Which gas does not form the part, of atmosphere? (1) Nitrogen (2) Helium (3) Chlorine (4) None of the above

Which gas does not form the part, of atmosphere? (1) Nitrogen (2) Helium (3) Chlorine (4) None of the above
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(3) Chlorine Explanation: The atmosphere of Earth is a layer of gases surrounding the planet Earth that is retained by Earth's gravity. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation, warming the surface through heat retention (greenhouse effect), and reducing temperature extremes between day and night (the diurnal temperature variations). Air is the name given to the atmosphere used in breathing and photosynthesis.
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Which gas does not form the part of atmosphere ? (1) Nitrogen (2) Helium (3) Chlorine (4) None of the above

Description : Which gas does not form the part of atmosphere ? (1) Nitrogen (2) Helium (3) Chlorine (4) None of the above

Last Answer : Chlorine

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

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

Last Answer : (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]).

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

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

Last Answer : Helium

Which two gases are used to disinfect water in sewage treatment facilities? w) helium and nitrogen x) ozone and chlorine y) oxygen and hydrogen z) nitrogen and chlorine

Description : Which two gases are used to disinfect water in sewage treatment facilities? w) helium and nitrogen x) ozone and chlorine y) oxygen and hydrogen z) nitrogen and chlorine 

Last Answer : ANSWER: X -- OZONE AND CHLORINE

Oxygen The gases which are used by divers as an artificial atmosphere are helium and _____. A. Oxygen B. Nitrogen C. Neon D. Carbon monoxide

Description : Oxygen The gases which are used by divers as an artificial atmosphere are helium and _____. A. Oxygen B. Nitrogen C. Neon D. Carbon monoxide

Last Answer : ANSWER: A

Helium The gases which are used by divers as an artificial atmosphere are helium and _____. A. Oxygen B. Nitrogen C. Neon D. Carbon monoxide

Description : Helium The gases which are used by divers as an artificial atmosphere are helium and _____. A. Oxygen B. Nitrogen C. Neon D. Carbon monoxide

Last Answer : ANSWER: A

The gases which are used by divers as an artificial atmosphere are helium and _____. A. Oxygen B. Nitrogen C. Neon D. Carbon monoxide

Description : The gases which are used by divers as an artificial atmosphere are helium and _____. A. Oxygen B. Nitrogen C. Neon D. Carbon monoxide

Last Answer : ANSWER: A

The gases which are used by divers as an artificial atmosphere are helium and _____. A. Oxygen B. Nitrogen C. Neon D. Carbon monoxide

Description : The gases which are used by divers as an artificial atmosphere are helium and _____. A. Oxygen B. Nitrogen C. Neon D. Carbon monoxide

Last Answer : ANSWER: A

Look at the following gases: 1. Carbon dioxide 2. Helium 3. Nitrogen 4. Oxygen The two most abundant gases in the atmosphere are: (a) 1 and 3 (b) 2 and 4 (c) 3 and 4 (d) 1 and 4

Description : Look at the following gases: 1. Carbon dioxide 2. Helium 3. Nitrogen 4. Oxygen The two most abundant gases in the atmosphere are: (a) 1 and 3 (b) 2 and 4 (c) 3 and 4 (d) 1 and 4

Last Answer : Ans:(c)

In the atmosphere ultraviolet rays are absorbed by – (1) Oxygen (2) Nitrogen (3) Ozone (4) Helium

Description : In the atmosphere ultraviolet rays are absorbed by – (1) Oxygen (2) Nitrogen (3) Ozone (4) Helium

Last Answer : (1) Oxygen Explanation: Most of the ultraviolet radiation in sunlight is absorbed by oxygen in Earth's atmosphere, which forms the ozone layer of the lower stratosphere. UV light is found ... and causes many substances to glow or fluoresce. Most ultraviolet is classified as non-ionizing radiation.

The gases which are used by drivers as an artificial atmosphere are helium and-------? A. Nitrogen B. Oxygen (Answer) C. Neon D. Carbon monoxide

Description : The gases which are used by drivers as an artificial atmosphere are helium and-------? A. Nitrogen B. Oxygen (Answer) C. Neon D. Carbon monoxide

Last Answer : B. Oxygen (Answer)

In the atmosphere ultraviolet rays are absorbed by (1) Oxygen (2) Nitrogen (3) Ozone (4) Helium

Description : In the atmosphere ultraviolet rays are absorbed by (1) Oxygen (2) Nitrogen (3) Ozone (4) Helium

Last Answer : Oxygen

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

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

Last Answer : Argon

Coal burning power plants and factories are responsible for about 86% of - (a) carbon monoxide in the atmosphere (b) sulphur dioxide in the atmosphere (c) chlorine in the atmosphere (d) nitrogen dioxide in the atmosphere

Description : Coal burning power plants and factories are responsible for about 86% of - (a) carbon monoxide in the atmosphere (b) sulphur dioxide in the atmosphere (c) chlorine in the atmosphere (d) nitrogen dioxide in the atmosphere

Last Answer : Ans:(b)

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

Last Answer : (3) Carbon dioxide Explanation: Gases which absorb outgoing terrestrial rediation are called greenhouse gases, such as water vapour, methane, chlorofluorocarbons, and carbon dioxide.

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

Last Answer : (2) Sulphur dioxide Explanation: Sulfur dioxide (SO2) and nitrogen oxides (NOx) are the principal pollutants that cause acid rain. SO2 and NOx emissions released to the air react with water vapor ... Earth. Power plants burning coal and heavy oil produce over two-thirds of the annual SO2 emission.

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.

Name the gas which is used in balloons in the place of hydrogen? (1) nitrogen (2) helium (3) neorn (4) argon

Description : Name the gas which is used in balloons in the place of hydrogen? (1) nitrogen (2) helium (3) neorn (4) argon

Last Answer : (2) helium Explanation: Helium is used in balloons in the place of hydrogen. This is because hydrogen is a combustible gas and when burst can cause skin burns.

Carbon monoxide is an inflammable gas. Which one of the following is also inflammable? (1) Helium (2) Nitrogen (3) Oxygen (4) Hydrogen

Description : Carbon monoxide is an inflammable gas. Which one of the following is also inflammable? (1) Helium (2) Nitrogen (3) Oxygen (4) Hydrogen

Last Answer : (4) Hydrogen Explanation: At standard temperature and pressure, hydrogen is a colourless, odorless, tasteless, non-toxic, nonmetallic, highly combustible diatomic has with the molecular ... important role in acid-base chemistry with many reactions exchanging protons between soluble molecules.

The gas which turns into liquid at the lowest temperature among the following is – (1) hydrogen (2) oxygen (3) helium (4) nitrogen

Description : The gas which turns into liquid at the lowest temperature among the following is – (1) hydrogen (2) oxygen (3) helium (4) nitrogen

Last Answer : (1) hydrogen Explanation: Liquid hydrogen (LH2) is the liquid state, of the element hydrogen. Hydrogen is found naturally in the molecular H2 form. To exist as a liquid, H2 must ... method of obtaining liquid hydrogen involves a compressor resembling a jet engine in both appearance and principle.

The gas used for filling weather balloons is – (1) helium (2) hydrogen (3) air (4) nitrogen

Description : The gas used for filling weather balloons is – (1) helium (2) hydrogen (3) air (4) nitrogen

Last Answer : (1) helium Explanation: A balloon is an inflatable flexible bag filled with a gas, such as helium, hydrogen, nitrous oxide, oxygen, or air. Modern balloons can be made from ... others are used for practical purposes such as meteorology, medical treatment, military defense, or transportation.

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

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

Last Answer : Carbon dioxide

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 : Helium

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 : Helium

Carbon monoxide is an inflammable gas. Which one of the following is also inflammable? (1) Helium (2) Nitrogen (3) Oxygen (4) Hydrogen

Description : Carbon monoxide is an inflammable gas. Which one of the following is also inflammable? (1) Helium (2) Nitrogen (3) Oxygen (4) Hydrogen

Last Answer : Hydrogen

The gas which turns into liquid at the lowest temperature among the following is (1) hydrogen (2) oxygen (3) helium (4) nitrogen

Description : The gas which turns into liquid at the lowest temperature among the following is (1) hydrogen (2) oxygen (3) helium (4) nitrogen

Last Answer : hydrogen

The gas used for filling weather balloons is (1) helium (2) hydrogen (3) air (4) nitrogen

Description : The gas used for filling weather balloons is (1) helium (2) hydrogen (3) air (4) nitrogen

Last Answer : helium

A 3.2 m diameter balloon is filled with Helium. The total weight of balloon, gas and pay load is 10 kg kg. In an isothermal atmosphere having conditions identical to N.T.P. the balloon will rise to a height of about a.6000 m b.1500 m c.3000 m d.2000 m e.1000 m

Description : A 3.2 m diameter balloon is filled with Helium. The total weight of balloon, gas and pay load is 10 kg kg. In an isothermal atmosphere having conditions identical to N.T.P. the balloon will rise to a height of about a.6000 m b.1500 m c.3000 m d.2000 m e.1000 m

Last Answer : a. 6000 m

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

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

Last Answer : (D) Argon

__________ gas is normally not used as a coolant in a nuclear reactor, because of its high neutron capture cross-section. (A) Nitrogen (B) Hydrogen (C) Helium (D) Carbon dioxide

Description : __________ gas is normally not used as a coolant in a nuclear reactor, because of its high neutron capture cross-section. (A) Nitrogen (B) Hydrogen (C) Helium (D) Carbon dioxide

Last Answer : (A) Nitrogen

Which gas was discovered on the sun about 151 years ago during total solar eclipse? A. Hydrogen B. Helium (Answer) C. Nitrogen D. Flourine

Description : Which gas was discovered on the sun about 151 years ago during total solar eclipse? A. Hydrogen B. Helium (Answer) C. Nitrogen D. Flourine

Last Answer : B. Helium (Answer)

In the manufacture of banaspati ghee the gas used is -----? A. Helium B. Hydrogen (Answer) C. Oxygen D. Nitrogen

Description : In the manufacture of banaspati ghee the gas used is -----? A. Helium B. Hydrogen (Answer) C. Oxygen D. Nitrogen

Last Answer : B. Hydrogen (Answer)

“Azotobacter” bacteria is known for biological fixation of which atmospheric gas? a. A Oxygen b. B Nitrogen c. C Carbon Dioxide d. D Helium

Description : “Azotobacter” bacteria is known for biological fixation of which atmospheric gas? a. A Oxygen b. B Nitrogen c. C Carbon Dioxide d. D Helium

Last Answer : b. B Nitrogen

“Azotobacter” bacteria is known for biological fixation of which atmospheric gas? a. A Oxygen b. B Nitrogen c. C Carbon Dioxide d. D Helium

Description : “Azotobacter” bacteria is known for biological fixation of which atmospheric gas? a. A Oxygen b. B Nitrogen c. C Carbon Dioxide d. D Helium

Last Answer : b. B Nitrogen

What kind of gas inflates in an airbag a) Hydrogen b) Oxygen c) Helium d) Nitrogen

Description : What kind of gas inflates in an airbag a) Hydrogen b) Oxygen c) Helium d) Nitrogen

Last Answer : d) Nitrogen

The gas which was identified in the Sun using spectroscopy before its discovery on earth, is a) oxygen b) hydrogen c) helium d) nitrogen

Description : The gas which was identified in the Sun using spectroscopy before its discovery on earth, is a) oxygen b) hydrogen c) helium d) nitrogen

Last Answer : c) helium

Second gas effect’ is exerted by the following gas when coadministered with halothane: A. Nitrous oxide B. Cyclopropane C. Nitrogen D. Helium

Description : Second gas effect’ is exerted by the following gas when coadministered with halothane: A. Nitrous oxide B. Cyclopropane C. Nitrogen D. Helium

Last Answer : A. Nitrous oxide

Which of the following is NEVER used as a coolant in nuclear reactors: w) liquid nitrogen x) liquid sodium y) water z) helium gas

Description : Which of the following is NEVER used as a coolant in nuclear reactors: w) liquid nitrogen x) liquid sodium y) water z) helium gas

Last Answer : ANSWER: W -- LIQUID NITROGEN

Which of the following is a Non Metal that remains Liquid at room temperature? A. Phosphorous B. Bromine (Answer) C. Chlorine D. Helium

Description : Which of the following is a Non Metal that remains Liquid at room temperature? A. Phosphorous B. Bromine (Answer) C. Chlorine D. Helium

Last Answer : B. Bromine (Answer)

1/125th part of nitrogen gas isolated from atmosphere did not combine with any other substance due to

Description : 1/125th part of nitrogen gas isolated from atmosphere did not combine with any other substance due to

Last Answer : 1/125th part of nitrogen gas isolated from atmosphere did not combine with any other substance due to A. ... noble gases D. The presence of `O_(2)`.

(4) less soluble in blood than nitrogen at high pressure Explanation: Deep-sea divers have their oxygen supply mixed with helium in order to avoid the toxic nature of oxygen under extreme pressures. The Helium atom is much smaller than the Nitrogen molecule, has a smaller electron cloud and is less polarizable. It, therefore is less soluble in blood than nitrogen and prevents the formation of nitrogen bubbles in blood which blocks blood flow as the diver comes to the surface of the sea from underwater.

Description : (4) less soluble in blood than nitrogen at high pressure Explanation: Deep-sea divers have their oxygen supply mixed with helium in order to avoid the toxic nature of oxygen under extreme pressures. The ... blood which blocks blood flow as the diver comes to the surface of the sea from underwater.

Last Answer : The chemical bahaviour of an atom depends upon - (1) the number of protons in its nucleus (2) the number of neutrons in the nucleus (3) the number of electrons orbiting around the nucleus (4) the number of nucleons in the nucleus

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

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.'