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Health & Diseases

86 questions in Science & Technology.

Asked in 2011, 2010, 2008, 2007, 2006, 2005, 2004, 2003

2011 · Q91Science & TechnologyHealth & Diseaseseasy

Regular intake of fresh fruits and vegetables is recommended in the diet since they are a good source of antioxidants. How do antioxidants help a person maintain health and promote longevity?

  1. (a)They activate the enzymes necessary for vitamin synthesis in the body and help prevent vitamin deficiency
  2. (b)They prevent excessive oxidation of carbohydrates, fats and proteins in the body and help avoid unnecessary wastage of energy
  3. (c)They neutralize the free radicals produced in the body during metabolism
  4. (d)They activate certain genes in the cells of the body and help delay the ageing process
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Official answer(c) They neutralize the free radicals produced in the body during metabolism

2010 · Q21Science & TechnologyHealth & Diseasesmoderate

Widespread resistance of malarial parasite to drugs like chloroquine has prompted attempts to develop a malarial vaccine to combat malaria. Why is it difficult to develop an effective malaria vaccine ?

  1. (a)Malaria is caused by several species of Plasmodium
  2. (b)Man does not develop immunity to malaria during natural infection
  3. (c)Vaccines can be developed only against bacteria
  4. (d)Man is only an intermediate host and not the definitive host
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Official answer(b) Man does not develop immunity to malaria during natural infection

2010 · Q37Science & TechnologyHealth & Diseasesmoderate

Recently, LASIK (Laser Assisted In-Situ Keratomileusis) procedure is being made popular for vision correction. Which one of the following statements in this context is not correct?

  1. (a)LASIK procedure is used to correct refractive errors of the eye
  2. (b)It is a procedure that permanently changes the shapes of the cornea
  3. (c)It reduces a person’s dependence on glasses or contact lenses
  4. (d)It is a procedure that can be done on the person of any age
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Official answer(d) It is a procedure that can be done on the person of any age

2010 · Q90Science & TechnologyHealth & Diseasesmoderate

With reference to the treatment of cancerous tumours, a tool called cyberknife has been making the news. In this context, which one of the following statements is not correct?

  1. (a)It is a robotic image guided system
  2. (b)It delivers an extremely precise dose of radiation
  3. (c)It has the capability of achieving sub-millimetre accuracy
  4. (d)It can map the spread of tumour in the body
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Official answer(d) It can map the spread of tumour in the body

2010 · Q126Science & TechnologyHealth & Diseaseseasy

Excessive release of the pollutant carbon monoxide (CO) into the air may produce a condition in which oxygen supply in the human body decreases. What causes this condition ?

  1. (a)When inhaled into the human body, CO is converted into CO₂
  2. (b)The inhaled CO has much higher affinity for haemoglobin as compared to oxygen
  3. (c)The inhaled CO destroys the chemical structure of haemoglobin
  4. (d)The inhaled CO adversely affects the respiratory centre in the brain
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Official answer(b) The inhaled CO has much higher affinity for haemoglobin as compared to oxygen

2010 · Q127Science & TechnologyHealth & Diseasesmoderate

Consider the following statements: 1. Every individual in the population is equally susceptible host for Swine Flu. 2. Antibiotics have no role in the primary treatment of Swine Flu. 3. To prevent the future spread of Swine Flu in the epidemic area, the swine (pigs) must all be culled. Which of the statements given above is/are correct ?

  1. (a)1 and 2 only
  2. (b)2 only
  3. (c)2 and 3 only
  4. (d)1, 2 and 3
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Official answer(a) 1 and 2 only

2010 · Q128Science & TechnologyHealth & Diseasesmoderate

With regard to the transmission of the Human Immunodeficiency Virus, which one of the following statements is not correct ?

  1. (a)The chances of transmission from female to male are twice as likely as from male to female
  2. (b)The chances of transmission are more if a person suffers from other sexually transmitted infections
  3. (c)An infected mother can transmit the infection to her baby during pregnancy, at childbirth and by breast feeding
  4. (d)The risk of contracting infection from transfusion of infected blood is much higher than an exposure to contaminated needle
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Official answer(a) The chances of transmission from female to male are twice as likely as from male to female

2006 · Q6Science & TechnologyHealth & Diseasesmoderate

Consider the following statements: 1. Caffeine, a constituent of tea and coffee, is a diuretic. 2. Citric acid is used in soft drinks. 3. Ascorbic acid is essential for the formation of bones and teeth. 4. Citric acid is a good substitution for ascorbic acid in our nutrition. Which of the statements given above are correct?

  1. (a)1 and 2 only
  2. (b)1, 2 and 3 only
  3. (c)3 and 4 only
  4. (d)1, 2, 3 and 4
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Official answer(b) 1, 2 and 3 only

2004 · Q10Science & TechnologyHealth & Diseasesmoderate

Consider the following statements: 1. Non-function of lachrymal gland is an important symptom of deficiency of Vitamin A. 2. Deficiency of Vitamin B1 can lead to indigestion and heart enlargement. 3. Vitamin C deficiency can lead to pain in the muscles. 4. Deficiency of Vitamin D causes increased loss of Ca++ in urine. Which of these statements given above are correct?

  1. (a)1 and 2
  2. (b)2, 3 and 4
  3. (c)1, 3 and 4
  4. (d)1, 2, 3 and 4
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Official answer(a) 1 and 2