Which one of the following noble gases is not found in the atmosphere? (1) Argon (2) Krypton (3) Radon (4) Xenon

1 Answer

Answer :

(3) Radon Explanation: All the noble gases are present in Earth's atmosphere and, except for helium and radon, their major commercial source is the air, from which they are obtained by liquefaction and fractional distillation.

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Last Answer : (3) radon Explanation: An early-20th-century form of quackery was the treatment of maladies in a radiotorium. It was a small, sealed room for patients to be exposed to radon for its " ... , which results in genetic and other cell damage, resulting in increased rates of illness, including cancer.

Description : The noble gas used in radiotherapy is (1) neon (2) argon (3) radon (4) xenon

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Description : The noble has used for the treatment of cancer is - (1) Helium (2) Argon (3) Krypton (4) Radon

Last Answer : (4) Radon Explanation: Radon was once commonly used to treat cancer. The radiation it gives off kills cancer cells. However, the element must be used with great care because radiation can kill ... Today, radon is not as widely used for the treatment of cancer. Radon is a radioactive element.

Description : The noble gas used for the treatment of cancer is (1) Helium (2) Argon (3) Krypton (4) Radon

Last Answer : Radon

Description : Which of the inert gases can form compounds? (1) Helium (2) Xenon (3) Krypton (4) Argon

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Description : Which of the inert gases can form compounds? (1) Helium (2) Xenon (3) Krypton (4) Argon

Last Answer : Xenon

Description : Which of the following inert gas atoms is the heaviest? w) xenon x) neon y) radon z) krypton

Last Answer : ANSWER: Y -- RADON

Description : Which one of the following statements is TRUE regarding the molar heat capacity for the noble gases? w) heat capacity decreases from Helium to Xenon x) heat capacity increases from helium to argon y) heat ... Helium to Argon, then decreases to Xenon z) heat capacity is the same for all noble gases 

Last Answer : ANSWER: Z -- HEAT CAPACITY IS THE SAME FOR ALL NOBLE GASES 

Description : An inert gas mixed with oxygen given to patients suffering from restricted breathing is – (1) Helium (2) Krypton (3) Radon (4) Argon

Last Answer : (1) Helium Explanation: Heliox is a breathing has composed of a mixture of helium (He) and oxygen (O2). Heliox has been used medically since the 1930s, and although the medical community adopted ... its range of medical uses has since expanded greatly, mostly because of the low density of the gas

Description : An inert gas mixed with oxygen given to patients suffering from restricted breathing is (1) Helium (2) Krypton (3) Radon (4) Argon

Last Answer : Helium

Description : The noble gas which occurs most abundantly in the atmosphere is (A) Helium (B) Neon (C) Krypton (D) Argon

Last Answer : (D) Argon

Description : The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is - (1) Xenon (2) Krypton (3) Argon (4) Helium

Last Answer : (4) Helium Explanation: Trimix is a breathing gas, consisting of oxygen, helium and nitrogen, and is often used in deep commercial diving. The helium is included as a substitute for some ... possible to create mixes suitable for different depths or purposes by adjusting the proportions of each gas.

Description : The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is (1) Xenon (2) Krypton (3) Argon (4) Helium

Last Answer : Helium

Description : Which gas is used in filling electric bulbs - (1) Neon (2) Argon (3) Krypton (4) Radon

Last Answer : (2) Argon Explanation: Argon is used to fill incandescent light bulbs to inhibit the evaporation of the tungsten filaments and increase bulb life.

Description : Which among the following is not a noble gas? (a) Argon (b) Radon (c) Neon (d) Bromine

Last Answer : Ans:(d)

Description : The most abundant element in the earth's atmosphere is – (1) Argon (2) Nitrogen (3) Oxygen (4) Krypton

Last Answer : (2) Nitrogen Explanation: The most abundant gas in the Earth's atmosphere is nitrogen. Nitrogen makes up 78 percent of the Earth's atmosphere, and it is a permanent gas, which means that its percentage ... atmosphere is made up of 21 percent oxygen, 0.9 percent argon and 0.1 percent trace gases.

Description : The most abundant element in the earth’s atmosphere is (1) Argon (2) Nitrogen (3) Oxygen (4) Krypton

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Description : The most abundant inert gas in the atmosphere is (1) Helium (2) Neon (3) Argon (4) Krypton

Last Answer : Argon

Description : How many of the following properties of noble gases would increase from Helium to Radon? Boiling point, First lonisation enthalpy, Atomic volume, Abun

Last Answer : How many of the following properties of noble gases would increase from Helium to Radon? ... Density at STP. Valence electrons, Critical temperature.

Description : Among noble gases, only xenon reacts with flourine to form stable xenon fluorides, because xenon

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Description : Amomng noble gases, only xenon can form more number of compounds. This is due to ti its

Last Answer : Amomng noble gases, only xenon can form more number of compounds. This is due to ti its A. High ... C. Small size D. less than zero electron affinity

Description : Give reasons i) H2O is a liquid but H2S a gas. ii) Ammonia has higher boiling point than phosphine ii) Krypton & xenon make compounds.

Last Answer : Ans: i) Hydrogen bond is found in H2O but not in H2S.  ii) Hydrogen bond is found in NH3 but not in PH3.  iii) Because they have low ionization energy.

Description : Why do noble gases such neon or argon have very low chemical reactivity?

Last Answer : They have very low chemical reactivity because they all have afull outer shell, i.e. they all have 8 electrons in their outershell. This makes them very stable and thus not very reactive.

Description : The inert gas which is substituted for nitrogen in the air used by deep sea divers for Breathing is: (1) Neon (2) Argon (3) Krypton (4) Helium

Last Answer : (4) Helium Explanation: Helium is used since it has very low (almost non-existent) narcotic properties. The nitrogen in air is highly narcotic at depth and adding helium allows one to dive without the effects of narcosis (where one's mind is impaired).

Description : The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing is – (1) Neon (2) Krypton (3) Argon (4) Helium

Last Answer : (4) Helium Explanation: Helium is used by deep sea divers because it reduces the narcosis of nitrogen and it remains below the oxygen toxicity limits. In fact, they use tri mix of Oxygen, helium and a little bit of nitrogen.

Description : Which among the following is used to dilute oxygen in the gas cylinders used by divers? (1) Krypton (2) Argon (3) Helium (4) Neon

Last Answer : (3) Helium Explanation: Helium is used to dilute the oxygen and nitrogen to reduce these affects. Helium is the gas of choice to use because it is an inert gas, is thinner, therefore more compressible than air, and its narcotic properties are negligible in comparison to nitrogen.

Description : Which among the following is used to dilute oxygen in the gas cylinders used by divers ? (1) Krypton (2) Argon (3) Helium (4) Neon

Last Answer : Helium

Description : The inert gas which is substituted for nitrogen in the air used by deep sea divers for Breathing is: (1) Neon (2) Argon (3) Krypton (4) Helium

Last Answer : Helium

Description : Radon differs from other naturally radioactive elements in which one of the following ways. Is it because radon w) is extremely radioactive x) decays into the element radium y) is a noble gas z) is as chemically active as fluorine

Last Answer : ANSWER: Y -- IS A NOBLE GAS

Description : Which is also called Stranger Gas? (1) Xenon (2) Neon (3) Argon (4) Nitrous oxide

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Description : Which element behaves chemically both as metal and nonmetal? (1) Argon (2) Boron (3) Xenon (4) Carbon

Last Answer : (2) Boron Explanation: Some elements behave chemically both as metals and nonmetals, and are called metalloids. Their examples include Boron, Silicon, Germanium and Antimony. Elements which are neither metals nor nonmetals are called Noble Gases.

Description : Which element behaves chemically both as metal and nonmetal ? (1) Argon (2) Boron (3) Xenon (4) Carbon

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Description : The coloured discharge tubes for advertisement mainly contain (1) Xenon (2) Argon (3) Helium (4) Neon

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Description : Which one of the following noble gases is not found in atmosphere ?

Last Answer : Which one of the following noble gases is not found in atmosphere ? A. (A) Rn B. (B) Kr C. Ne D. (D) Ar

Description : Dry air does NOT contain A. krypton B. argon C. neon D. none of the above

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Description : Stranger gas is (a) argon (b) neon (c) nitrous oxide (d) xenon

Last Answer : Ans:(d)

Description : Which one of the following is also called Stranger Gas? A. Neon B. Argon C. Xenon (Answer) D. Nitrous oxide

Last Answer : C. Xenon (Answer)

Description : Which of the following is not a noble gas? (1) Hydrogen (2) Helium (3) Neon (4) Argon

Last Answer : (1) Hydrogen Explanation: The noble gases are the chemical elements in group 18 of the periodic table. This chemical series contains helium, neon, argon, krypton, xenon, and radon.

Description : Which of the following is a noble gas - (1) Argon (2) Hydrogen (3) Oxygen (4) Nitrogen

Last Answer : (1) Argon Explanation: Noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table.

Description : Which of the following is not a noble gas ? (1) Hydrogen (2) Helium (3) Neon (4) Argon

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Description : In deep-sea diving, divers use a mixture of gases consisting of oxygen and – (1) hydrogen (2) nitrogen (3) argon (4) helium

Last Answer : (2) nitrogen Explanation: Air is not the "ideal" breathing mixture for diving as with a concentration of approximately 79 percent nitrogen, compressed air poses two potential problems for all divers: ... Nitrox, a gaseous mixture of nitrogen and oxygen. It is also known as 'Enriched Air.'

Description : A standardized base solution should be protected from which of the following gases? w) hydrogen x) carbon dioxide y) nitrogen z) argon

Last Answer : ANSWER: X -- CARBON DIOXIDE 

Description : In deep-sea diving, divers use a mixture of gases consisting of oxygen and (1) hydrogen (2) nitrogen (3) argon (4) helium

Last Answer : nitrogen

Description : Which one of the following noble gases is not found in atmoshphere?

Last Answer : Which one of the following noble gases is not found in atmoshphere? A. Rn B. Kr C. Ne D. Ar

Description : Where are the noble gases are found on the periodic table?

Last Answer : It is found in group 18 (the group on the extreme right)

Description : All noble gases are - (1) Colourless (2) Odourless (3) Colourless and Odourless (4) Light blue

Last Answer : (3) Colourless and Odourless Explanation: Other characteristics of the noble gases are that they all conduct electricity, fluoresce, are odorless and colorless, and are used in many conditions when a stable element is needed to maintain a safe and constant environment.

Description : Electron affinity of noble gases is - (1) zero (2) Low (3) High (4) Very high

Last Answer : (1) zero Explanation: Most elements 'want' to have a complete electron shell with 8 electrons. Since the Noble Gases already have that 'perfect status' then they have an affinity of 0.

Description : Explain why Electron gain enthalpy of noble gases is positive.

Last Answer : Ans. Noble gases have large positive electron gain enthalpies because the extra electron has to be placed in the next higher principal quantum energy level, thereby producing highly unstable electronic configuration.