Acid rain damages building Ozone isv the main component of photochemical smog Ni

Question

Acid rain damages building Ozone isv the main component of photochemical smog Nitrogen oxides are the main component of acid rain The US produces 50% of the world's greenhouse gases Bacteria may be gram positive or gram negative Salmonella bacteria causes yellow fever Irradiation causes food to bt radioactive Which of the following is not a protozoa (a) entameba histolytica (b) Giardia intestinales (c) Salmonella (d) Cryptosporidium parvum All of the following are water disinfectants except (a) carbon monoxide (b) chlorine (c) ozone (d) UV radiation Viral Hepatitis A is spread by (a) feacal - oral route (b) contaminated food (c) contaminated water (d) all of the above which of the following is not a bacterium (a) salmonella (b) shigella (e) vibrio cholerae (d) norovinas Which of the following is/are part of the hydrologic cycle

Explanation / Answer

14) Acid rain damages buildings - True.

15) Ozone is the main component of photochemical smog - True.

16) Nitogen oxides are the main component of acid rain - True.

17) The US produces 50% of world's greenhouse gases - False.

18) Bacteria may be Gram positive or Gram negative - True.

19) Salmonella bacteria causes yellow fever - False.

Section B

1) Salmonella(c) is not a protozoa.

2) Carbon monoxide(a) is not a water disinfectant.

4) Norovirus(d) is not a bacterium.

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