Which one of the following elements is an example of noble gas? (1) Nitrogen (2) Hydrogen (3) Chlorine (4) Helium

Which one of the following elements is an example of noble gas? (1) Nitrogen (2) Hydrogen (3) Chlorine (4) Helium
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(4) Helium Explanation: Noble gas refers to any of the seven chemical elements that make up Group Villa of the periodic table. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and element 118 (temporarily named ununoctium [Uuo]).
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Description : Which one of the following is a micro-element ? (1) Chlorine (2) Hydrogen (3) Nitrogen (4) Oxygen

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Of the nonmetallic elements the one least likely to be found in organic compounds is: w) nitrogen x) phosphorus y) chlorine z) selenium

Description : Of the nonmetallic elements the one least likely to be found in organic compounds is: w) nitrogen x) phosphorus y) chlorine z) selenium

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Which of the following elements does not normally occur as a diatomic molecule? w) hydrogen x) chlorine y) argon z) oxygen

Description : Which of the following elements does not normally occur as a diatomic molecule? w) hydrogen x) chlorine y) argon z) oxygen

Last Answer : ANSWER: Y -- ARGON

What is the first element in the periodic table? A. Hydrogen (Answer) B. Helium C. Nitrogen D. Carbon

Description : What is the first element in the periodic table? A. Hydrogen (Answer) B. Helium C. Nitrogen D. Carbon

Last Answer : A. Hydrogen (Answer)

Alpha particles are nuclei of: w) hydrogen x) helium y) oxygen z) nitrogen

Description : Alpha particles are nuclei of: w) hydrogen x) helium y) oxygen z) nitrogen

Last Answer : ANSWER: X -- HELIUM

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

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

Which one of the following is-a greenhouse gas? (1) Nitrogen (2) Helium (3) Carbon dioxide (4) Sulphur dioxide

Description : Which one of the following is-a greenhouse gas? (1) Nitrogen (2) Helium (3) Carbon dioxide (4) Sulphur dioxide

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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

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).

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

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.

The gas used to dilute oxygen for breathing by deep sea divers is- (1) Neon (2) Argon (3) Nitrogen (4) Helium

Description : The gas used to dilute oxygen for breathing by deep sea divers is- (1) Neon (2) Argon (3) Nitrogen (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).

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

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.

Which gas emitted by power stations causes acid rain? (1) Carbon dioxide (2) Sulphur dioxide (3) Helium (4) Nitrogen

Description : Which gas emitted by power stations causes acid rain? (1) Carbon dioxide (2) Sulphur dioxide (3) Helium (4) Nitrogen

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The chief constituent of natural gas is: (1) Methane (2) Helium (3) Nitrogen (4) Propalie

Description : The chief constituent of natural gas is: (1) Methane (2) Helium (3) Nitrogen (4) Propalie

Last Answer : (1) Methane Explanation: Natural gas is a naturally occurring hydrocarbon has mixture consisting primarily of methane (CH4). However, it also includes varying amounts of other higher alkanes (ethane, propane), and a small percentage of carbon dioxide, nitrogen, hydrogen sulfide, or helium.

Dry ice is the solid form of what gas? w) nitrogen x) oxygen y) helium z) carbon dioxide

Description : Dry ice is the solid form of what gas? w) nitrogen x) oxygen y) helium z) carbon dioxide

Last Answer : ANSWER: Z -- CARBON DIOXIDE

The chief constituent of natural gas is: (1) Methane (2) Helium (3) Nitrogen (4) Propane

Description : The chief constituent of natural gas is: (1) Methane (2) Helium (3) Nitrogen (4) Propane

Last Answer : Methane

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

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

Which gas emitted by power stations causes acid rain? (1) Carbon dioxide (2) Sulphur dioxide (3) Helium (4) Nitrogen

Description : Which gas emitted by power stations causes acid rain? (1) Carbon dioxide (2) Sulphur dioxide (3) Helium (4) Nitrogen

Last Answer : Sulphur dioxide