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Which of the following is a communicable disease caused by viruses?

A. Cholera

B. Dysentery

C. Diabetes

D. Measles

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  1. In the nitrogen cycle, denitrifying bacteria
  2. Cupellation is used in the purification of
  3. Suspended impurities in water are effectively removed by
  4. Which of the following is not a characteristic of potable water?
  5. Which of the following is not a metal?
  6. Which of the following is not a physical change?
  7. The discoverer of chloroform was
  8. The purest form of carbon is
  9. Hydrogen gas has
  10. Metals are usually heavy. A light metal is
  11. Which among the following gases present in the air discolours brass nameplates?
  12. The modern system of symbols was evolved by
  13. Proteins are polymerisation products of
  14. Colour blindness is
  15. During fermentation, the by-product is
  16. Clark's method for removal of temporary hardness in water uses
  17. A substance used both as an explosive and as a germicide is
  18. Which one of the following is present in the largest amount in terms of per cent by mass in the earth's…
  19. Vinegar is an aqueous solution of
  20. Which of the following la a very good supporter of combustion?
  21. The commonest ore of aluminium is
  22. The pure at form of iron is
  23. The non-metal which has a shining appearance is
  24. The principle involved in dialysis, a treatment administered to patients with affected kidneys is
  25. Which of the following is a mixture?
  26. The pH or pure water is nearly 7.0 It will increase on the addition or
  27. According to the modern Periodic Law, the properties of elements are periodic functions of their
  28. The malarial parasite was discovered by
  29. Which of the following cannot be used as fuel?
  30. Water always contains hydrogen and oxygen in the ratio 1:8 by weight. This is in accordance with the