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Chemistry (Part-X)

📆 May 15, 2025

Total Questions: 50

41. Which of the following noble gas is used as anesthetic agent? [S.S.C. Online MTS (T-I) 2.08.2019 (Shift-II) ]

Correct Answer: (a) Xenon
Solution:Xenon (Xe) is a noble gas that has been used as an inhalation anesthetic. It has a low blood solubility, which allows for rapid onset and recovery, and it has fewer side effects compared to some other anesthetic agents.

(b) Argon, (c) Neon, and (d) Helium are noble gases but are not typically used as anesthetic agents due to their properties.

42. Which of the following is NOT a noble gas? [S.S.C. JE Mechanical Exam 22.03.2021 (Shift-I) ]

Correct Answer: (b) Boron
Solution:Noble gases are elements in Group 18 of the periodic table, known for their chemical inertness (unreactivity). The noble gases listed are:
  • Argon (Ar)
  • Neon (Ne)
  • Krypton (Kr)
  • Boron (B) is a metalloid element in Group 13, and it is not a noble gas.

43. Which of the following elements has the lowest melting point? [S.S.C. Online CHSL (T-I) 17.01.2017 (Shift-I) ]

Correct Answer: (d) Krypton
Solution:The melting point is the temperature at which it melts from its solid state to a liquid state. Following are the melting points of given elements-
Melting-point Name Chemical 
1772PlatinumPt
3500CarbonC
1495CobaltCo
-157KryptonKr

44. Which of the following elements has the lowest melting point? [S.S.C. Online CHSL (T-I) 23.01.2017 (Shift-II) ]

Correct Answer: (c) Argon
Solution:The melting point is the temperature at which it melts from its solid state to a liquid state. Following are the melting points of given elements-
Melting-point Name Chemical 
1660TitaniumTi
3410TungstenW
-189ArgonAr
1453NickelNi

45. Which of the following has the lowest melting point? [S.S.C. Online C.P.O.S.I. (T-I) 5.07.2017 (Shift-II) ]

Correct Answer: (c) Mercury
Solution:The melting point is the temperature at which it melts from its solid state to a liquid state. Following are the melting points of given elements-
Melting-point Name Chemical 
3500CarbonC
962SilverAg
-39MercuryHg
1064GoldAu

46. Which of the following elements has the lowest melting point? [S.S.C. Online CHSL (T-I) 30.01.2017 (Shift-I) ]

Correct Answer: (b) Nitrogen
Solution:The melting point is the temperature at which it melts from its solid state to a liquid state. Following are the melting points of given elements-
Melting-point Name Chemical 
1535IronFe
-210NitrogenN
114Iodine1
327LeadPb

47. Which of the following elements has the lowest melting point? [S.S.C. Online CHSL (T-I) 1.02.2017 (Shift-II) ]

Correct Answer: (b) Hydrogen
Solution:The melting point is the temperature at which it melts from its solid state to a liquid state. Following are the melting points of given elements-
Melting-point Name Chemical 
1857ChromiumCr
-259HydrogenH
420ZincZn
962SilverAg

48. Which of the following has the lowest melting point? [S.S.C. Online Graduate Level (T-I) 6.03.2020 (Shift-III) ]

Correct Answer: (c) Tin
Solution:The melting point is the temperature at which it melts from its solid state to a liquid state. Following are the melting points of given elements-
Melting-point Name Chemical 
327LeadPb
420ZincZn
232TinSn
962SilverAg

49. Which of the following elements has the lowest melting point? [S.S.C. Online CHSL (T-I) 27.01.2017 (Shift-III) ]

Correct Answer: (d) Krypton
Solution:The melting point is the temperature at which it melts from its solid state to a liquid state. Following are the melting points of given elements-
Melting-point Name Chemical 
1772PlatinumPt
98SodiumNa
630AntimonySb
-157KryptonKr

50. Which of the following elements has the lowest melting point? [S.S.C. Online CHSL (T-I) 20.01.2017 (Shift-II) ]

Correct Answer: (d) Mercury
Solution:The melting point is the temperature at which it melts from its solid state to a liquid state. Following are the melting points of given elements-
Melting-point Name Chemical 
114IodineI
327LeadPb
232TinSn
-39MercuryHg
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