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#Question id: 19506


The elements with atomic numbers 9, 17, 35, 53, 85 are all ———-

#XL - P Chemistry
  1. halogens
  2. noble gases
  3. alkali earth metals
  4. transition metals

Answer:- Option(s): 1


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#Question id: 31427

#XL - S Microbiology

If the number of bacteria in a culture doubles every 30 minutes, how many bacteria will be present after 3 hours if the initial count is 50?

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#Question id: 31428

#XL - S Microbiology

If a bacterial species has a generation time of 20 minutes, how many generations will occur in 2 hours?

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#Question id: 31429

#XL - S Microbiology

In denitrification, nitrite (NO₂⁻) is reduced to which of the following products?

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#Question id: 31430

#XL - S Microbiology

Which of the following bacteria can grow in the presence of oxygen?

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#Question id: 31431

#XL - S Microbiology

Which bacterial type grows best in high oxygen concentrations and cannot survive without oxygen?

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#Question id: 31432

#XL - S Microbiology

Which of the following antibiotics binds to D-Ala-D-Ala amino acids to inhibit peptidoglycan cross-linking?

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