4) Iron
    (a)  1 and 3
    (b)  2 and 3
    (c)  1 and 4
    (d)  2 and 4
Ans: (c)
56. Which of the following tests helps in diagnosis of cancer? [CBI 1991]
    (a) X-ray
    (b) Urine test
    (c) Blood test
    (d) Biopsy test
Ans: (d)
57. Which of the following are true about kwashiorkar disease?
         1) It occurs in infants upto 1 year of age.
         2) It is characterised by oedema i.e. swelling of the body.
         3) The skin of the person suffering from it becomes dry and hair turns reddish.
         4) It can be cured by giving a protein-rich diet.
    (a) 1, 2 and 3
    (b) 2, 3 and 4
    (c) 1, 3 and 4
    (d) 1, 2 and 4
Ans: (b)
58. Match the following:
    A. Air-borne             1. Tetanus
    B. Water-borne           2. Tuberculosis
    C. Contact               3. Cholera
    D. Wound                 4. Syphilis
         A         B         C         D
    (a)  4         3         2         1
    (b)  3         2         4         1
    (c)  2         3         4         1
    (d)  2         3         1         4
Ans: (c)
59. The richest source of vitamin D is :
    (a) cod liver oil
    (b) spinach
    (c) milk
    (d) cheese
Ans: (a)
60. What is the importance of roughage in our diet?
         1) It helps in retaining water in the body.
         2) It is necessary for normal functioning of the liver.
         3) It adds bulk to the food and prevents constipation.
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