Final Answer:
1. a) Compressed Natural Gas
b) Chlorofluorocarbon
c) Liquefied Petroleum Gas
d) Renewable Resource Report *(Note: RRR is not a standard acronym for a common gas or term in pollution contexts; however, based on typical school-level expectations and possible typo/ambiguity, “Renewable Resource Report” is unlikely. More plausibly, in some curricula, RRR may refer to “Reduce, Reuse, Recycle” — but that’s not a gas. Since the question asks for *full form* of abbreviations related to air/water pollution, and CNG, CFC, LPG are standard, RRR is likely a mistake. However, given common textbook usage in certain regions (e.g., Indian NCERT-aligned worksheets), RRR sometimes stands for
“Recycle, Reuse, Reduce” — though it's not a gas. But part 1 says “write full form”, not necessarily gases. So safest accepted answer for RRR in this context is:
Reduce, Reuse, Recycle.)*
→ Let’s confirm with standard educational usage: In environmental studies at school level, RRR =
Reduce, Reuse, Recycle.
2. i) b) Oxygen
ii) d) Volcanic eruptions
iii) c) clean, odourless and pure
iv) 4) All of the above
3. 1) Methane
2) Carbon dioxide
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Parent Tip: Review the logic above to help your child master the concept of air pollution worksheet.
