Which of the following isotopes is most dangerous to Homo sapiens?

Related Mcqs:

1. Which of the following world is related to Homo sapiens?

   A. Herbivore
   B. Carnivore
   C. Autotroph
   D. Omnivore

2. The following radioactive isotopes are formed by nuclear fission:

   A. Sr90, I131
   B. Cr51, Cu64
   C. Zr95, Mn54
   D. All of these

3. Which one is not dangerous for life?

   A. Biopollutants
   B. Ozone layer
   C. Nuclear blast
   D. Deforestation

4. Which of the following does not cause pollution?

   A. CO2
   B. SO2
   C. H2
   D. CO

5. The maximum biomagnification would be in which of the following in case of aquatic ecosystem?

   A. Fishes
   B. Birds
   C. Zooplanktons
   D. Phytoplanktons

6. Which of the following air pollutant is carcinogenic?

   A. Ethylene
   B. 3.4 Benzpyrene
   C. N2O
   D. PAN

7. Which of the following is generally used for induced mutagenesis in crop plants?

   A. Gamma rays (from cobalt 60)
   B. X-rays
   C. UV (260 nm)
   D. Alpha particles

8. Which of the following gases is regarded as an atmospheric pollutant?

   A. O2
   B. O3
   C. SO2
   D. N2

9. Which of the following is not an important atmospheric pollutant?

   A. CO
   B. SO2
   C. CO2
   D. Hydrocarbons

10. Which of the following is likely to have the highest level of DDT deposition in its body?

    A. Eel
    B. Crab
    C. Sea gull
    D. Phytoplanktons