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MCQs

Total Questions : 943 | Page 3 of 95 pages
Question 21. The most abundant isotope of natural uranium is
  1.    92U238
  2.    92U235
  3.    92U234
  4.    None of these
 Discuss Question
Answer: Option A. -> 92U238
Question 22. Which of the following is artificially produced as it does not occur in nature?
  1.    Uranium⁻²35
  2.    Uranium⁻²33
  3.    Plutonium⁻²39
  4.    Both B and C
 Discuss Question
Answer: Option D. -> Both B and C
Question 23. Function of control rod in a nuclear reactor is to control
  1.    Temperature
  2.    Pressure
  3.    Fuel consumption
  4.    Absorption of neutrons
 Discuss Question
Answer: Option D. -> Absorption of neutrons
Question 24. Atoms with same number of neutrons, but different number of nucleons are called
  1.    Isotones
  2.    Isobars
  3.    Isotopes
  4.    Isoters
 Discuss Question
Answer: Option A. -> Isotones
Question 25. The mass number of an element is equal to the number of __________ in the nucleus.
  1.    Electrons
  2.    Neutrons
  3.    Protons
  4.    Neutrons plus protons (i.e., nucleons)
 Discuss Question
Answer: Option D. -> Neutrons plus protons (i.e., nucleons)
Question 26. Radioactivity of an isotope is expressed in
  1.    Barn
  2.    MeV
  3.    Curie
  4.    Ergs
 Discuss Question
Answer: Option C. -> Curie
Question 27. Nuclear power plant is not located at
  1.    Talcher (Orissa)
  2.    Rawatbhata (Rajasthan)
  3.    Kalpakkam (Tamilnadu)
  4.    Kaiga (Karnataka)
 Discuss Question
Answer: Option A. -> Talcher (Orissa)
Question 28. Out of the followingplaces, a nuclear power plant is not located at
  1.    Talcher (Orissa)
  2.    Kaiga (Karnataka)
  3.    Rawatbhata (Rajsthan)
  4.    Kalpakkam (Tamilnadu)
 Discuss Question
Answer: Option A. -> Talcher (Orissa)
Question 29. When the difference between mass number and atomic number of atoms of two or more elements are same, the atoms are termed as
  1.    Isomers
  2.    Isotopes
  3.    Isobars
  4.    Isotones
 Discuss Question
Answer: Option D. -> Isotones
Question 30. The disintegration rate of a radioactive element
  1.    Progressively increases
  2.    Progressively decreases
  3.    Remains constant throughout
  4.    May increase or decrease depending on the material
 Discuss Question
Answer: Option B. -> Progressively decreases

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