MCQ
The $4\ R$ Principle is:
- ✓Reduce, Reuse, Recycle, Recover
- BRemember, reduce, Recycle, Rejoice
- CRepeat, Rejoice, recycle, reduce
- DNone of the above
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
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S. No.
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Column - I
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S. No.
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Column - II
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$(A)$
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Carbonization
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$(1)$
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Coke
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$(B)$
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Destructive distillation
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$(2)$
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Coal
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$(C)$
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Cracking
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$(3)$
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Petroleum
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$(D)$
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Refining
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$(4)$
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Hydrocarbons
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