Which of the following are true about Pyrolysis ? (A) It produces less air…

2024

Which of the following are true about Pyrolysis ?

(A) It produces less air pollution than complete incineration.

(B) It is done in the presence of oxygen.

(C) Instead of oxidation a complex series of decomposition and other chemical reactions take place.

(D) Pyrolysis many times generates useful materials.

(E) Pyrolysis is a high temperature thermal process, an alternative to incineration.

Choose the correct answer from the options given below :

  1. A.

    (A), (B), (C) and (D) Only

  2. B.

    (A), (C), (D) and (E) Only

  3. C.

    (B), (C), (D) and (E) Only

  4. D.

    (A), (B) and (E) Only

Attempted by 7 students.

Show answer & explanation

Correct answer: B

Pyrolysis is defined as the thermal decomposition of materials at elevated temperatures in an inert atmosphere, meaning it occurs in the absence of oxygen.

Statement (B) is false because oxygen is not present. Statements (A), (C), (D), and (E) are true as pyrolysis produces less pollution than incineration, involves complex decomposition reactions rather than oxidation, generates useful materials like bio-oil or char, and serves as a high-temperature alternative process.

The correct answer is the combination that includes statements A, C, D, and E while excluding statement B.

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