The primary nuclear fuel used in the atom today is:

Related Mcqs:

1. Keeping the frequency of nuclear tests, it is estimated that on an average the five nuclear powers conducted nuclear tests at the rate of:

   A. One test every 20th day
   B. One test every 13th day
   C. One test every 11th day
   D. One test every 9th day

2. Exposure of human beings to high energy from nuclear power plants can cause:

   A. Cancer of skin and bone
   B. Cancer of heart and brain
   C. Cancer of skin and bone marrow
   D. Cancer of kidneys

3. Fuel wood is:

   A. Wood has a significant role to play in meeting the domestic energy requirements
   B. Wood fuels must replace commercial fuels to save the scarce foreign exchange and release natural gas for better and more productive utilization
   C. Both (a) & (b)
   D. None of these

4. Which of the following habitats is most unsuitable for primary productivity:

   A. Meadow
   B. Forested river bank
   C. Cave
   D. Pond

5. The number of primary producers within a specified area world be maximum in:

   A. Pond ecosystem
   B. Grassland ecosystem
   C. Desert ecosystem
   D. Forest ecosystem

6. Which of the following ecosystem has highest gross primary productivity:

   A. Grassland
   B. Coral reefs
   C. Mangroves
   D. Rain forest

7. Which ecosystem has the highest primary productivity?

   A. Pond ecosystem
   B. Lake ecosystem
   C. Grassland ecosystem
   D. Forest ecosystem

8. These belong to the category of primary consumers:

   A. Snakes and frogs
   B. Water insects
   C. Eagle and snakes
   D. Insects and cattle

9. Aerosols reduce primary productivity by:

   A. Decreasing O2
   B. Reducing photosynthesis
   C. Competing with CO2
   D. Being toxic to chloroplasts

10. The primary succession refers to the development of communities on a:

    A. Freshly cleared crop field
    B. Forest clearing after devastating fire
    C. Pons, freshly filled water after a dry phase
    D. Newly-exposed habitat with no record of earlier vegetation