Description : A 300mm diameter pipe, 5mm wall thickness is to be radiographed using the double wall single image technique. The source to be used is Iridium. Which of the following statements is true? a) ... problem with the technique d) Only the double wall, double image technique should be used with Iridium
Last Answer : c) There is no problem with the technique
Description : The radioactive element most commonly detected in humans is: w) potassium-40 x) cobalt-60 y) iodine-131 z) plutonium-238
Last Answer : ANSWER: W -- POTASSIUM-40
Description : Under which one of the following articles of Indian Constitution, provision of creation or abolition of Legislative Councils in States are made? (1) Article 168 (2) Article 169 (3) Article 170 (4) Article 171
Last Answer : (2) Article 169 Explanation: Article 169 deals with the provision of creation or abolition of Legislative Councils in states.
Description : Each side of an equilateral triand 12 is \( 24 cm \) the mid - point of its sides are joined to form another tranpla this brress is doins centinuously infinite46. The perimeter of 7 th triangle is \( ( \) in \( cm ) \)a) \( \ ... of the 5th triangle is (in \( cm \) )a) 6b) \( 1.5 \)c) \( 0.75 \)d) 3
Last Answer : Each side of an equilateral triand 12 is \( 24 cm \) the mid - point of its sides are joined to form another tranpla ... ( 1.5 \) c) \( 0.75 \) d) 3
Description : A radioactive isotope having a half life of 3 days was received after 12 days. It was found that there were 3 gm of the isotopes in the container. The
Last Answer : A radioactive isotope having a half life of 3 days was received after 12 days. It was found that there were 3 gm of ... 48 g B. 36 g C. 24 g D. 12 g
Description : What radioactive element is routinely used in treating hyperthyroidism, and in reducing thyroid activity? w) Iron-59 x) Gold-198 y) Cobalt-60 z) Iodine-131
Last Answer : ANSWER: Z -- IODINE-131
Description : The half life of cobalt 60 is 5.3 yers after 10.6years how much of the original cobalt 60 remains?
Last Answer : One quarter-Apex
Description : If `3//4` quantity of a radioactive substance disintegrates in 2 hours, its half`-` life period will be a)`15 mi n` b) `30 mi n` c)`60 mi n` d)`90 mi
Last Answer : If `3//4` quantity of a radioactive substance disintegrates in 2 hours, its half`-` life period will be ... B. 45 minutes C. 30 minutes D. 15 minutes
Last Answer : If `3//4` quantity of a radioactive substance disintegrates in 2 hours, its half`-` life period will be a)`15 mi n ... mi n` c)`60 mi n` d)`90 mi n`
Last Answer : If `3//4` quantity of a radioactive substance disintegrates in 2 hours, its half`-` life period will be ... B. 30 minutes C. 60 minutes D. 90 minutes
Description : The physical half life of radioactive 131I is: A. 8 hours B. 8 days C. 16 days D. 60 day
Last Answer : . 8 days
Description : What is the gcf of 60 156 169?
Last Answer : The GCF is 1.
Description : Name the isotopes of hydrogen. Write their atomic composition schematically and explain which of these is radioactive ?
Last Answer : Name the isotopes of hydrogen. Write their atomic composition schematically and explain which of these is radioactive?
Description : If a U-238 nucleus splits into two identical parts, the two nuclei so produced will be _____. A. Radioactive B. Stable C. Isotopes D. Isobars
Last Answer : ANSWER: A
Description : Artificially produced radioactive isotopes are used for (A) Power generation (B) Treatment of certain diseases (C) Initiating nuclear fission and fusion (D) All (A), (B) and (C)
Last Answer : (B) Treatment of certain diseases
Description : The process of generating radioactive isotopes during nuclear reaction is called
Last Answer : artificial radioactivity.
Description : What is the chemical sign of ytterbium and what are the main properties of this substance? Maybe you can write something about the use of ytterbium?
Last Answer : The chemical symbol for ytterbium is Yb. Main properties of ytterbium : Number plate: 70 Electronic structure: [Xe] 4f146s2 Atomic mass: 173.04 u ± 0.03 u Melting point: 818.8 ° C
Description : Is ytterbium man made?
Last Answer : ytterbium man made
Description : In a spent fuel assembly, the radioactive elements having the longest half-lives are the: w) fission products x) actinides y) activation products z) radioisotopes of lead
Last Answer : ANSWER: X -- ACTINIDES
Description : Among all cardiac glycosides, digoxin is the most commonly used, because: A. It is the most potent and fastest acting glycoside B. It has the highest and most consistent oral ... so that dose adjustments are possible every 2-3 days and toxicity abates rather rapidly after discontinuatio
Last Answer : D. It has intermediate plasma half life so that dose adjustments are possible every 2-3 days and toxicity abates rather rapidly after discontinuatio
Description : Which of the following is a radioactive element? (1) Cobalt (2) Uranium (3) Argon (4) Chromium
Last Answer : (2) Uranium Explanation: Uranium (U) is a naturally occurring radioactive element. Its nucleus is unstable, so the element is in a constant state of decay, seeking a more stable arrangement ... fission reaction. In fact, uranium was the element that made the discovery of radioactivity possible.
Last Answer : Uranium
Description : If a Company require 60 hosts then What is the best possible subnet mask? a. 255.255.255.0 b. 255.255.255.192 c. 255.255.225.224 d. 225.225.255.240
Last Answer : b. 255.255.255.192
Description : What is half f 170?
Last Answer : 68
Description : Students of two colleges appeared for Talent test carrying 250marks as maximum. The average of their marks for college1 & college 2 are 160 & 180respectively. If the number of students of college 1 is the half of the ... marks of all students of both the college? A) 170 B) 110 C) 173.33 D) 177.33
Last Answer : C) let the number of students of college 2 be '2N' then the number of students of college1 is 'N' the average marks for college1 is 160 the average marks for college 2 is 180 total marks of ... = 360N average marks of all students of both the colleges = (160N + 360N)/N+2N = 173.33marks
Description : The half`-` life periods of four isotopes are give below `:` `(i) 7.6 years` , ` ii. 4000 years` `iii. 6000 years`,`iv. 3.2xx10^(5) years` Which of th
Last Answer : The half`-` life periods of four isotopes are give below `:` `(i) 7.6 years` , ` ii. 4000 years` `iii. ... is most stable ? A. iv B. iii C. ii D. i
Description : What is a way to determine age of fossil by comparing number of stable isotopes to number of unstable isotopes using half life?
Last Answer : Carbon decay or carbon dating
Description : 6. Who discovered the iridium layer and won Nobel Prize also? -Discoveries and Inventions
Last Answer : Explanation: Luis Alvarez discovered the iridium layer and also he had given a theory that dinosaurs were driven to extinction by the aftermath of a large meteorite impact on Earth. In 1968, he won Nobel Prize in Physics.
Description : What is the sign of iridium ?
Last Answer : Ir Iridium signal
Description : What is the chemical sign of iridium and what are the main properties of this substance?
Last Answer : Chemical symbol for iridium Ir. Main properties: Electronic structure: [Xe] 4f145d76s2 Atomic mass: 192,217 u ± 0.003 u Number: 77 Melting point: 2,447 ° C
Description : Name two elements that find wide application in transistor industry – (1) Silicon and Germanium (2) Carbon and Platinum (3) Iridium and Germanium (4) Tungsten and Platinum
Last Answer : (1) Silicon and Germanium Explanation: A transistor is a semiconductor device used to amplify and switch electronic signals and electrical power. Semiconductor material (date first used): the metalloids ... -germanium (1989), the allotrope of carbon graphene (research ongoing since 2004), etc.
Description : An automated ship-to-shore distress alerting system using satellites and advanced terrestrial communications systems. A. GPS B. Iridium system C. INMARSAT D. GMDSS
Last Answer : D. GMDSS
Description : What satellite system is also known as Navstar? A. GPS B. Iridium C. Globalstar D. Intelsat
Last Answer : A. GPS
Description : Iridium satellites can provide data communications of up ____ bps data rate. A. 1200 B. 4800 C. 2400 D. 3840
Last Answer : C. 2400
Description : What is the orbit of Motorola’s Iridium satellite system? A. Polar B. Equatorial C. Inclined elliptical D. Inclined equatorial
Last Answer : A. Polar
Description : What is considered as the most advanced satellite system developed for cellular telephones? A. Iridium B. Globalstar C. ANIK D. Molniya
Last Answer : A. Iridium
Description : One of the first satellite system catering personal based communications services scheduled for operation. A. Iridium system B. Plutonium system C. Indium system D. Gallium system
Last Answer : A. Iridium system
Description : Which one of the following elements is not found in nature? w) Technetium x) Iridium y) Osmium z) Molybdenum
Last Answer : ANSWER: W -- TECHNETIUM
Description : Name the element discovered upon its extraction from pitchblende? w) platinum x) uranium y) iridium z) plutonium
Last Answer : ANSWER: X -- URANIUM
Description : Name two elements that find wide application in transistor industry (1) Silicon and Germanium (2) Carbon and Platinum (3) Iridium and Germanium (4) Tungsten and Platinum
Last Answer : Silicon and Germanium
Description : Do the thieves who stole the Cobalt 60 deserve sympathy or the Darwin Award?
Last Answer : They are going to their own reward… and they can glow in the dark on the way there.
Description : What particle is emitted when Cobalt-60 decays to Nickel-60?
Last Answer : Answers is the place to go to get the answers you need and to ask the questions you want
Description : Cobalt (60) isotope is used in the treatment of which disease? (1) Heart diseases (2) cancer (3) diabetes (4) skin diseases
Last Answer : (2) cancer Explanation: In cobalt-60 therapy, cobalt-60- generated gamma radiation is used to destroy tumors. Cobalt-60 therapy is also known as Gamma Knife® therapy.
Description : Which rays are produced by cobalt-60 in industrial radiography ?
Last Answer : Gamma rays.
Description : Which of the following is generally used for induced mutagenesis in crop plants? (a) X-rays (b) UV (260 nm) (c) Gamma rays (from cobalt-60) (d) Alpha particles
Last Answer : (c) Gamma rays
Description : Cobalt - 60 is used as a source of __________ in medical therapy & industrial radiography. (A) X-rays (B) γ-rays (C) α-rays (D) β-rays
Last Answer : (B) γ-rays
Description : The principle behind a breeder reactor is: w) U-235 undergoes fission. x) U-238 is converted to Pu-239, which undergoes fission. y) Deuterium undergoes fission. z) Cobalt-60 undergoes fission.
Last Answer : ANSWER: X -- U-238 IS CONVERTED TO Pu-239, WHICH UNDERGOES FISSION.
Description : Can the decay half-life of a radioactive material be changed? -Physics
Last Answer : Yes, the decay half-life of a radioactive material can be changed. Radioactive decay happens when an unstable atomic nucleus spontaneously changes to a lower-energy state and spits out a bit of ... radiometric dating are so accurate because decay half-lives in nature are so close to constant.
Description : What is the half-life of a radioactive element ?
Last Answer : Half-life is the amount of time during which half of the nucleus of an element is irradiated.
Description : A frheshly prepared radioactive source of half life 2 hrs emits radiation of intensity which is 32 times the permissible safe value of intensity. Whic
Last Answer : A frheshly prepared radioactive source of half life 2 hrs emits radiation of intensity which is 32 times the ... B. 5hrs C. 10 hrs D. 32 hrs