Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2018Chemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Which of the following statements is incorrect?

Options

  1. A-Black phosphorus is formed by heating red phosphorus.
  2. B-Black phosphorus does not burn in air upto 875 ~K .
  3. CWhite phosphorus readily catches fire in air to give dense fumes of P ₄ O ₁₀ .
  4. DRed phosphorus does not react with caustic alkalies.

Correct answer

B. -Black phosphorus does not burn in air upto 875 ~K .

Step-by-step solution

-Black phosphorus does not burn in air upto 673 ~K .

Practice p Block Elements (Group 15, 16, 17 & 18) on Quantrex Academy →

More from p Block Elements (Group 15, 16, 17 & 18)

Identify the incorrect statement from the following : 2026Given below are two statements: Statement-I : Heating NaCl with concentrated H₂ SO₄ and MnO₂ results in oxidation of Mn. Statement-II : Heating NaI with concentrated H₂ SO₄ and MnO 2026Given below are two statements: Statement I : Like nitrogen that can form ammonia, arsenic can form arsine. Statement II : Antimony cannot form antimony pentoxide. In the light of 2025Match List - I with List-II array llll & List-I & & List-II . & XeO ₃ & I. & sp ^3 ~d , linear . & XeF ₂ & II. & sp ^3 ; pyramidal . & XeOF ₄ & III. & sp ^3 ~d ^3 ; distorted octah 2025Among Group 16 elements, which one does NOT show -2 oxidation state? 2024Identify the incorrect statement. 2024The products A and B obtained in the following reactions, respectively, are aligned & 3 ROH + PCl ₃ 3 RCl + A & ROH + PCl ₅ RCl + HCl + B aligned 2024Given below are two statements: Statement I: The boiling point of hydrides of Group 16 elements follow the order H ₂ O H ₂ Te H ₂ Se H ₂ ~S . Statement II: On the basis of molecula 2024 Full p Block Elements (Group 15, 16, 17 & 18) list All NEET PYQs