15 extra multiple-choice questions for Health and Diseases (10th Standard Science, Samacheer Kalvi), beyond the ones printed in the textbook — each with the correct option highlighted and a clear, worked explanation. Free to read in English and Tamil.
Q1
The use of certain drugs by an individual as a regular habit is called
- A. Drug addictionCorrect
- B. Drug resistance
- C. Drug tolerance
- D. Drug therapy
Explanation. The regular habitual use of certain drugs by an individual is called drug addiction or drug abuse, and it is distinct from the medical use of a drug.
Q2
The dependence of alcohol is called
- A. AlcoholismCorrect
- B. Cirrhosis
- C. Obesity
- D. Metastasis
Explanation. The dependence on alcohol is called alcoholism, and the person so affected is termed an alcoholic. Cirrhosis is the liver damage it can cause.
Q3
Inhaling tobacco smoke is called
- A. Chewing
- B. Snuffing
- C. SmokingCorrect
- D. Sniffing
Explanation. Tobacco is used for smoking, chewing and snuffing. Of these, inhaling the smoke of burning tobacco is specifically called smoking.
Q4
AIDS is caused by
- A. Human immunodeficiency virusCorrect
- B. Streptococci bacteria
- C. Plasmodium
- D. A fungus
Explanation. AIDS is caused by the Human immunodeficiency virus, which attacks the immune system and leaves the body open to other infections.
Q5
World AIDS Day is observed every year on
- A. December 1Correct
- B. May 31
- C. June 5
- D. April 7
Explanation. Every year the first of December is observed as World AIDS Day, as part of the effort to educate people about the disease.
Q6
The national organisation that educates people about AIDS in our country is
- A. NACOCorrect
- B. ISRO
- C. ICAR
- D. CSIR
Explanation. The National AIDS Control Organization, abbreviated NACO, together with non governmental organisations, educates people about AIDS in India.
Q7
An abnormal and uncontrolled division of cells forming a mass of tissue is called a
- A. TumourCorrect
- B. Cyst
- C. Ulcer
- D. Clot
Explanation. Cancer is an abnormal and uncontrolled division of cells that invade and destroy surrounding tissue, forming a tumour or neoplasm.
Q8
Cancer of the connective tissue is called
- A. Carcinoma
- B. SarcomaCorrect
- C. Leukemia
- D. Lymphoma
Explanation. Sarcoma is the cancer arising in connective tissue. Carcinoma arises in epithelial cells, which is the pairing most often tested.
Q9
Blood cancer is otherwise known as
- A. LeukemiaCorrect
- B. Lymphoma
- C. Sarcoma
- D. Carcinoma
Explanation. Leukemia is the cancer of blood forming tissue and is commonly called blood cancer. It is marked by an abnormal increase in white blood cells.
Q10
Agents that cause cancer are called
- A. CarcinogensCorrect
- B. Allergens
- C. Antigens
- D. Pathogens
Explanation. Carcinogens are cancer causing agents. Antigens provoke an immune response and pathogens cause infectious disease, which makes them different in kind.
Q11
Diabetes mellitus is characterised by increased blood glucose because of a problem with
- A. Adrenaline
- B. InsulinCorrect
- C. Thyroxine
- D. Nicotine
Explanation. Diabetes mellitus is a chronic metabolic disorder caused by insufficient or deficient insulin secretion, failure of secretion, or resistance to insulin.
Q12
The state in which there is an accumulation of excess body fat with an abnormal increase in body weight is
- A. ObesityCorrect
- B. Cirrhosis
- C. Metastasis
- D. Polyphagia
Explanation. Obesity is the state in which excess body fat accumulates and body weight rises abnormally. It is a risk factor for several other disorders.
Q13
Coronary heart disease is caused mainly by the deposition of
- A. Cholesterol in the blood vesselsCorrect
- B. Calcium in the bones
- C. Glucose in the muscles
- D. Urea in the kidneys
Explanation. Coronary heart disease is the most common form of heart disease and is caused by the deposition of cholesterol in the blood vessels.
Q14
Excessive thirst as a symptom of diabetes is termed
- A. Polyphagia
- B. PolydipsiaCorrect
- C. Polyuria
- D. Polypnea
Explanation. Polydipsia means excessive thirst, while polyphagia means excessive hunger. Both appear among the symptoms of diabetes mellitus.
Q15
Prolonged use of alcohol depresses the nervous system because it acts as
- A. a stimulant
- B. a sedative and analgesic substanceCorrect
- C. an antibiotic
- D. a carcinogen
Explanation. Prolonged use of alcohol depresses the nervous system by acting as a sedative and analgesic substance, and it also causes fatty liver leading to cirrhosis.
About these Health and Diseases questions
These are the Additional multiple-choice questions for Health and Diseases from the Tamil Nadu State Board (Samacheer Kalvi) 10th Standard Science syllabus. Each question shows the correct option and an original, step-by-step explanation so you understand the method, not just the answer. Use the answer key above to jump to any question, then take the practice test to check yourself under exam-like conditions.
Frequently asked questions
How many MCQs are there in Health and Diseases?
This chapter has 15 book-back multiple-choice questions, each with the correct answer and a step-by-step explanation.
Are these 10th Standard Science MCQs free to practise online?
Yes. Every question, answer and explanation here is free, and you can also take them as a timed practice test.
Where can I find the Health and Diseases book-back answers?
The correct option for each question is highlighted on this page with a worked explanation, plus a quick answer-key summary at the top.
