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NON-MEATALS, C . Sulphur, Nitrogen, halogen, inert Gases

📆 October 22, 2024

Total Questions: 38

11. Which is used as Laughing gas? [U.P.P.C.S. (Mains) 2011 ,U.P.U.D.A./L.D.A. (Mains) 2010, 40th B.P.S.C. (Pre) 1995]

Correct Answer: (a) Nitrous oxide
Solution:Nitrous oxide (N₂O) is also known as laughing gas. It is a colorless gas with a slight metallic odor and taste. Its inhalation leads to disorientation, euphoria, numbness, loss of coordination, dizziness, and ultimately loss of consciousness. It is also used as an anesthetic gas. This gas is used in medical and dental procedures as a sedative. It helps to relieve anxiety before the procedure and allows the patient to relax.

12. Which of the following is known as laughing gas? [U.P. P.C.S. (Pre) 2023]

Correct Answer: (a) Nitrous oxide
Solution:

Nitrous oxide (N₂O) is also known as laughing gas. It is a colorless gas with a slight metallic odor and taste. Its inhalation leads to disorientation, euphoria, numbness, loss of coordination, dizziness, and ultimately loss of consciousness. It is also used as an anesthetic gas. This gas is used in medical and dental procedures as a sedative. It helps to relieve anxiety before the procedure and allows the patient to relax.

13. The 'laughing gas' is: [M.P.P.C.S. (Pre) 2017]

Correct Answer: (b) Nitrous oxide
Solution:Nitrous oxide (N₂O) is also known as laughing gas. It is a colorless gas with a slight metallic odor and taste. Its inhalation leads to disorientation, euphoria, numbness, loss of coordination, dizziness, and ultimately loss of consciousness. It is also used as an anesthetic gas. This gas is used in medical and dental procedures as a sedative. It helps to relieve anxiety before the procedure and allows the patient to relax.

14. Which of the following is also known as laughing gas? [65th B.P.S.C. (Pre) 2019]

Correct Answer: (b) Nitrous oxide
Solution:Nitrous oxide (N₂O) is also known as laughing gas. It is a colorless gas with a slight metallic odor and taste. Its inhalation leads to disorientation, euphoria, numbness, loss of coordination, dizziness, and ultimately loss of consciousness. It is also used as an anesthetic gas. This gas is used in medical and dental procedures as a sedative. It helps to relieve anxiety before the procedure and allows the patient to relax.

15. Laughing gas used as anesthesia by doctors is: [44th B.P.S.C. (Pre) 2000]

Correct Answer: (c) Nitrous oxide
Solution:Nitrous oxide (N₂O) is also known as laughing gas. It is a colorless gas with a slight metallic odor and taste. Its inhalation leads to disorientation, euphoria, numbness, loss of coordination, dizziness, and ultimately loss of consciousness. It is also used as an anesthetic gas. This gas is used in medical and dental procedures as a sedative. It helps to relieve anxiety before the procedure and allows the patient to relax.

16. Which one of the following is also called Stranger Gas? [I.A.S. (Pre) 2008]

Correct Answer: (c) Xenon
Solution:Xenon is a gaseous element with symbol Xe and atomic number 54. It is a rare, odourless, colourless, tasteless, chemically unreactive gas. Xenon gas is also known as stranger gas as its volume is very low in the atmosphere (about 0.08 parts per million). It was discovered in England by the Scottish chemist William Ramsay and British chemist Morris Travers in 1898.

17. Which one of the following is not correct? [U.P.P.C.S. (Mains) 2010]

Correct Answer: (d) Nitric oxide is laughing gas.
Solution:Nitric oxide (NO) is not a laughing gas. In fact, nitrous oxide (N₂O) is known as laughing gas. Rest of the options are correct.

18. Discharge of nitrogen causes: [U.P.P.C.S. (Mains) 2008]

Correct Answer: (c) The amount of nitrogen in the lithosphere and atmosphere remains unchanged
Solution:The nitrogen cycle is a process by which nitrogen is converted into its various chemical forms. This transformation can be carried out through both biological and physical processes. The nitrogen cycle includes fixation, ammonification, nitrification and denitrification. Denitrifying bacteria converts nitrate and nitrite ions into nitrogen. From discharge of this nitrogen, its amount in the lithosphere and in atmosphere remains unchanged.

19. Which one of the following is the permanent gas in the atmosphere? [U.P. P.C.S. (Mains) 2017]

Correct Answer: (c) Nitrogen
Solution:Permanent gases are those that are believed to be incapable of liquefaction and remain gaseous under normal conditions. Nitrogen is a permanent gas in the atmosphere and accounts for about 78%.

20. The gas used to inflate the tires of an aircraft is: [U.P.R.O./A.R.O. (Pre) 2014 ,Uttarakhand U.D.A./L.D.A. (Pre) 2007]

Correct Answer: (b) Nitrogen
Solution:Nitrogen gas is used in the tires of an aeroplane. This is because nitrogen gas does not support combustion and can assist in preventing wheel fires when the aircraft lands. The braking and high speed can produce dangerously high temperatures, unlike in oxygen. Nitrogen is preferred because it is the lowest cost gas that does not support combustion.
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