Description : Why is there no formula to compute the half-life of any given radioisotope?
Last Answer : I don’t think the theories contain enough information about what is actually going on with subatomic particles that leads to those results.
Last Answer : Radioisotope is used to diagnose goiter.
Description : The radioisotope , tritium `(""_(1)^(3)H)` has a half-life of 12.3 years. If the initial amount of tritium is 32 mg , how many milligrams of it would
Last Answer : The radioisotope , tritium `(""_(1)^(3)H)` has a half-life of 12.3 years. If the initial amount of tritium is 32 ... A. 1 mg B. 2 mg C. 4 mg D. 8 mg
Description : A radioisotope has a half life of 10 days. If today there is `125 g ` of it left, what was its mass 40 days earlier ? a)600g b)1000g c)1250g d)2000g
Last Answer : A radioisotope has a half life of 10 days. If today there is `125 g ` of it left, what was its mass ... d)2000g A. 600g B. 1000g C. 1250g D. 2000g
Description : What is the half life of 3 g sample of radioisotope that decay to 0.75 g in 30 days?
Last Answer : 15 days
Description : What is the half life of 12 g sample of radioisotope that decayed to 6 g in 28 years?
Last Answer : 28 years
Description : The amount of a radioisotope remaining undecayed after a time equal to four times its half life, will be __________ percent. (A) 3.125 (B) 6.25 (C) 12.50 (D) 25
Last Answer : (B) 6.25
Description : The radioisotope used to study the thyroid gland is (A) Iodine (B) Cobalt (C) Iron (D) Carbon
Last Answer : (A) Iodine
Description : If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2 gm of the same isotope will be __________ days. (A) 5 (B) 10 (C) 20 (D) 30
Last Answer : (B) 10
Description : Is a nucleonic sensing method employing usually one or more radioisotope sources and radiation detectors.
Last Answer : Radiation sensing
Description : If the half-life of a radioisotope is 2 days, after how many days is the quantity reduced to 12.5% of its original amount? w) 4 days x) 6 days y) 8 days z) 10 days
Last Answer : ANSWER: X -- 6 DAYS
Description : When a radioisotope undergoes beta minus decay, does its atomic number: w) increase x) decrease y) remain the same z) vary depending on the element involved
Last Answer : ANSWER: W -- INCREASE
Description : Fifty micrograms of an isotope have decayed to 12.5 micrograms after 12 hours. What is the half life of the radioisotope?
Last Answer : ANSWER: SIX HOURS
Description : Which of the following does NOT generate changes to the Project documents: A. Define Activities B. Sequence Activities C. Estimate Activity Resources D. Estimate Activity Durations
Last Answer : A. Define Activities
Description : Which of the following is not affected by temperature changes? (A) Fugacity (B) Activity co-efficient (C) Free energy (D) None of these
Last Answer : (D) None of these
Description : A critical ratio scheduling (A) Determines the status of each activity (B) Adjusts automatically changes in activity progress (C) Is a dynamic system (D) None of these
Description : Natural rate of unemployment increases due to A. General downturn in business activity B. Changes in labor market C. Structural changes in economy D. Frequent changes of jobs by labor
Last Answer : D. Frequent changes of jobs by labor
Description : Cost behaviour analysis is a study of how a firm's costs A. relate to competitors' costs B. relate to general price level changes C. respond to changes in activity levels within the company D. respond to changes in the gross national product
Last Answer : C. respond to changes in activity levels within the company
Description : Which of the following factors should not be included in PESTLE analysis? A. Government re-cycling policy. B. Proposed reduction in interest rates. C. Competitor activity. D. Demographic changes.
Last Answer : C. Competitor activity.
Description : Natural rate of unemployment increases due to (a) General downturn in business activity ; (b) Changes in labor market ; (c) Structural changes in economy ; (d) Frequent changes of jobs by labor
Last Answer : (d) Frequent changes of jobs by labor
Description : Innovation is the ---------------activity leading to changes. a) Planned b) Accidental c) virtual
Last Answer : Ans : a.