CSS 2013 General Science and Ability MCQs
Question 31. Vacuum tubes have been replaced by: (CSS 2013)
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Conductors
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Diodes
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Transistors
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None of these
Question 32. Dacron is: (CSS 2013)
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Polyethylene
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Epoxy
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Polyamide
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None of these
Question 33. It is a secondary plant nutrient: (CSS 2013)
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Nitrogen
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Phosphorus
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Sulphur
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None of these
Question 34. An area of microbiology that is concerned with the occurrence of disease in human population is: (CSS 2013)
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Immunology
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Parasitology
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Epidemiology
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None of these
Question 35. The number of electrons of a neutral atom is automatically known if one knows the: (CSS 2013)
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Atomic number
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Atomic weight
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Number of orbitals
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None of these
