Exams › NEET › Chemistry

Sulphur trioxide can be obtained by which of the following reaction:

1. CaSO4 + C → Δ
2. Fe2(SO4)3 → Δ
3. S + H2SO4 → Δ
4. H2SO4 + PCl5 → Δ

Correct answer: Fe2(SO4)3 → Δ

Solution

When ferric sulfate (Fe2(SO4)3) is heated, it decomposes to give sulfur trioxide (SO3) along with ferric oxide (Fe2O3). This is a common decomposition reaction.

Related NEET Chemistry questions

• What is the physical state of \( \boldsymbol{P} \boldsymbol{C l} \) late under normal condition?
• Which of the following statement(s) about the Modern periodic table is/are incorrect? (i) The elements in the Modern periodic table are arranged on the basis of their decreasing atomic number. (ii) The elements in the Modern periodic table are arranged on the basis of their increasing atomic number (iii) Isotopes are placed in an adjoining group(s) in the periodic table.
• Match the following: Oxide - Nature (A) CO - Basic (B) BaO - Neutral (C) Al2O3 - Acidic (D) Cl2O7 - Amphoteric Which of the following is incorrect option?
• Which of the following compounds has a 3-centre bond?
• Among boron trifluoride, stannic chloride and stannous chloride, Lewis acid is represented by:
• The basic structural unit of silicates is:

⚔️ Practice NEET Chemistry free + battle 1v1 →