The Chapter “Tobacco the Silent Killer” is taken from Tulip Series English Book 7 for students of JKBOSE. This post is about Tobacco the Silent Killer Class 7 Question Answer and Explanation. You have already read the Summary of Chapter Tobacco the Silent Killer in the previous post. In this post, you will find Tobacco the Silent Killer Class 7 Solutions, Grammar Work, Chapter Explanation etc. Let’s get started:
Tobacco the Silent Killer Class 7 Question Answer
The chapter “Tobacco the Silent Killer” is about tobacco plant and their characteristics, constituents of tobacco and tobacco smoke. They are carcinogenic chemicals. It is aware people of the harmful effects of tobacco.
Tobacco the Silent Killer Question Answers
Working with the Text
1. What is the major component of tobacco smoke.
Ans. The major component of tobacco smoke is nicotine. It is harmful to our nervous system.
2. What are the carcinogenic chemicals?
Ans. The chemicals which cause cancer are called carcinogenic chemicals. These are polycyclic hydrocarbons. Example. Acetaldehyde, arsenic, asbestos, formaldehyde etc.
3. List some uses of tobacco?
Ans. Some important uses of tobacco are:
a. Nicotine present in tobacco is used as an insecticide in agriculture and preparation of many vitamins also.
b. The oil obtained from refined tobacco seeds can be used in cooking and illumination.
c. It is used in oil paints and varnish industries.
d. Tobacco was used as a sedative in the past.
e. It was also used to cure gastrointestinal problems.
4. What is the difference between an active smoker and a passive smoker?
Ans. An active smoker is a person who smokes and exhales the tobacco smoke to the surroundings while a passive smoker is a person who is around r near the active smoker. The passive smoker does not smoke himself but inhales the smoke being close to the active smoker. Both active, as well as passive smokers, have the risk of developing several health problems.
5. List five harmful effects of smoking?
Ans. The five harmful effects of smoking are:
a. Tobacco smoke causes cancer.
b. It increases heartbeat and blood pressure.
c. Tobacco smoke can lead to heart attack and stroke.
d. It is also responsible for other diseases like bronchitis.
e. Tobacco smoke can damage the muscles and the brain.
f. It causes pregnancy-related problems.
1. Fill in the blank:
Carcinogenic, Columbus, Carbon monoxide, Lungs, Oxygen
- _____________ landed in Tobago and found people using tobacco leaves.
- Smoke contains _____________ chemicals.
- _____________ is a component of smoke.
- Smoking decreases the _____________ supply to the tissues and organs.
- Smoking mainly affects the _____________.
- Columbus landed in Tobago and found people using tobacco leaves.
- Smoke contains carcinogenic chemicals.
- Carbon monoxide is a component of smoke.
- Smoking decreases the oxygen supply to the tissues and organs.
- Smoking mainly affects the lungs.
2. Make meaningful words from the jumbled letters. These words appear in the lesson.
Read these sentences:
- He has been playing since morning.
- They have been working for five hours.
In the above sentences, the underlined words are in Present Perfect Continuous Tense. In the tense, we use ‘has/have + been +-ing! (Present Participle) form of the verb.
We use ‘has’ with s/he, it and third-person singular subjects’, we use ‘have’ with I, we, you, they and plural subjects’:
We use the Present Perfect Continuous Tense for actions that began in the past and are still going on or taking place now, and also showing time. .: Note: 1… ‘Since’is used with a point of time like 5 a.m., Monday, 1995, Eid, Diwali, etc. 2. “For’ is used with a period of time like 30 seconds, 10 minutes, 4 hours, 1 year, 2 decades. 5 centuries, etc.
Now use the verbs, given in the brackets incorrect form (Present Continuous or Present Perfect Continuous Tense) in the following sentences.
- The child _____________ since sunset. (Cry)
- I _____________ due to pain. (Cry)
- I _____________ for five hours (Sleep)
- She _____________ so you cannot talk to her. (Sleep)
- Come quickly. I _____________ for you. (Wait)
- She _____________ for him throughout the day. (Wait)
- We _____________ here for generations. (Live)
- We _____________ at our maternal home all this time. (Live)
- He _____________ to somebody on the phone. (Talk)
- He _____________ to his son for two hours. (Talk)
- They _____________ in my office for a month. (Work)
- The workers _____________ in the factory for twenty years. (Work)
- She _____________ the lawn since morning. (Mow)
- She _____________ her lawn. (Mow)
- It _____________. (Drizzle)
- It _____________ since sunrise. (Drizzle)
- The children _____________ from this disease since birth. (Suffer)
- They _____________ unnecessarily because of you. (Suffer)
- We _____________ our best. (Try)
- She _____________ hard to pass the examination. (Try)
- The child has been crying since sunset. (Cry)
- I am crying due to pain. (Cry)
- I have been sleeping for five hours (Sleep)
- She is sleeping so you cannot talk to her. (Sleep)
- Come quickly. I am waiting for you. (Wait)
- She has been waiting for him throughout the day. (Wait)
- We have been living here for generations. (Live)
- We are living at our maternal home all this time. (Live)
- He is talking to somebody on the phone. (Talk)
- He has been talking to his son for two hours. (Talk)
- They are working in my office for a month. (Work)
- The workers have been working in the factory for twenty years. (Work)
- She has been mowing the lawn since morning. (Mow)
- She is mowing her lawn. (Mow)
- It is drizzling. (Drizzle)
- It has been drizzling since sunrise. (Drizzle)
- The children have been suffering from this disease since birth. (Suffer)
- They are suffering unnecessarily because of you. (Suffer)
- We are trying our best. (Try)
- She has been trying hard to pass the examination. (Try)
Is there anybody in your family who smokes? Write a brief letter convincing him/her to quit smoking.
Ans. Yes, my uncle smokes in my family.
2nd March 2021
My dear uncle,
I am very sad to hear that you are a smoking addict. Smoking is very injurious to health. It not only shatters the health but also the family of a smoker. The smoke of cigarettes contains nicotine, tar and other harmful substances. It is responsible for mouth and lung cancer. It also affects digestion, memory and judgment. It results in a lack of concentration.
Also, you know that Shazia, your daughter feels depressed nowadays due to your habit of smoking. You love her very much, so I request you to please stop smoking for her sake.
Pay my regards to Aunt and love to Shazia.
Your loving nephew Sohail
Tobacco the Silent Killer Class 7 Line by Line Explanation
Tobacco is a common name applied to plants of the nightshade family that are cultivated for their leaves. The tobacco plant is one of the most important commercial non-food crops grown in the world today. Tobacco plants grow 1 to 3 m (3 to 10 ft) and produce between 10 and 20 broad leaves. These leaves are dried, processed, and used to produce cigarettes, cigars and chewing tobacco.
Explanation: The name tobacco is commonly used for plants of the nightshade family. Tobacco is one of the most popular commercial crops cultivated in the world. The plants of tobacco attain a height of about 1-3 metres and have 10-20 leaves. The leaves of plants are processed to make cigarettes, cigars and chewing tobacco.
It is said that Christopher Columbus and his men, on landing on the island of Tobago in 1492, found the natives using tobacco leaves for pleasure. Since then the habit of smoking spread to different cultures all over the world. Thus, smoking became a big industry at the cost of health.
Explanation: If we talk about the history of Tobacco it is believed that for the first time Tobacco plants were discovered by Christopher Columbus and his crew members when they landed on the island of Tobago in 1492. They found that people of the island were using tobacco leaves for pleasure. And from there the habit of smoking spread to all parts of the world. At present, it is a very industry that takes a heavy toll on the health of the people consuming tobacco products.
Smoke contains over 4,000 chemicals; 43 of them are carcinogenic. These include chemicals such as polycyclic hydrocarbons. It also contains cellular irritants such as ammonia, formaldehyde, and oxides of nitrogen. Carbon monoxide, which binds to haemoglobin and reduces its oxygen-carrying capacity, is also present. The major component, however, is nicotine, which has harmful effects on the nervous system in humans. It is highly addictive and causes an increased heart rate and high blood pressure.
Explanation: The smoke produced by smoking has about 4000 chemicals and about 43 of them are responsible for cancer. There are also cellular irritants like ammonia, formaldehyde and oxides of nitrogen. The carbon monoxide gas which binds with the haemoglobin of blood thereby reducing its oxygen-carrying capacity is also present in it. The major component of tobacco smoke is nicotine which is harmful to our nervous system. It is highly addictive and increases our blood pressure and heart rate.
Uses of Tobacco
Nicotine obtained from the plant is widely used in agriculture as an insecticide. Refined tobacco seed oil can be used as a substitute for groundnut oil as it contains no nicotine. It can also be used in oil paint and varnish industries. Tobacco was used in the past in medicine as a sedative and for the treatment of gastrointestinal disorders. Nicotine is also a valuable constituent of many vitamins’ preparations.
Explanation: Nicotine is mainly used as an insecticide in agriculture. The refined oil of tobacco seed is used as an alternative to groundnut oil. It can also be used in the paint and varnish industry. In the past tobacco was used to prepare medicines to cure gastrointestinal problems and as a sedative. Nicotine is also used to prepare many vitamins.
It causes cancer and other diseases. It is a silent killer. Lung cancer is caused by the tar in tobacco smoke. People who smoke are ten times more likely to die from lung cancer than non-smokers. The mixture of nicotine and carbon monoxide in each cigarette smoke temporarily increases heart rate and blood pressure which strains the heart and blood vessels. This can cause heart attack and stroke. It slows the blood flow, cutting off oxygen to the feet and hands. Some smokers end up having their limbs amputated.
Explanation: Tobacco is mainly responsible for causing cancer and many other diseases. The tar present in tobacco smoke is responsible for lung cancer. Smokers are ten times more prone to die of lung cancer than non-smokers. The mixture of nicotine and carbon monoxide from cigarette smoke increases our blood pressure and heart rate which can result in a heart attack or stroke. It can also slow down the flow of blood to the limbs thereby cutting the supply of oxygen to them. Therefore, some smokers have to end up losing their limbs.
Carbon monoxide decreases the oxygen supply to muscles and the brain, making these organs stressed. Emphysema is an illness that slowly rots the lungs. People with emphysema often get bronchitis and suffer lung and heart diseases.
Explanation: The carbon monoxide gas inhaled during smoking binds with haemoglobin in the blood and reduces the oxygen-carrying capacity of the blood. As a result supply of oxygen to muscles and brain reduces which makes these organs stressed. The disease named emphysema which slowly rots the lungs is also caused due to smoking. The people having this disease also get infected by bronchitis, and lung and heart diseases more often.
Cigarette smoking during pregnancy increases the risk of low birth weight and even premature babies. Even passive smokers (inhaling smoke because of proximity to a smoker) also run the risk of developing many diseases in comparison to active smokers. People who smoke run a higher risk of cancer.
Explanation: Cigarette smoking during pregnancy period increases the risk of birth of low weight baby or even premature birth. Passive smokers (people who inhale the smoke of tobacco) also develop several health problems. People who are addicted to smoking have a higher risk of having cancer.
In Kashmir, people consume tobacco by inhaling smoke from the hookah which in the native language is called Jejeer. Life is precious. To live a healthy and fit life, one should take a balanced diet, lot of water and exercise daily
Explanation: In Kashmir tobacco is consumed by inhaling the smoke from the hookah which is named Jajeer in the Kashmiri language. Life is priceless and we have to take a balanced diet and drink a lot of water and exercise regularly to keep ourselves fit and healthy.
There is a lot of campaigning going on around the world against smoking. The unfortunate reality is that many youngsters are getting addicted to this harmful habit, little knowing the cost they shall have to pay in the long run. Even cigarette packets have warning lines written on them, “Smoking causes cancer”. World Anti-Tobacco Day is celebrated on the 31” of May every year to create awareness. But in spite of that people smoke and neglect their health. Willpower and family support can help one to quit smoking.
Explanation: Various NGOs and almost everywhere campaigning are going on all over the world against smoking and its ill effects but the sad reality is that there are so many youngsters which are getting addicted to tobacco products without caring about its aftermath. The cigarette packets also have a warning written on them which reads “Smoking causes cancer”. World Anti-Tobacco Day is celebrated on the 31″ of May every year to aware people of the harmful effects of tobacco but still, people neglect their health and run after tobacco products. Though it is not easy to come out of this addiction the willpower of a person and family support plays a huge role in helping someone in quitting smoking.