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Tobacco is smoked in cigarettes, cigars and pipes. Research shows that tobacco-related diseases kill
nearly 13 500 people worldwide every day. It is predicted that by 2020, tobacco-related diseases will
cause 12% of all deaths globally. Tobacco smoke contains many harmful substances. The most damaging
substances are tar, nicotine and carbon monoxide.
Some people use nicotine patches to help them to give up smoking. The patches are put on skin and
release nicotine into the blood. This helps to relieve cravings and withdrawal symptoms when people
have stopped smoking.
To study the effectiveness of nicotine patches, a group of 100 smokers who want to give up smoking is
chosen randomly. The group is to be studied for six months. The effectiveness of the nicotine patches is to
be measured by finding out how many people in the group have not resumed smoking by the end of the
study.

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Question 1
Which one of the following would be the best option in the study?
A. All people in the group wear patches.
B. All people wear patches except one who tries to give up smoking without them.
C. Make it optional for people to wear patches
D. Half are randomly chosen to use patches and the other half do not use them.

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The graph also shows the behavioural pattern of people in consuming cigarettes over time. Which of these
statements can be inferred from the graph?
(i) Both cigarettes smoked and lung cancer deaths peaked around the same time.
(ii) There has been a consistent increase in incidences of lung cancer over a period of time.
(iii) There has been a significant decrease in the number of cigarettes smoked and lung cancer deaths in
the later periods.
(iv) The number of cigarettes smoked is directly proportional to the probability of getting lung cancer.
A. (i) and (ii)
B. (iii) and (iv)
C. (i), (ii) and (iii)
D. (ii), (iii) and (iv)

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NAME TWO DISEASES CAUSED BY ACTIVE SMOKING .

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The above graph shows per capita cigarette consumption w.r.t time and lung cancer deaths per 100000
w.r.t time on the same graph. From this graph, we can conclude that:
A. Increase in cigarette smoking causes a decrease in deaths due to lung cancer.
B. Increase in cigarette smoking has no effect on deaths due to lung cancer.
C. Increase in cigarette smoking causes an increase in deaths due to lung cancer immediately.
D. Increase in cigarette smoking causes an increase in deaths due to lung cancer after a time lag.

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B

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B

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Cancer, Lung diseases

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Option B

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Option B

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D

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Option D

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D.

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Cancer diseases

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D

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Option B

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Cancer , lung disease

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Lung Cancer, Heart Attack.

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Option D

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Cancer, lung disease

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Option D

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D.

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B

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Option D

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Option B

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D

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B

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b

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D

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Read the para

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D

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Lunge cancer
And the people will die

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Option D

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Lung cancer , Heart diseases , Asthma

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CANCER AND LUNG DISEASES.

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Lung cancer and heart diseases

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B

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d

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D

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D

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Option B

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C

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Lung disease, Cancer

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Option D

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D

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Cancer, lung diseases

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Option D

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Option D

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Lung cancer, diabetes, other lung diseases and heart attack are some e.g

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D

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mouth cancer and lung cancer

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Lung cancers, respiration problems

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D

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Cancer, lungs disease

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Cancer, lung disease

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B

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D

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Lung cancer,heart disease

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D

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Heart diseases,lung cancer