P-Block MCQ

Test your knowledge with important P-Block MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more P-Block MCQs at Bissoy

• Which among the following noble gases does not form clathrates?
  ক

  Argon

  খ

  Xenon

  গ

  Krypton

  ঘ

  Helium
• Which of the following noble gases can diffuse through rubber?
  ক

  Helium

  খ

  Xenon

  গ

  Argon

  ঘ

  Krypton
• Which of the following noble gases is most soluble in water?
  ক

  Helium

  খ

  Radon

  গ

  Krypton

  ঘ

  Neon
• What is the boiling point of Helium?
  ক

  7.8 K

  খ

  0 K

  গ

  4.2 K

  ঘ

  3.7 K
• What is the electron gain enthalpy for noble gases?
  ক

  > 0

  খ

  < 0

  গ

  = 0

  ঘ

  It is not defined for noble gases
• What is the ratio of the molar heat at constant pressure to the molar heat at constant volume for a noble gas?
  ক

  1.5

  খ

  1.67

  গ

  1.73

  ঘ

  1.37
• Which of the following statements is incorrect about noble gases?
  ক

  They are monoatomic

  খ

  They are colourless

  গ

  They are odourless

  ঘ

  They all have an outer electronic configuration of ns2np6
• Which of the following noble gases is not obtained via fractional distillation?
  ক

  Krypton

  খ

  Argon

  গ

  Neon

  ঘ

  Helium
• What are the decay products of radium?
  ক

  Radon and oxygen

  খ

  Radon and nitrogen

  গ

  Lanthanum and oxygen

  ঘ

  Radon and Helium
• What is the half-life of radon?
  ক

  10 days

  খ

  4.56 days

  গ

  3.82 days

  ঘ

  5.46 days
• Which of the following scientists first discovered helium in the solar spectrum during a total solar eclipse?
  ক

  Lord Rayleigh

  খ

  J N Lockyer

  গ

  William Ramsay

  ঘ

  Antoine Lavoisier
• The main commercial source of helium is natural gas.
  ক

  True

  খ

  False
• Which of the following is the second most abundant noble gas in the atmosphere?
  ক

  Helium

  খ

  Argon

  গ

  Neon

  ঘ

  Krypton
• Which of the following noble gases do not occur in the elemental state in the atmosphere?
  ক

  Helium

  খ

  Neon

  গ

  Argon

  ঘ

  Radon
• Helium is the second most abundant gas in the universe.
  ক

  True

  খ

  False
• Which of the following halogen exists as a solid at room temperature?
  ক

  Chlorine

  খ

  Fluorine

  গ

  Iodine

  ঘ

  Bromine
• Who discovered the element chlorine?
  ক

  Joseph Priestley

  খ

  Antoine Lavoisier

  গ

  Humphry Davy

  ঘ

  Wilhelm Scheele
• What is the atomicity of halogens?
  ক

  Monoatomic

  খ

  Diatomic

  গ

  Triatomic

  ঘ

  Octatomic
• What is the correct order of enthalpy of dissociation of halogens?
  ক

  F2 > Cl2 > Br2 > I2

  খ

  Cl2 > Br2 > F2 > I2

  গ

  Cl2 > F2 > Br2 > I2

  ঘ

  F2 > Br2 > Cl2 > I2
• What is the general electronic configuration of the halogens?
  ক

  ns2np5

  খ

  ns2np2

  গ

  ns2np3

  ঘ

  ns2np4
• Which of the following is not a mineral of fluorine?
  ক

  Fluorspar

  খ

  Cryolite

  গ

  Fluoroapatite

  ঘ

  Carnallite
• Halogens do not occur in the free state.
  ক

  True

  খ

  False
• Which of the following halogen is radioactive?
  ক

  Fluorine

  খ

  Bromine

  গ

  Astatine

  ঘ

  Chlorine
• Which of the following element is most reactive?
  ক

  Chlorine

  খ

  Fluorine

  গ

  Bromine

  ঘ

  Iodine
• Group 17 elements are also called halogens.
  ক

  True

  খ

  False
• Which of the following is not poisonous?
  ক

  H2O

  খ

  H2S

  গ

  H2Se

  ঘ

  H2Te
• What is the correct order of reactivity of group 16 elements?
  ক

  O > Se > S > Te > Po

  খ

  S > O > Te > Po > Se

  গ

  S > O > Se > Te > Po

  ঘ

  O > S > Se > Te > Po
• Which of the following is a photosensitive element?
  ক

  S

  খ

  Se

  গ

  O

  ঘ

  Po
• What is the most reactive element of group 16?
  ক

  Oxygen

  খ

  Sulphur

  গ

  Tellurium

  ঘ

  Selenium
• Which group 16 element has 8 allotropic forms?
  ক

  Sulphur

  খ

  Oxygen

  গ

  Selenium

  ঘ

  Polonium