An important product in the ozone depletion by chlorofluorocarbons is
1
Cl
2
OCl
3
OF
4
O F
Official Solution
Correct Option: (2)
Step 1: Understanding the Concept:
CFCs release chlorine atoms that catalyse ozone depletion.
Step 2: Detailed Explanation:
CFCs (e.g., CCl F ) in the stratosphere undergo photodissociation to release Cl atoms. Cl reacts with O to form ClO and O . ClO is an important intermediate. So OCl (ClO) is produced.
Step 3: Final Answer:
OCl
02
PYQ 2016
medium
chemistryID: met-2016
Match the Column I and Column II and pick the correct matching from the codes given below.
1
A-3, B-4, C-1, D-5, E-2
2
A-1, B-2, C-3, D-4, E-5
3
A-3, B-5, C-1, D-2, E-4
4
A-5, B-3, C-1, D-2, E-4
Official Solution
Correct Option: (1)
Step 1: Understanding the Concept:
This question tests knowledge of environmental chemistry and industrial applications of compounds. Step 2: Detailed Explanation: A. Peroxy acetyl nitrate (PAN): A major component of photochemical smog. B. Polycyclic aromatic hydrocarbons (PAHs): Known to be carcinogens. C. Dioxins: Produced during waste incineration. D. Indigo: A natural dye used in the process of vat dyeing. E. IR active molecules: Absorb infrared radiation, contributing to global warming. Step 3: Final Answer:
The correct matches are A-3, B-4, C-1, D-5, E-2, which corresponds to option (A).
