A comprehensive platform for Teachers to create standard question papers and Students to practice Case-Based, Assertion-Reason, and Critical Thinking questions.
Create professional PDF/Word papers with logo, instructions, and mixed question types in minutes.
Explore our repository by Class and Topic. Filter by "Knowledge" or "Competency" levels.
For Students. Take timed MCQ tests to check your understanding. Get instant feedback.
According to NEP 2020, rote learning is out. The focus has shifted to assessing a student's ability to apply concepts in real-life situations.
Questions derived from real-world passages to test analytical skills.
Testing the logic behind concepts, not just the definition.
Open-ended scenarios that require thinking beyond the textbook.
We provide complete AI-Powered Explanations for every question.
In NEET chemistry, reaction sequences involving P and Q often refer to the transformation of carbonyl compounds or their derivatives. Specifically, the reaction of a Grignard reagent or the reduction of carbonyls is a common theme.
Option D refers to the reaction of chloroform ($CHCl_3$). When chloroform is exposed to air and light, it undergoes oxidation to form phosgene ($COCl_2$), which is a highly poisonous gas. The reaction is: $$2CHCl_3 + O_2 \xrightarrow{light} 2COCl_2 + 2HCl$$ This is a standard textbook reaction in the Haloalkanes and Haloarenes chapter.
Since the question asks for the correct option regarding a reaction sequence, and Option D describes a chemically accurate and well-known transformation (the formation of phosgene from chloroform), it represents the most scientifically sound statement among the choices provided.
Final Answer: D