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41. Quantity of fresh air required for a man is:
  A.  1000 cubic feet of air for every 20 seconds
  B.  1000 cubic feet of air for every 20 minutes
  C.  1000 cubic feet of air for every 10 minutes
  D.  1000 cubic feet of air for every 10 seconds
     
   
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42. Reserpine is used to:
  A.  alleviate pain
  B.  increase blood pressure when it is low
  C.  reduce high blood pressure
  D.  cure arthritis
     
   
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43. ELISA test is employed to diagonse:
  A.  Polio virus
  B.  AIDS antibodies
  C.  Cancer
  D.  Tuberculosis bacterium
     
   
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44. Why excessive heating and repeated use of cooking oil is most undesirable?
  A.  Carcinogenic substances like benzpyrene are produced
  B.  The oil vapours can cause indoor pollution
  C.  Nutrient value of food is lost
  D.  Loss and wastage of oil
     
   
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45. Which one of the following is a female sex hormone?
  A.  Oxytocin
  B.  Androgen
  C.  Estrogen
  D.  Insulin
     
   
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46. Clove, the commonly used spice, is obtained from the:
  A.  root
  B.  flower bud
  C.  Stem
  D.  fruit
     
   
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47. Labourers who do hard manual labour develop thick skin on their plams and soles due to:
  A.  thick epidermis
  B.  thick dermis
  C.  thick subcutaneious tissue
  D.  all the these
     
   
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48. Maximum photosyntheitc actvitity occurs in:
  A.  blue and orange region of light
  B.  green and yellow region of light
  C.  blue and red region of light
  D.  violet and orange region of light
     
   
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49. AIDS virus has:
  A.  single-stranded RNA
  B.  double-stranded RNA
  C.  single-stranded DNA
  D.  double-stranded DNA
     
   
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50. A 'breath test' used by traffic police to check drunken driving uses:
  A.  Potassium permanganate sulphuric acid
  B.  Potassium dichromate-sulphuric acid
  C.  Turmeric on filter paper
  D.  Silica gel coated with silver nitrate
     
   
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