signed his very first contract at Keystone and it was no time before he headed to Hollywood. His first movie premiered in 1914, “Making a Living,” and went on to make over 35 movies total in that year alone. Charlie Chaplin grew to become one of the most popular and successful actors of all time. The moment that really kicked off his long career was in 1921 when he starred in, and produced, his first full-length film called “The Kid.” From then on, most people all over the world knew Charlie Chaplin and loved his movies. He had a great career and life, dying on December 25, 1977, in Vevey, Switzerland. He had apparently died of natural causes in his sleep from old age.


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For Want of a Nail
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For want of a shoe the horse was lost,
For want of a horse, the rider was lost,
For want of a rider, the battle was lost,
For want of a battle, the kingdom was lost,
And all for the want of a horseshoe nail!
[traditional rhyme]

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Say Aloud

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Read the passage given below and answer the questions that follow

Humans have long been fascinated by fiction. We experience excitement in assigning supernatural power to imaginary characters in fictional stories – and so we have Spider man, Batman, He–man, Titans and many more. The ‘Cyborg’ was an offshoot of such wild imagination of humans to invest our species with superhuman powers. Today, the Cyborg is no more an imaginary organism. We are living in a world where a sizeable population of humans have merged their bodies with technological implants. The term ‘Cyborg’, short for ‘cybernetic organism’, was coined to describe a man, whose body is implanted with technological devices to supplement and substitute body functions.

Cyborgs include people with cardiac pacemakers, contact lenses, bionic ears and eyes, prosthetics and so on. In other words, a cyborg is partly human and partly machine. The technological innovations in the field of medicine and healthcare augment humans with machines, producing a beta version of the human body. The advent of brain machine interfaces is certain to blur the boundary between humans and machines. Scientists are working hard to find a technique for age reversal too. People do not want to die, so mankind is striving to get to the final frontier, which is development of machines and devices that would accord man immortality.

The needs of humans are not limited. As time passes, food habits change, thinking patterns change, and even appearances change. We are about to travel by driverless, fully automated vehicles. Computers and smart phones have become our masters. The more we depend and merge with technological advancements, the more the humanness in us slowly erodes. Intelligence is sought to be infused into machines and robotics are designed in such a way to give man a virtual human companion. The field of artificial intelligence is overtaking the human brain and many fear that it could even harm the human race. Despite certain limitations and potential threats, many believe that cyborgs will be the next step in the evolution of mankind. The amalgamation of man and machine is sure to add a new dimension to the life of mankind and this will prove to be the ‘biggest evolution in Biology’ since the emergence of life, four billion years ago.

Questions:

a) Account for the popularity of characters with supernatural powers.

b) Who is referred to as a ‘Cyborg’?

c) What is expected to happen with the advent of the brain machine interface?

d) The needs of humans are not limited. How is this statement elaborated in the passage?

e) How can a machine turn into a virtual companion for humans?

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g) Identify the word in para 1 which means ‘everlasting life’.

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