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Question:- The half life of a radioactive substance is 4 months then the time spent in decaying ¾th of the substance would be: A. 3 months B. 4 months C. 8 months D. 12 months
Answer:- C
Question:- The estimation of the age of the earth is done by: A. Uranium dating B. Carbon dating C. Atomic clock D. Bio clock
Answer:- A
Question:- The isotope of any atomic nucleus is in which: A. Number of neutrons be same but number of protons be different B. Number of protons be same but the number of neutrons be different C. Number of protons and neutrons both are same D. Number of protons and neutrons both are different
Answer:- B
Question:- The group displacement law is propounded by: A. Sody & Fujan B. Rutherford & Sody C. Rutherford & Fujan D. Rutherford & Madam Curie
Answer:- A
Question:- Which of the following is estimated by the radio carbon dating? A. Age of the human being B. Age of the fossils C. Disease of the human body D. Purity of the metals
Answer:- B
Question:- The number of isotopes in the hydrogen: A. 2 B. 3 C. 4 D. 5
Answer:- B
Question:- Which of the following is not the isotope of hydrogen? A. Protium B. Deuterium C. Iterium D. Tritium
Answer:- C
Question:- Which of the following is not the isotope of hydrogen? A. Protium B. Deuterium C. Iterium D. Tritium
Answer:- C
Question:- 8O16, 8O17, 8O18 are called: A. Isotopes B. Isotones C. Isobars D. Isoneutrons
Answer:- A
Question:- What is the radioactive isotope of hydrogen is called? A. Deuterium B. Rotium C. Radium D. Tritium
Answer:- D
Question:- Which isotope is used through the radioactive age estimation technique to obtain (determine) the age of rocks? A. Uranium isotope B. Plutonium isotope C. Thorium isotope D. Carbon isotope
Answer:- A
Question:- The radio isotope used to control the disease like blood cancer (Leukaemia) is: A. Phosphorus-32 B. Cobalt-60 C. Iodine-131 D. Sodium-24
Answer:- B
Question:- Isotones are those which have: A. Equal number of protons B. Equal number of neutrons C. Equal number of nucleons D. None of these
Answer:- B
Question:- The iso electronic of AI+3 is: A. CI- B. AI C. S- D. F-
Answer:- D